Chris from our Development Team gives an overview of Over-The-Horizon (OTH) High Frequency (HF) Analysis in Systems Tool Kit (STK) that is new in version 12.1. This feature can be used for both communications modeling as well as radar modeling. This uses the VOACAP model for skywave propagation losses.
Antenna
A Dualband 50/70MHz Yagi with single feedpoint – 5/7 (12) element 144/70MHz Yagi (2.4m)
An Excellent Dual Band Yagi for 70/144MHz on a 2.4m boom and single feed point The 4-2-12 Dual Band Yagi has a total of 12 elements, 5 elements are us... Read more
New! Vertical Loop Yagi ( 6 to 40m ) – Ultra Beam
Vertical Loop Yagi See More : Link Read more
Rotators + Controller Rot1prog USB are smal, medium ideal for use with HEXBEAM
New product on offer – HEXBEAM SP7IDX TECHNOLOGY recommends SPID ELEKTRONIK – NEW 2017 rotators + controller Rot1prog USB are smal, medium ideal... Read more
Wideband Desktop Discone Antenna – 25 MHZ – 2000 MHz Coverage
“Here we take a look at the Skyscan Desktop antenna with a rated frequency range of between 25 Mhz up to 2 Ghz. We test the antenna indoor and o... Read more
Coil-loaded 40/80 Meter Inverted V Dipole Antenna by KG0ZZ
This 40 and 80 meter inverted V antenna is made with loading coils. It is a full size antenna on 40 meters and a shortened 80 meter antenna. The anten... Read more
Review
![Xiegu X5105 [ First Video´s]](https://qrznow.com/wp-content/uploads/2017/01/15977553_1934328260128796_9122523868845693855_n-1-265x168.jpg)
Xiegu X5105 [ First Video´s]
X5105 is a highly portable transceiver working at HF+6m band, with a built-in power output of 5W. Technical features: double-conversion superheterody... Read more
Yaesu Reveals the FTM-300DR Dual Band Mobile Radio
The new FTM-300DR provides stable and reliable 50W RF power output. As in recent YAESU mobile transceivers, the FTM-300DR is also equipped with a... Read more
![ELAD Products DUO-ART & SP1 [ Video ]](https://qrznow.com/wp-content/uploads/2017/10/duo_art-265x168.jpg)
ELAD Products DUO-ART & SP1 [ Video ]
DUO-ART & SP1 Read more
Equipment
How to build a Simplified Arduino CW Trainer by Tom N4TL
The winning article for the September 2016 QST Cover Plaque award is “Arduino CW Trainer” by Tom Lewis, N4TL. The QST Cover Plaque Award — given... Read more
DX-Patrol SDR ( Software Defined Radio ) Receiver with wide receiving range
The DX-Patrol is a Software Defined Radio (SDR) receiver with a very wide receiving frequency range. In contrast to the usual cheap USB DVB-T sticks t... Read more
The Foxx-3 Transceiver – 80m, 60m, 40m, 30m, 20m versions available
Connections are as follows: antenna via 50 ohm BNC, power via 2 pin 0.1″ header, headphones via 3.5mm mono or stereo jack plug or 2 pin h... Read more
Mercury Paddle- Bencher
The Return of the Legend. N2DAN’s legacy lives on in this beautiful dual paddle crafted from the finest materials– massive brass base with... Read more
The new Silphase R1 SDR receiver
Frequency coverage RX 0.1–30MHz Frequency resolution 1Hz Dial step 1Hz to 1KHz Dual VFO Direct sampling 16bit high speed 122 M/s ADC Mode CW, SSB, AM,... Read more
News
JA1TOKYO – Olympic Games
Olympic Games – JA1TOKYOOn July 16 JARL opened the special commemorative station ‘JA1 TOKYO‘ in Nishitokyo City, Tokyo, to commemora... Read more
Massachusetts Court Okays Amateur Radio Tower, Citing Board of Appeals’ Error
A judge in the Massachusetts Land Court has ruled that the Zoning Board of Appeals in the City of Framingham “erred” in revoking a building permit for... Read more
FCC Investigating Alleged “Jamming” on 40 Meters
Reports suggest that jamming stations have been deployed on the lower portion of 40 meters. The jamming appears to be coming from Cuba. The signals, s... Read more
Audio and visual of Cuba jamming 40M, making it to OH
Audio and visual of Cuba jamming 40M, making it to OH Audio and visual of Cuba jamming 40M, making it to OH. #hamradio pic.twitter.com/J4wHLPMGhF — Ha... Read more
Volunteer radio operators to the rescue in Belgian floods
July 2021: Brabant Wallon’s Emergency Radio Network volunteers stepped in when the Police building in Wavre, Belgium – including its Tetra anten... Read more
