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Updated: 2 hours 43 min ago

Electromagnetics, the W8JK Antenna, and the ‘Wow!’ Signal

Sun, 12/16/2018 - 8:03am

Electromagnetics, the W8JK Antenna, and the “Wow!” Signal 
Or, “My friend, the Ohio State Professor, Dr John Kraus, W8JK” 
Bob Houf
K7ZB

Antenna enthusiasts will recognize the call sign W8JK as the inventor of the classic array known as the W8JK flat-top beam. The antenna has unique characteristics that make it popular today and the interested ham can search the internet to find an almost overwhelming number of references for this design.

If you’re truly an old timer, you would know it as the ‘8JK flat-top beam antenna, originally described in the March and June (1937) issues of Radio Magazine and further discussed by Kraus in his QST article in the June, 1982 issue.

After spending 6 years in the Submarine Service of the US Navy I returned to school in pursuit of my Electrical Engineering degree at The Ohio State University. I had been an amateur radio operator as a 13-year-old teenager in 1963 and now it was the mid-1970’s and I was finally achieving my goal of obtaining my BSEE.

The first years went by at Ohio State and I began taking the core EE courses which included two semesters of Electromagnetics – starting with static charges, progressing through Maxwell’s Equations and on to antenna theory.

I was privileged to have as my instructor Dr John Kraus, W8JK , a distinguished Professor of Electrical Engineering and Director of the OSU Radio Observatory known as “Big Ear”. Dr Kraus had authored several text books on Electromagnetics and Antennas and his books were translated (sometimes illegally, as was done in the Soviet Union) in languages for use all over the world….READ FULL ARTICLE

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The post Electromagnetics, the W8JK Antenna, and the ‘Wow!’ Signal appeared first on QRZ Now - Amateur Radio News.

Works with Flex Radio

Sat, 12/15/2018 - 3:57pm

Applications that work seamlessly with your Flex Radio. Any comments can be sent to the Flex Community 

FlexRadio Mestro

Flexradio Power Amp. 1.5KW  

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Ho! Ho! Ho! Santa’s on Ham Radio

Sat, 12/15/2018 - 12:31pm

Share the magic of Ham Radio and Santa Claus with your children, grandchildren, and neighborhood kids.

The Santa Net is held every evening between Thanksgiving and Christmas on 3.916 MHz at 7:30PM Central Time.

See More: https://cqsanta.com/

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Sat, 12/15/2018 - 7:29am
Baofeng DM-1801

Baofeng DM-860 Dual Band Dual Time DMR slot digital / analog two way radio 136-174 / 400-470 MHz 1024 Channels Ham Walkie Talkie.1. Baofeng DM-860 is a Dual-Band, Two-Hour Slot, Level I and Level II Compatible DMR Radio provides crystal clear sound quality with DMR technology.2. Larger Capacity Lithium Ion Battery Equipped with a 2200 mAh lithium-ion battery. Up to 18 hours of work and 48 hours of work in standby mode. It lasts 30% longer than other DMR radios. The DM-860 is lightweight and comfortable, perfect for long QSOs.3. 

Baofeng DM-1801

More channel names of keyboard operations ,TX & RX frequencies, channel number, tones, etc. can be programmed via the keyboard. Users can also customize the top and side buttons for their favorite features.4. Talking rowThe talking range of Baofeng DM-860 can be up to 5 km (3 miles) under the visible range. There are other factors that influence the speaking range of a two-way radio. For example, weather, exact frequency of use, obstacles, etc.

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How to configure WSJT-X without LOTW Error?

Sat, 12/15/2018 - 7:01am

3.1. Windows

Download and execute the package file wsjtx-2.0.0-win32.exe, following these instructions:

  • Install WSJT-X into its own directory, for example C:\WSJTX or ` C:\WSJT\WSJTX`, rather than the conventional location C:\Program Files (x86)\WSJTX.
  • All program files relating to WSJT-X will be stored in the chosen installation directory and its subdirectories.
  • Logs and other writeable files will normally be found in the directory

C:\Users\<username>\AppData\Local\WSJT-X.

Your computer may be configured so that this directory is “invisible”. It’s there, however, and accessible. An alternative (shortcut) directory name is "%LocalAppData%\WSJT-X\".

  • The built-in Windows facility for time synchronization is usually not adequate. We recommend the program Meinberg NTP (see Network Time Protocol Setup for downloading and installation instructions) or Dimension 4 from Thinking Man Software. Recent versions of Windows 10 are now shipped with a more capable Internet time synchronization service that is suitable if configured appropriately.

