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
GB 10elm 144MHz Quad
GB 10elm 144MHz Quad Details GB 10elm 144MHz Quad for Horizontal or Vertical mounting Turning:2,20m ( 7ft) Boom:3,80m (12ft) Aluminium ( 2 parts) Wire... Read more
![Ground Plane Antennas [ “ARRL The Doctor is In” podcast ]](https://qrznow.com/wp-content/uploads/2018/12/a-ground-plane-antenna-for-noaa-weather-stations-265x168.jpg)
Ground Plane Antennas [ “ARRL The Doctor is In” podcast ]
Ground Plane Antennas “Ground Plane Antennas” is the topic of the new (December 20) episode of the “ARRL The Doctor is In” podcast. Listen…and l... Read more
YouLoop HF loop antenna
HF loop antenna HF Portable & Flexible Receive Loop Antenna Covers HF frequencies (10 kHz to 30 MHz) Usable on VHF up to 300 MHz as a folded Dipol... Read more
Review
Unboxing the MFJ-998 – 1500 Watts automatic antenna tuner
Full 1500 watts SSB/CW…Digital & Analog SWR/WattMeter . . . All features of MFJ IntelliTuners– Ultra-fast, Safe Automatic Tuning . . . Wide... Read more
Unboxing TYT MD-380 – HRN 267
Unboxing a TYT MD-380 DMR HT, and a lot more rambling (because we don’t do unboxings). I also talk about the BTech (BaoFeng) UV 5×3 tri-ban... Read more
Ailuance HD-1 Dual Band DMR HT Debut [ Video ]
Check out this new dual band DMR HT and how easy it is to program! Read more
Review of CW Morse Paddles with weighted base
“CW Morse (cwmorse.us) makes a variety of inexpensive, 3D-printed Morse code keys. They’ve now added paddles for iambic keyers to their li... Read more
How to use the Magnetic Loop Antenna – Spring RELAX
“Here I want to show you how to use the Magnetic Loop Antenna. I have enjoyed the walk during this beautiful spring day. This day has been windy... Read more
Equipment
SPE Expert 1.5K-FA Linear Amplifier
300W • -60dB Product Specifications Powerful: solid 1.5kW in on on all modes. Very Light: about 10 kgs (about 22 lbs). Very Small: H 12, W 28, D 36 cm... Read more
ICOM IC-705 SDR transceiver Update
IC-705 HF/VHF/UHF Mobile Transceiver – Coming Soon! The new portable HF/VHF/UHF IC-705 has many great features such as SDR platform, internal ba... Read more
INRAD DMS-650 Desk Microphone
The INRAD DMS-629 and DMS-650 microphones have been chosen by FlexRadio as the official desk microphones for use with all of our transceivers. M629 o... Read more
VisAir – HF DSP Transceiver Standalone DDC DUC
Microprocessor-based data processing. A distinctive feature of the transceiver is the modern technology of processing data in DSP and output informati... Read more
Elecraft K3 Crystal ‘Roofing’ Filters
Elecraft K3 What “Roofing Filter” means to Elecraft K3 Filters and Dynamic Range There’s been so much discussion about this... Read more
News
St. Vincent Radio Amateurs on Alert During Volcano Emergency
Donald de Riggs, J88CD, on the Caribbean island of St. Vincent, says that on April 13, the 42nd anniversary of the 1979 eruption of the La Soufriere v... Read more
Can You Cook A Hotdog With Ham Radio?
“I’ve always been facinated by the physical affects of RF. Today, a light experiment testing if can cook hotdogs with RF. The test incorpo... Read more
Updated Radio Frequency Exposure Rules Become Effective on May 3
The FCC has announced that rule changes detailed in a lengthy 2019 Report and Order governing RF exposure standards go into effect on May 3, 2021. The... Read more
March 2021 Volunteer Monitor Program Report
The Volunteer Monitor (VM) Program is a joint initiative between ARRL and the FCC to enhance compliance in the Amateur Radio Service. This is the Marc... Read more
ARISS USA Gets IRS 501(c)(3) Recognition
ARISS-USA, a Maryland nonprofit corporation, has earned recognition from the US Internal Revenue Service (IRS) as a Section 501(c)(3) charitable, scie... Read more
