Jim makes and then shows his tunable half wavelength dipole antenna. Using an antenna analyzer,
Jim finds the resonant frequency and the lowest SWR do not occur at the same frequency.
Review
Radioditty GD-73 DMR HT – Programming and Using
PALM SIZE DMR: Compatible with MOTOTRBO, the GD-73A features lightweight and mini size that can easily fit your pocket. The clear LCD screen and compa... Read more
The Humble Barrel Connector
The Humble Barrel Connector Read more
Knot for Coax Strain Relief
“Here’s a handy knot you can use to tie to coax to allow strain relief at coax connections on your antennas. I saw this in QST some time a... Read more
Getting Started with Chameleon F-LOOP 2.0 Magloop Antenna
The CHA F-LOOP 2.0 was designed with portability, ease of use simplicity, ruggedness and high performance in mind. Unlike any other similar antennas o... Read more
Equipment
PiHPSDR Controller – Apache Labs
The PiHPSDR Controller is a stand-alone interface for the ANAN/OpenHPSDR Hermes SDRs, it is ideal for mobile applications and for users who prefer phy... Read more
Fold-Over Towers – ROHN 55G
Get all of the benefits of a Self-Supporting ROHN 55G tower, without ever having to climb! With a ROHN 55FK, you can easily access the top moun... Read more
KX-QRP 2nd Look – Elecraft KX2 or KX3
The KX-QRP 2nd L👀K is an accessory for use with the Elecraft KX2 or KX3 Radios. These radios have the ability to decode RTTY, PSK and CW signals (with... Read more
MFJ-868B GIANT HF + 6M, SWR/WATTMETER
MFJ-868B World`s largest SWR/Wattmeter has giant 6½” meter World`s largest HF+6M SWR/Wattmeter measures a giant 6½ inches diagonally across meter scal... Read more
VisAir QRP
VisAir QRP Read more
Automatic Semiconductor Analyser
Connect any way round to automatically identify and measure a wide range of semiconductor devices. The DCA55 will automatically identify the type of t... Read more
VHF
Icom IC-SAT100 Satellite PTT Radio
“Video, presented by James Heming which provides a comprehensive introduction to the Icom IC-SAT100 Satellite PTT Radio system, how it works, fe... Read more
News from DARC — 50 MHz
The Federal Network Agency made a preliminary provisional implementation of the WRC-19 results for the 6‑m band in MItteilung 111 from Amtsblatt 08/20... Read more
Larsen VHF/UHF Mobile Antennas KG2/70CXPL
VHF/UHF Mobile Antennas Antenna, VHF/UHF, Glass Mount, 144-148/442-448 MHz, 100 W, 32.75 in. Max Height, 14 ft. RG-58, PL-259, Each Brand:LARSEN ANT... Read more
ME3000-V 2m EME – VHF Amplifier ( 3KW – 144MHz )
VHF Amplifier Frequency Coverage: 144-146MHz amateur band. extensions and/or changes on request. • Power Output: 3000 W CW/SSB • Intermodu... Read more
FM / VHF Operating Guide by K0NR
FM/ VHF Operating Guide By Bob Witte, KØNR This guide is intended to assist new amateur radio operators in figuring out what VHF FM and repeater opera... Read more
Baofeng Tech: Mobile Radios
“We’re excited to unveil the UV-2501 and UV-5001 Dual Band Mobile Radios. We have spent the last several months refining our first... Read more
Digital Modes
FT8DMC 3rd Anniversary-Activity Days 2020
To commemorate our 3rd anniversary, special event stations will be on air during the FT8DMC Activity Days from 1. to 31. July 2020. All stations will... Read more
K1JT , JOE TAYLOR HINTS AT POSSIBLE NEW MODE!
In a post to the WSJT-X email group today, Joe Taylor K1JT hinted at some ongoing experimentation of a new digital mode with sub-modes. His post was a... Read more