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
VK5SFA Wins the April QST Cover Plaque Award
The winning article for the April 2019 QST Cover Plaque award is “A High-Power 160- and 80-Meter Transmitting Loop Antenna” by Steve Adler, VK5SFA. Th... Read more
J-POLE REVOLUTION: KB9VBR ANTENNAS
J-POLE When Michael Martens, callsign KB9VBR, set out to make his first J-pole in 2001, his drive was purely utilitarian–the local ham club was settin... Read more
C31XR-JK Tribander 10/15/20m – Re-Designed, Optimized & Improved
The C31XR-JK (Tribander) has been re-designed, optimized & Improved from the very popular Force 12 Tribander of all times for contesters and Dx... Read more
The Yagi-Uda Antenna
A Yagi-Uda antenna, commonly known simply as a Yagi antenna, is a directional antenna consisting of multiple parallel dipole elements in a line,[1] us... Read more
A Simple Wire Tuner
Here’s a basic, but effective and efficient, antenna tuner for feeding random wires, especially half-wave end-fed wires. Read more
Review
Tips on Operating Linear Amateur Radio Satellites (Part 2)
Tips on Operating Linear Amateur Radio Satellites (Part 2) Read more
Comparing the RSP1 and RSP2 – SDRplay
SDRplay RSP2 Over on YouTube user Mile Kokotov has uploaded two new videos that show both the SDRplay RSP1 and RSP2 receiving VLF, LF and AM BC signal... Read more
Review of QRP Labs QCX QRP Radio
“Unboxing, building and using the QRP Labs QCX single-band, 5-watt QRP radio. This advanced technology radio borrows ideas from software-defined... Read more
Equipment
![Yaesu FT-DX101D/MP [ English Brochure ]](https://qrznow.com/wp-content/uploads/2018/11/FT-DX101mp_u-265x168.jpg)
Yaesu FT-DX101D/MP [ English Brochure ]
Yaesu FT-DX101D/MP The new FTDX101D is utilizing the latest SDR Technology and classified as our High-End HF line, the FTDX series, which amateurs hav... Read more
Fairwaves launches new SDR products
Fairwaves is launching two new “X“- products this fall: XYNC – the ultimate low-cost massive MIMO SDR, with up to 32×32 transmit/receive channels XCOM... Read more
Station Master DeLuxe – microHam
Station Master DeLuxe™ is big brother of regular Station Master™ and has all its capabilities but provides more ergonomic user interface with... Read more
Stryker SR-955HPC 10 Meter Radio
Stryker SR-955HPC The Stryker SR-955HPC 10 meter radio just keeps getting better. Released back in 2012, it set the bar high enough that competitors a... Read more
Build a 25’-50’ free standing Tilt then Crank up tower antenna
Build a 25’-50’ free standing tower Detailed Description You will receive the drawing package so you can build your own tilt up tower. To be used for... Read more
News
Ham Radio’s SuitSat Returns in Short Horror Film
SuitSat loses its innocence in a new video short sci-fi thriller Decommissioned. “Inspired by true events,” the video short resurrects the 2006 spaces... Read more
Capture the MAGIC of Six Meters — eBook
Have you ever wondered about the “Magic” of Six Meters? After all, you’ve probably pressed the six meter button on your rig and failed to find any mag... Read more
Eastern Iowans Rely On Ham Radio When Severe Weather Strikes
A derecho with winds of 80 to 100 MPH struck eastern Iowa last August, disrupting power and telecommunications for some 400,000 residents. But, as... Read more
David A. Duncan, K7DUN, Wins the January 2021 QST Cover Plaque Award
The winning article for the January 2021 QST Cover Plaque award is “CW-ELMER – An Advanced Morse Code Learning System,” by David A... Read more
ISS SSTV 145.800 FM Jan 28-29
Russian cosmonauts on the International Space Station (ISS) are planning to transmit Slow Scan TV images on 145.800 MHz FM using the SSTV mode PD-120.... Read more