  • From this version onward WSJT-X requires the OpenSSLlibraries to be installed. Suitable libraries may already be installed on your system, if they are not you will see this error shortly after startup. To fix this you need to install the OpenSSL libraries.
    • You can download a suitable OpenSSL package for fromWindows OpenSSL Packages, you need the latest Win32 v1.0.2 Lite version (Note it is the Win32 package even if you are using a 64-bit Windows operating system) which at the time of writing was Win32 OpenSSL Lite Package.
    • Install the package and accept the default options, including the option to copy the OpenSSL DLLs to the Windows system directory (this is important).

If you still get the same network error after installing the OpenSSL libraries then you also need to install the Microsoft VC++ 2013 Redistributable component. From the download page select vcredist_x86.exe and run it to install.

If you cannot install the OpenSSL libraries or do not have an Internet connection on the computer used to run WSJT-X 2.0, you can download the LoTW file manually. Go tohttps://lotw.arrl.org/lotw-user-activity.csv in a web browser, download the file, then move it to the WSJT-X log files directory. This directory can be opened by selectingFile | Open log directory.

  • WSJT-X expects your sound card to do its raw sampling at 48000 Hz. To ensure that this will be so when running under recent versions of Windows, open the system’s Sound control panel and select in turn the Recording and Playback tabs. Click on Properties, then Advanced, and select 16 bit, 48000 Hz (DVD Quality). Switch of all audio enhancement features for these devices.
  • You can uninstall WSJT-X by clicking its Uninstall link in the Windows Start menu, or by using Uninstall a Program on the Windows Control Panel Programs and Features option or in Settings Apps on Windows 10.

Source:WSJT-X 2.0 User Guide

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Fixing a brand new Cushcraft A3S beam antenna

Sat, 12/15/2018 - 6:08am

Cushcraft A3S  Three Element Beam – 10, 15 & 20 Meters

A3 World Ranger, our top selling tribander, has become the A3S with all stainless steel hardware. It’s a real power-house in a small space and lets you work the pile-ups with confidence. All you need is a lightweight tower and rotator to enjoy the benefits of the A3S. It’s a proven performer in DX-peditions and contests. Handles full power from your amp.Construction features include pinned boom sections, heavy duty element clamps with backing plates plus all stainless steel hardware. When space is a premium, but you want benefits of a full-size tribander, A3S is right for you! 

Add 30-40 meters with A-743 kit.

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IEEE Microwave Society Recognizes Radio Amateurs

Fri, 12/14/2018 - 4:06pm

The IEEE Microwave Theory and Techniques Society (MTT-S) has announced its 2019 award recipients. The list includes several radio amateurs.

  • James C. Rautio, AJ3K, will receive the Microwave Career Award for a career of leadership, meritorious achievement, creativity, and outstanding contributions in the field of microwave theory and techniques.
  • Wayne Shiroma, NH7PA, will receive the Distinguished Service Award, in recognition of a distinguished record of service to the MTT-S and the microwave profession.
  • Amir Mortazawi, AC8YB, will receive the Distinguished Educator Award, for outstanding achievements as an educator, mentor, and role model of microwave engineers and engineering students.
  • Frederick “Fritz” Raab, W1FR, will receive the Pioneer Award in recognition of pioneering contributions to the theory, development, and practical use of high-efficiency power amplifiers. Raab was coordinator of the ARRL 500 kHz experiment (WD2XSH), which was instrumental in securing the new 630-meter band.

In addition, Rick Campbell, KK7B, was elected an IEEE fellow in 2019 for his work in extending wafer probing into the millimeter-wave range. He is well known for his publications, including Experimental Methods in RF Design (with co-authors Wes Hayward, W7ZOI, and Bob Larkin, W7PUA) and his contributions to ARRL publications, including QST. Awards will be presented during the International Microwave Symposium (IMS), June 2 – 7, 2019, in Boston. 

Source:ARRL

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The post IEEE Microwave Society Recognizes Radio Amateurs appeared first on QRZ Now - Amateur Radio News.

Unboxing the New MFJ-2104 MFJ-2104 – Octopus Antenna

Fri, 12/14/2018 - 7:50am

MFJ sent me their MFJ-2104 Octopus Antenna, a four-band dipole with screw-in elements for 75m (the voice portion of 80m), 40m, 20m, and 10m. This is built on a project in Dec 2007 QST by N1GY. The device uses any pairs of hamsticks on any band from 75 to 2m/440cm to create the four bands. It fits on a 1-inch mast. I’ll put it up and test it in a future video.

Octopus antenna hub turns your ham-sticks into four fully balanced dipoles in minutes!

Mix and match any four HF/VHF/UHF bands.

Example: screw in 80,40,20 meter hamsticks and a dual band 2M/440 MHz whip (two on each band) on opposite sides. Now you have an automatic bandswitching 5-band dipole! Rotate it for maximum signal and minimum QRM and noise with a small rotator like Hy-gain AR-500, $129.95.

Works at any height, low for local NVIS and high for DX. At a fixed height, (say 20-30 feet) use 80-Meters for NVIS and 20-Meters for low-angle DX.

