HF Unity Gain Antenna Survey (#246)

“A Necessarily Incomplete Survey of Amateur Radio HF Unity Gain Antennas–a look at the many, many antennas used in ham radio that have about the same gain as a good dipole. I select the antenna to be used in the Reference Station.”

News

The K7RA Solar Update

July 30, 2021 No comments

Tad Cook, K7RA, Seattle, reports: Solar activity slowed this week, with the average daily sunspot number declining from 48.9 last week to 33.9 this we... Read more

8-Meter Experimental Station on the Air from the US

July 29, 2021 No comments

WL2XUP is an FCC Part 5 Experimental station operated by Lin Holcomb, NI4Y, in Georgia. It’s licensed to operate with up to 400 W effective radiated p... Read more

Quirky APRS, HG-UV98 Lanch NLH Ham Radio Handheld Review

July 29, 2021 No comments

“Chinese radios have come a long way, many have impressive feature lists, but those features seem to be stuck behind programming or poorly imple... Read more

Product Discontinuation: IC-7851 HF All Band Transceiver

July 28, 2021 No comments

“We are sorry to announce that Icom has discontinued the IC-7851 HF All Band Transceiver. Since its launch six years ago, the IC-7851 has been I... Read more

ISS SSTV Aug 6-7 145.800 MHz FM

July 27, 2021 No comments

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

Software

SDR++ VERSION 1.0.0 RELEASED

August 02, 2021 No comments

“ After over a year of work, I’m proud to released version 1.0.0 of SDR++! For those who don’t know, SDR++ is a crossplatform (Windo... Read more

EZNEC PRO ANTENNA MODELLING SOFTWARE WILL BE FREE FROM 2022

July 21, 2021 No comments

“ On January 1, 2022 I will be retiring. I’ll be nearly 76 and want to spend more time at other things. EZNEC is and always has been devel... Read more

WSJT-X version 2.4.0 Now Generally Available, Version 2.5.0 on the Horizon

June 10, 2021 No comments

WSJT-X version 2.4.0 now is available in general release. According to co-developer Joe Taylor, K1JT, WSJT-X version 2.4.0, includes a... Read more

OpenWebRX 1.0.0 released!

May 10, 2021 No comments

Hello radio enthusiasts, today we’d like to announce the release of the next version of OpenWebRX, your SDR web server that just got a little bi... Read more

Icom IC-7850/IC-7851 Firmware Update (Version 1.40)

May 07, 2021 No comments

Icom has released a firmware update for the IC-7850/IC-7851 HF Amateur Radio transceivers. Also released is a related update to the RS-BA1 version 2 s... Read more

Contesting

W1AW/KL7 to Serve as ARRL Headquarters Station for IARU Event

July 07, 2021 No comments

W1AW/KL7 will be in Alaska to serve as the ARRL Headquarters (HQ) station for the International Amateur Radio Union (IARU) HF World Championship compe... Read more

New Field Day van! Winter Field Day 2021

June 28, 2021 No comments

“Whilst everyone in the USA enjoys summer field day, us here in VK have battled through our VHF/UHF winter field day! We have a new van and have... Read more

Safety for ARRL ham radio Field Day 2021

June 25, 2021 No comments

“Today we talk about Field Day safety, going through the ARRL field day safety checklist” Read more

The 62nd ALL ASIAN DX CONTEST – 2021

June 17, 2021 No comments

Operation in All Asian DX Contest (CW) All Asian DX Contest (CW) will be held according to the current rules. However, the Novel Coronal V... Read more

Radio Amateurs of Canada Invites Participation in the RAC Canada Day Contest

May 28, 2021 No comments

Here’s a chance to enjoy an operating event that is not on a weekend. Help Canada celebrate its birthday on the air during the RAC Cana... Read more

Review

Elecraft K4 Hands-on (UK Sample)

August 02, 2021 No comments

Elecraft K4 Peter Waters G3OJV, takes a trip around the features he used when evaluating the first production sample K4 to arrive int the UK. OVERVIEW... Read more

Pl-259 vs N-Connectors is similar to Ford vs Chevy

August 02, 2021 No comments

Michael, KI7QIB, is asking a simple question “Should I replace PL-259 connectors in a feedline with N-type connectors? Read more

Astron SS-30M-AP Power Supply First Look!

July 20, 2021 No comments

New from Astron is a 30-amp Power Supply with PowerPoles and 2 USB ports on the front panel. Let’s take a First Look at this! Connectors: [... Read more