Mounts on any mast up to 1-inch in diameter. Use a fiberglass pole on a tripod and you are on the air! Check out our MFJ-1919EX a perfect mount for the new Octopus Antenna.
Perfect fro casual portable operation, limited space, HOAs, field day, camping, and ARES during disasters.
Single coas feed, built-in balun.

Interaction between bands is minimized because the ends are spaced apart at a large angle.

You don`t need an antenna tuner if you carefully tune each dipole. An easier way is to just set each dipole approximately on frequency and use an antenna tuner to operate and widen the bandwidth. 

Hamsticks break down to four feet for easy storage.

Tough Octopus Hub
Eight 3/8-24 threaded connectors for hamsticks. Super stong fiberglass filled ABS base insulator. Your Octopus Hub will give you years of trouble-free service!
Based on Geoff Haines, N1GY, award-winning December 2007 QST article.

Super Octopus Deals
MFJ-2104, $249.95. Octopus hub with your choice of four (2 each) 250W Hamsticks. Saves $20! When submitting your order choose 4 of the hamsticks listed at the bottom of this page and write them in the notes before submitting your order.

MFJ-16XXT Hamsticks handle 250 Watts PEP. About 7 feet fully extended, 4 feet collapsed.

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VHF Chance to win a brand new Boxchip S700A ! September 19, 2018 No comments

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IC-9700 new release!

Fri, 12/14/2018 - 6:18am

“We announced the release information of IC-9700 today.

IC-9700 is the RF DIRECT SAMPLING METHOD (144/430 Mhz Belt) with high rating in HF Transceiver IC-7610 / IC-7300, a real-time spectrum scope that can be grasp at a glance at the situation within the band, For the first time as a VHF / UHF Amateur Radio Machine, a waterfall display that can be confirmed in the time series. The 1200 Mhz Belt is also standard equipped.

Please visit the link below for the release date or the desired retail price and details.

For more information, please check:
http://www.icom.co.jp/release/20181214/

◎Icom Inc. Releases IC-9700, Supreme VHF/UHF Base Station Amateur Transceiver, including the 1200 MHz Band 

Icom Inc. will begin selling the IC-9700, 144, 430, 1200 MHz all mode transceiver in January 2019 in Japan. Delivery times may vary, depending on the country or region.

Icom Inc. (Headquarters: Hirano, Osaka, Japan/President: Masataka Harima) will begin selling the IC-9700, 144, 430, 1200 MHz all mode transceiver in January 2019 in Japan. Delivery times may vary, depending on the country or region. 

The IC-9700 is the first VHF/UHF transceiver introducing the RF direct sampling system for the 144 and 430 MHz bands, a real-time spectrum scope and waterfall function. The RF direct sampling system has achieved a high evaluation in Icom’s IC-7610 and IC-7300 HF transceivers, and the spectrum scope and water fall function have been indispensable tools to increase QSO opportunities, without missing weak signals. The radio has various features, such as a built-in 1200 MHz band, 4.3 inch TFT color touch screen display, full duplex with Dualwatch on separate bands, Satellite mode, D-STAR DV (Digital Voice) /DD (Digital Data) modes and Terminal/Access point modes. In addition, a newly designed power amplifier and cooling system provides stable and high-efficiency operation, even when continuously transmitting for a long time.

The IC-9700 is the perfect side-by-side companion to the IC-7300 HF radio. They are the same size and have almost identical ergonomics. Using the IC-9700 and IC-7300 creates an ideal, compact radio station covering the HF, 144, 430 and 1200 MHz bands. The IC-9700 is the one and only VHF/UHF all mode transceiver that enables a variety of VHF/UHF operation, like DX, contests, satellite/EME and D-STAR.

MAIN FEATURES

  • RF direct sampling system (144 and 430 MHz bands)
  • Triband (144, 430 and built in 1200 MHz bands) and all modes, including AM and DV/DD
  • High-speed real-time spectrum scope and waterfall function
  • Large 4.3 inch TFT color touch screen display
  • Full duplex with Dualwatch on separate bands
  • Satellite operation friendly functions
  • D-STAR DV (Digital Voice) and DD (Digital Data) modes
  • Receives and demodulates two signals simultaneously in the D-STAR DV mode
  • Built-in gateway function application for Terminal/Access point modes
  • Newly designed power amplifier providing stable and high-efficiency operation

Item name 144 MHz + 430 MHz + 1200 MHz <SSB / CW / RTTY / AM / FM / DV / DD> 
50 W transceiver (for amateur radio) Model name IC-9700 Suggested retail price 188,000 yen + tax Release date Scheduled to be released in January 2019 Estimated number of units to sell 5,000 vehicles / year (domestic and overseas)

Icom Co., Ltd. (Headquarters: Osaka-shi Hirano Ward, president: Masataka Harima) will release the 144/430/1200 MHz all mode transceiver IC-9700 for amateur radio in January 2019.

The IC-9700 is an RF direct sampling method (144/430 MHz band) which has been highly evaluated by HF transceiver IC-7610 / IC-7300, real-time spectrum scope which can grasp the situation in the band at a glance, We adopted the waterfall indication that can be confirmed by the series for the first time as a VHF / UHF amateur radio. In addition, 1200 MHz band is standard equipment.

4.3 inch large TFT display corresponding to touch operation, simultaneous reception of two waves in different band / different modes, full duplex, dedicated satellite mode, DV (digital voice) / DD (digital data) mode of D – STAR ® , recent topic Terminal mode / access point mode etc, various functions are implemented. In addition, the newly designed power amplifier and cooling structure allow stable operation even when used for a long time.

Since the operation system and user interface inherit the equivalent of the IC – 7300, by aligning IC – 9700 and IC – 7300, it is possible to operate from HF to the 1200 MHz band in lineup. IC-9700 with innovative spec and sophisticated operability unique to V / UHF dedicated machine. DX, contest, satellite / EME communication, 1200MHz band, D-STAR ® , such as the world of V / UHF, broadly, is the industry’s one and only all mode transceiver commitment pulled to the VHF / UHF, which can be enjoyed deeply.

【Main features】

  • Adopted RF direct sampling method aged by HF machine (144/430 MHz band).
  • In addition to the 144/430 MHz band, 1200 MHz band is standard equipment as standard. It corresponds to all mode including AM, DV / DD.
  • V / UHF machine first, high-speed real-time spectrum scope & waterfall display realized.
  • Equipped with a 4.3-inch large TFT display compatible with touch operation.
  • Supports 2 wave simultaneous reception (different band / different mode), full duplex operation.
  • Satellite mode with easy operation is installed.
  • It corresponds to D-STAR ® DV (digital voice) and DD (digital data) mode.
  • It corresponds to simultaneous reception of two waves in DV mode.
  • Built-in gateway function equivalent to RS-MS 3 A / RS-MS 3 W Operation is unnecessary with no application required.
  • Newly designed power amplifier that realizes high efficiency, stable output, energy saving.

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The post IC-9700 new release! appeared first on QRZ Now - Amateur Radio News.

First FT8 Roundup is a Huge Hit

Thu, 12/13/2018 - 4:21pm

The first FT8 Roundup over the December 1 – 2 weekend attracted some 1,300 logs from those taking advantage of the ever-more-popular digital protocol. This, despite its having been announced on fairly short notice and with other contests such as the ARRL 160-Meter Contest under way on the same weekend. More than 400 logs were from US radio amateurs in the 48 contiguous states, plus the District of Columbia. Overall, some 131,200 contacts were recorded. Participants from 91 countries submitted logs, testifying to the fact that FT8 is not just an US phenomenon. 

“The FT8 Roundup was the last shakedown for the WSJT-X 2.0-rc5 beta software,” said well-known RTTY contesting enthusiast and expert Don Hill, AA5AU, an FT8 Roundup cosponsor with Ed Muns, W0YK. “It performed with no major complications.” The general availability release of WSJT-X 2.0 is now out, and it’s not backward compatible with WSJT-X 1.9 or earlier versions. Developer Joe Taylor, K1JT, has urged users to upgrade by January 1 to what now is new world standard.

Muns, who’s NCJ “Digital Contesting” contributing editor, said FT8 Roundup participation compared favorably with that for the ARRL RTTY Roundup, which has averaged around 1,700 logs in recent years.

“Don and I expected the contest to be popular,” Muns said, “but the participation far exceeded our expectations. I think it bodes well for future FT8 contesting. Don and I are pretty bullish about continuing the FT8 Roundup on the first full weekend of December each year.” Nonetheless, Muns said he doesn’t believe FT8 will “really take off” and displace RTTY until the contact rate can be significantly increased through parallel QSO techniques. 

Hill agreed on the event’s popularity. “I have to say it was a huge success,” he said. “Ed and I never dreamed it would be this popular. It didn’t make sense to continue the Ten-Meter RTTY Contest during this part of the sunspot cycle. Replacing it with an all-FT8 HF contest was the logical choice.” Hill and Muns also co-sponsor the Ten-Meter RTTY Contest.

Hill told ARRL that final results of the inaugural FT8 Roundup should be out in a few days. “After the New Year, we hope to have downloadable online certificates available to all participants. We will definitely do it again next year,” he said.

The 2019 ARRL RTTY Roundup will permit the use of FT8.

Source:ARRL

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Broadcasters Intruding on Exclusive Amateur Radio Frequencies

Thu, 12/13/2018 - 3:51pm

The International Amateur Radio Union Region 1 (IARU-R1) Monitoring System (IARUMS) reports that Radio Hargeisa in Somaliland has returned to 7,120 kHz after a break of several weeks, while Radio Eritrea has been reported on 7,140 and 7,180 kHz. Radio Sudan has been transmitting on 7,205 kHz with excessive splatter, IARUMS said. German telecommunications authorities have filed official complaints.

IARUMS has also reported digital signals attributed to the Israeli Navy on 7,107 and 7,150 kHz. In addition, a Russian military F1B signal was observed in mid-November on 7,179 kHz. A Russian over-the-horizon radar has returned to 20 meters on 14,335 – 14,348 kHz. It was monitored on November 22. Earlier this fall, IARUMS reported digital signals from the Polish military daily on 7,001.8 kHz where Amateur Radio has a worldwide primary allocation. Telecommunications officials in Germany filed a complaint.

IARUMS has received reports of short “beeps” exactly 1 second apart, as well as frequency hopping between 10,108 and 10,115 kHz and 18,834 and 18,899 kHz. The signals are believed to emanate from a site near Chicago associated with an FCC-licensed Experimental operation involved with low-latency exchange trading on HF (see “Experiments Look to Leverage Low-Latency HF to Shave Microseconds off Trade Times”). Although Amateur Radio is secondary on 30 and 17 meters, Experimental licenses may not interfere with Amateur Radio operations.

Source:ARRL

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Digi Mode Ham Radio Hat for Raspberry Pi

Thu, 12/13/2018 - 1:12pm

“Hello Operators in the first video with the DRAWS HAT for the Raspberry Pi, I speculated about the impact this new hardware would have on the ham radio digital mode community.

Well now I have the DRAWS hat in my hands, so we can take a close-up look at what’s in the package, and what the hardware is all about.I’m running a hybrid station. That is to say, I use an Android tablet to interact with a headless Raspberry Pi. My Raspberry Pi is running JS8Call, FLDigi, WinLink, and WSJT-X. my Raspberry Pi Hardware is the 3B+ NW Digital Radio calls it a Digital Radio Amateur WorkStation.

I can’t tell you how stoked I am to finally have this product in my hands. In short, the DRAWS HAT makes integrating the Raspberry Pi with a HF radio easier and less expensive than ever before. Fewer cables, no audio interfaces, no cable mess, and a clean installation.Why we should care about DRAWSTo be honest with you, when I first ran into this device, I thought to myself, wow someone has been watching my videos, solving the problem of integrating the Raspberry Pi, with all the components we need for digital communications. DRAWS is a Raspberry Pi HAT.

This is a purely hardware solution combining several components for digital amateur radio, into a single integrated solution.”

See more: Link

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New Regions Brighten the Sun’s Face: Solar Storm Forecast 12-12-2018

Wed, 12/12/2018 - 5:03pm

“The fast solar wind we have been enjoying over the past week from an extended coronal hole is finally beginning to wane. We will likely remain at unsettled conditions over the next few days and return to quieter conditions by the end of the week. We also have 3 new bright active regions on the Earth facing Sun that are boosting solar flux for amateur and shortwave radio operators and emergency responders. This means radio propagation is back to marginal levels on Earth’s day side and will likely remain that way over the next week. See the details of these bright regions, catch up on aurora photos from the recent solar storms, and see what else our Sun has in store this week!”

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TS-890S – Kenwood

Tue, 12/11/2018 - 4:54pm
The most rewarding results often take place when faced with the harshest and most challenging conditions.
There are enthusiasts who know this all too well because of their love of DX. KENWOOD has the answer.
Achieve results through certainty and not circumstance. Delivered through impeccable receiver and audio performance.
This is our offering to you. Top in its class with three dynamic ranges.
Alive and well, the non-tiring KENWOOD tone keeps you listening. Receive performance on a whole other level from narrow bandwidth roofing filters that only full down conversion can provide

The TS-890S uses 8.248MHz 1st IF frequency down conversion for its receive signal system in order to continue the adjacent interference signal exclusion legacy refined in the TS-990S. This means you can use narrow bandwidth crystal filters with passband widths of 500Hz or 270Hz (optional YG-82CN-1) as roofing filters to achieve strong exclusion of unnecessary adjacent signals. The 1st mixer is the H-mode mixer also carried by the TS-990S. Conversion characteristics have been improved with fine-tuning of input/output matching as well the device used.

High-speed scanning with independent band scope receiver

The configuration of the band scope receiver has changed from the superheterodyne system used in the TS-990S to 1st IF sampling using an A/D converter (14bit/39MHz), and FPGA digital down conversion. This means a change in scanning method from step FFT to FFT, achieving highspeed updates to the display irrespective of span settings.

Local oscillator realizes superior C/N

Interference signal exclusion is not determined by roofing filters and signal system devices alone. The TS-890S has taken the VCO division of the TS-990S and developed it further, combining a VCO device with high C/N in the gigahertz band and a reference oscillation circuit with superior adjacent C/N to deliver C/N characteristics unattainable in conventional units.

The speed and quality of KENWOOD’s renowned IF AGC control

A variety of functions are realized through 32-bit floating-point DSP technology inherited from the TS-990S, including modulation/demodulation in all modes, IF filter, IF-AGC, and removal of interfering signals. Popular for its non-tiring and great-quality audio, the IF-AGC has undergone a facelift with a combination of roofing filters and IF filters, and has been designed to enable optimal control under various noise circumstances.

Evolved power to perform with diverse displays and auto-scroll.
A transmitter with stable output, quietness and high speed. Operational capacity reinforced with displays and various features

The seven-inch TFT color LCD is the same size as that used in the TS-990S. In addition to basic information including frequency, mode, and S-meter, the band scope and audio scope are also displayed. The TS-890S also displays further improvements in visibility and operability in tough usage scenarios such as competitions.

With the spectrum scope and waterfall screen display, the analogue meter is simultaneously displayed. The popular sub-scope display from the TS-990S has been incorporated as a filter-scope display

A band scope providing ease-of-ease

AUTO SCROLL MODE

In addition to conventional CENTER MODE and FIXED MODE, the unit comes equipped with an AUTO SCROLL MODE. While in FIXED MODE, if the receive frequency goes over the scope edge, then autoscroll will engage for half a screen width. Furthermore, with the EXPAND function turned on, the screen to be displayed next can be drawn in advance*. Also, with the SHIFT function, the receive marker can be set in the desired position on the vertical grid, which is convenient when displaying a non-receive frequency as the center display, such as for pileups during splits.

  • * Effective in spans under 200kHz. Image becomes slightly coarse when expanded.

Auto-scroll operation (span 10 kHz, EXPAND ON)
On the current screen (screen 2), if the frequency is changed to go over the top end of screen 2, it will automatically change to screen 3, and if it goes over the bottom end of screen 2, it will automatically change to screen 1. Waterfall screen creation normally commences after switching screens, but with the EXPAND function turned to ON, the display switches to the finished screen.

 CENTER MODE

When changing the receive frequency in CENTER MODE, there are many units that display a bright line that flows obliquely over the waterfall, but with the TS-890S, the bright line remains straight and enables tuning operation*. Switching to the follow display is also possible via the menu.

  • * During straight display, the waterfall bright line temporarily stops and undergoes parallel displacement. Image becomes slightly coarse when expanded.

● FIXED MODE

FIXED MODE allows you to switch between three kinds of display ranges with a single touch of the panel screen. The initial value is preset based on the band plan, but this can be easily adjusted to a desired scope.

Improved reference level operability ease-of-use

The TS-890S has improved operability of the reference level focusing on the visibility of the waterfall.

● Through optimization of each span, readjustment is mostly unnecessary when switching between them.*
● Settings are enabled for each band, and readjustment is also unnecessary for the PRE AMP ON and PRE AMP OFF bands.

  • * Spectrum scope waveform height changes during span switching.
Filter scope display

The popular sub-scope from the TS-990S is carried as a filter scope display. You can confirm receive filter selection status, roofing filter bandwidth, IF fi l ter passband information, receive for ex-audio spectrum, CW pitch frequency, and notch frequency all concentrated in one location.

Expanded touch operation scope

Basic operation of the TS-890S is through knobs and switches with a definite ‘clicking’ feel rather than touchscreen operation, but the below adjustment features and menu settings can now be changed via touch operation.

RX/TX equalizer level adjustment, meter type (analog white / analog black / bar meter) switching, FFT scope/X-Y scope switching on RTTY decode screen, FFT scope/vector scope switching on PSK decode screen, voice-audio file playback position change. Furthermore, with touchscreen tuning, in addition to the conventional CW tuning operation via longpush, a short push enables tuning using steps set via MULTI/CH, while on bands popular with operation in units of 1kHz, practical touch alignment is possible even in SSB.

Other display system features
  • ● Transmit digital meter enabling display of two kinds of transmit information even during analog meter display
  • ● Audio scope (spectrum scope, oscilloscope) able to be displayed simultaneously with reduced band scope
  • ● Band scope IF filter passband with display
  • ● Change of gradation for waterfall display
  • ● Frequency marker display function (Max. 50)
  • ● Transmit spectrum display (during CENTER MODE)
  • ● SWL display mode
Heavy-duty design delivers transmission performance able to withstand long hours of operation. Highly reliable 100W final-stage amplifier circuit.

The final-stage amplifier device is a Mitsubishi-made MOSFET RD100HHF1(Pch 176.5W) operating in push-pull. A MOSFET RD16HHF1 has been used for the drive amp, and a MOSFET RD06HHF1 for the pre-drive amp. Inter-stage matching and fine-tuning delivers superior transmit IMD even for a 13.8V final circuit, enabling operation with a clean and low-distortion signal.

Heavy-duty design with improved quietness

The unit employs a twin cooling fan system that uses a pair of 80 x 80 mm fans. Using two fans provides sufficient air flow at low rpm, making for superior quietness. The quietness level for the fans when operating has been improved by more than 5dB compared to our conventional models. Furthermore, the use of an aluminum die-cast chassis combined with a large heat sink makes for a heavy-duty design sufficiently capable of withstanding the tough conditions typical of contests or long hours of hard operation.

Built-in high-speed automatic antenna tuner enabling high-speed operation

The antenna tuner is a preset type also operable during receive and covering amateur bands from 1.8MHz~50MHz. High-speed operation and the proven relay method enable rapid QSY through instantaneous band changing. The menu can be used to set an ON/OFF memory for the antenna tuner for each band

Free settings enabled through linear amp control settings menu

A variety of linear amp connections have been taken into account, including self-made ones, and independent settings for various kinds of control at HF/50MHz bands are possible. Possible settings include: linear amp ON/OFF, transmission control (H active, L active), transmission delay ON/OFF, transmission delay time (CW/FSK/PSK) and (SSB/AM/FM), internal relay control, and external ALC threshold voltage adjustment.

Equipped with a TCXO (temperature compensated cr ystal oscillator) requiring no warm-up as standard, high stability of ±0.1ppm has been obtained in a wide temperature range covering from 32ºF~122ºF. External standard signal (10MHz) input is also possible.

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The post TS-890S – Kenwood appeared first on QRZ Now - Amateur Radio News.

Jordan’s First CubeSat, JY1Sat, is Designated as JO-97

Tue, 12/11/2018 - 12:55pm

JY1Sat, launched on December 3 from Vandenberg Air Force Base in California as part of the SpaceX SSO-A: SmallSat Express launch, has been designated as Jordan OSCAR 97 (JO-97). The 1U CubeSat is a project of the Crown Prince Foundation of Jordan. Telemetry has been received and decoded around the world since the launch.

The spacecraft’s name recalls the Amateur Radio call sign of Jordan’s late King Hussein, JY1. JO-97 carries a 435/145 MHz SSB/CW inverting Amateur Radio transponder and a Slow-Scan Digital Video (SSDV) system to transmit stored images.

The telemetry downlink is on 145.840 MHz, the transponder downlink passband is 145.855 – 145.875 MHz, with an inverting uplink on 435.100 – 435.120 MHz. — Thanks to AMSAT

Source:ARRL

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Light Beam Multi-band Antenna LBM-17M+20M April 30, 2015 No comments

  The Light Beam Multi-band Antenna has been developed for Hams who want one antenna which enables them to operate on multiple amateur bands. Bas... Read more

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THE TILTED TERMINATED FOLDED DIPOLE – A PRACTICAL BUILDING GUIDE March 02, 2015 No comments

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The post Jordan’s First CubeSat, JY1Sat, is Designated as JO-97 appeared first on QRZ Now - Amateur Radio News.

SAQ Alexanderson Alternator Transmission Set for Christmas Eve

Tue, 12/11/2018 - 12:37pm

Sweden’s Alexanderson alternator station SAQ has planned a Christmas Eve transmission on 17.2 kHz. The transmitter will be tuned up starting at around 0730 UTC, and a message will be transmitted at 0800 UTC. The 200 kW Alexanderson alternator is an electromechanical transmitter dating back to 1924.

The event will be streamed live on the Alexanderson site YouTube Channel. Listener reports are invited via email or direct to Radiostationen Grimeton 72, SE-432 98 Grimeton, Sweden. Amateur Radio station SK6SAQ will be active on Christmas Eve on 7,035 and 14,035 kHz on CW, or on 3,755 kHz on SSB. Two stations will be on the air most of the time.

Source:ARRL

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VHF Wouxun KG-D901 DMR Digital Radio Preview June 19, 2016 No comments

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Equipment CD-45II METERED ROTATOR W/FRICTION BRAKE 8.5 SF MT N TOWER October 31, 2015 No comments

The CD-45II handles 8.5 sq. feet mounted inside a tower, or 5 sq. ft. with mast adapter. Low temperature grease good to -30 F degrees. Bell rotator de... Read more

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New ! OM Power OM2200HF Amplifier 2.2 Kw April 18, 2015 No comments

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Antenna Which Antenna is Better? by Richard N4PBQ December 20, 2015 No comments

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The post SAQ Alexanderson Alternator Transmission Set for Christmas Eve appeared first on QRZ Now - Amateur Radio News.

FT8 Enthusiasts Urged to Upgrade Now

Tue, 12/11/2018 - 7:45am
WSJT-X 2.0 Full Release Now Available

The WSJT-X 2.0 software suite has been released, and developer Joe Taylor, K1JT, is urging FT8 and MSK144 users to upgrade to what will become the new standard, because the FT8 and MSK144 protocols have been enhanced in a way that is notbackward compatible with older versions of the program. That includes any version 1.9 releases.

“The new protocols become the worldwide standards starting on December 10, 2018, and all users should upgrade to WSJT-X 2.0 by January 1, 2019,” Taylor said on the WSJT-X home page. “After that date, only the new FT8 and MSK144 should be used on the air.”

Users are encouraged to read the new Quick Start Guide for WSJT-X. Gary Hinson, ZL2IFB, has released an FT8 Operating Guide.

Source:ARRL

(adsbygoogle = window.adsbygoogle || []).push({}); VHF YAESU FT-60R May 28, 2015 No comments

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Newly released receiver Icom IC-R 8600 compatible with digital wave February 14, 2017 No comments

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OM4001A General description and the advantages of the OM4001A amplifier The OM Power model OM4001A is an automatic power amplifier, designed for use o... Read more

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The post FT8 Enthusiasts Urged to Upgrade Now appeared first on QRZ Now - Amateur Radio News.

Icom IC-7100 Sending Email Via VHF, Winlink, Mobilinkd, ARES

Tue, 12/11/2018 - 7:02am

In this video, I will show you how I interfaced my 7100 with the Mobilinkd bluetooth TNC wireless to my PC to send emails on 144Mhz

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VHF Icom ID-4100A – 50W VHF/UHF Dual Band February 18, 2017 No comments

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Equipment DU800 – HA8DU Manual Tuners HF+6m November 09, 2015 No comments

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The post Icom IC-7100 Sending Email Via VHF, Winlink, Mobilinkd, ARES appeared first on QRZ Now - Amateur Radio News.

Your First HF Transceiver, Advice from Jim Heath W6LG

Mon, 12/10/2018 - 3:43pm

Jim Heath W6LG discusses buying your first HF transceiver if you are new to amateur radio. This is broad, general advice for someone buying a first HF transceiver.

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Antenna DUO8 15-20 separate feed – Momobeam November 22, 2017 No comments

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The post Your First HF Transceiver, Advice from Jim Heath W6LG appeared first on QRZ Now - Amateur Radio News.

Fox-1Cliff/AO-95 Receiver Suffers Apparent Failure

Mon, 12/10/2018 - 3:25pm

The receiver on the newly launched Fox-1Cliff/AO-95 CubeSat seems to have suffered a receiver failure that could render the satellite unusable, AMSAT said over the weekend. Efforts continue by AMSAT Engineering to establish the cause of the problem and determine if a fix is possible. AMSAT Vice President-Engineering Jerry Buxton, N0JY, reported over the weekend that the issue cropped up during efforts to commission Fox-1Cliff/AO-95.

“After a few days of tests, analysis, and discussion, it appears that Fox-1Cliff/AO-95 will not be commissioned as our fourth Fox-1 Amateur Radio satellite,” Buxton said. Commissioning began on December 4, right after the CubeSat’s successful launch a day earlier.

“AMSAT Engineering will continue to evaluate and test Fox-1Cliff/AO-95 for solutions to the anomaly, and your continued help in providing telemetry is appreciated so that we can have data throughout her daily orbits, rather than limited data over our US stations,” Buxton said. “The data, analysis, and testing could lead to a positive solution, but at the very least will be important to AMSAT’s satellite programs in providing information that would help us and others avoid similar situations with future missions.”

In a post to AMSAT-BB, Buxton mentioned one suggestion of employing a high-power station to see if AO-95 could hear its signal, but he added that AMSAT Engineering would not be offering a blow-by-blow narrative of its efforts to restore the satellite to operating condition, “unless it is something of merit or actionable.”

Buxton noted that AMSAT’s resources are limited, and all involved are volunteers. “Most — if not all — of our remaining Fox-1 engineers are also involved in the GOLF-TEE project, so I have asked them to give that first priority with their available volunteer time in order to keep the schedule,” Buxton said. “AO-95 is in orbit now, and we can vary the amount of attention on her as resources allow in order to achieve both goals. If the results of our investigation point to a possibility of recovery, be it partial, full, or some workaround method, we would all like to see her working as much as the rest of you, and that is a driver for this investigation.”

Buxton said he anticipates that AMSAT Engineering will continue to seek the cause of the apparent receiver failure, “until we have results or reach a dead end, because of the inability to take the lid off and look inside AO-95.”

“I will certainly be keeping everyone posted when we have something new to report,” Buxton said.

Source:ARRL.ORG

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VHF D Star & DMR for beginners- Radios, Hotspots and more February 28, 2018 No comments

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The post Fox-1Cliff/AO-95 Receiver Suffers Apparent Failure appeared first on QRZ Now - Amateur Radio News.

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