Antenna
Engineering the Doublet Antenna
“I made this doublet connector from a piece of 6mm Nylon 66 I had knocking about. Seems easy enough. I just hope the 450 ohm behaves itself and... Read more
AIM 4170D Antenna / Lab RF Analyzer
The AIM 4170D antenna analyzer measures the complex impedance (magnitude and phase) at each frequency of interest in the range of 0.1 to 180 MH... Read more
MULTIBAND H-POLE – VERTICAL WIRE ANTENNA FOR 160m – 10m by HB9MTN
“After several attempts to build a multiband C-Pole I finally ended up with the Multiband H-Pole. C-Poles for different frequencies on one pole... Read more
2-Element- DK7ZB – Quad Antenna for 5 Bands
“The Quad Antenna uses a single, central-fed frame with a feeder-line. Therefore you must use an ATU for operating this antenna. Excellent woul... Read more
The Inflatable Air Antenna On 20 Meters
https://twitter.com/AntennaAir Read more
Review
“A Day At MFJ.” How Their Products Are Made And How Quality Is Job
“A Day At MFJ.” How Their Products Are Made And How Quality Is Job Read more
ICOM IC-705 In Full Sunlight
ICOM IC-705 In Full Sunlight Read more
SDR School Part One The Basics
“If you feel a little left behind with all this new-fangled SDR stuff, this video is for you! SDR School is presented in a non-technical fashion... Read more
The Humble Barrel Connector
The Humble Barrel Connector Read more
Icom AH 705 Auto ATU for IC-705 – Review, and Mystery Solved?
Automatic antenna tuner specifically designed for IC-705 Read more
VHF
How to Build your own DMR Digital Radio Code Plug – Ham Radio Q&A
“A DMR radio isn’t any good if it doesn’t have any frequencies or channels programmed into it. Programming your first DMR radio might feel a lit... Read more
145 MHz Low Loss Bandpass Helical Filter
Low Loss Bandpass by Mile Kokotov Basic design of the filter is from RSGB VHF-UHF Manual, but I made some modifications. Both Inductors... Read more
Using MFJ-916B Duplexe
David, N9BSA, is trying to merge two antennas using a Diamond Phasing Harness ss770r, but Dave has a better suggestion…. The MFJ-916B duplexer i... Read more
Juentai JT-6188 VHF/UHF
Juentai JT-6188 Product Description The JT-6188 MINI UV Dual Band Radio provides you with a reliable, clear and efficient communications servi... Read more
VHF Newsletter 83 – New VHF Handbook
The latest edition of the VHF Newsletter has been mailed to all on the VHF mailing list and can be found here. The new version of the VHF Handbook, 8.... Read more
App - Mobile
SDR Touch demo on Android device using SDRplay RSP
This demonstrates turning an Android Tablet (or Android Phone) into a highly portable comms receiver or spectrum analyzer operating from Long Wave to... Read more
EchoLink for iOS version 2.10.18 is now available
EchoLink for iOS version 2.10.18 is now available in the App Store. This is a 64-bit build that is fully compatible with iOS 10 and modern iOS devices... Read more
What is Echolink? Ham Radio 2.0: Episode 56
Mark Goodrum, W5MHG, discusses Echolink for Ham Radio at the Duke City Hamfest Read more
QTH Locator Droid – Mobile App
The QTH Locator App was developed for HAM Radio use. This is the extended version of “Maidenhead Grid Locator” using Google Maps to show a... Read more
New ARRL Repeater Directory Will Leverage Crowdsourcing Technology
ARRL partner RFinder, the creator of a web and app-based directory of Amateur Radio repeaters worldwide, will supply all data for the 2017-2018 ARRL R... Read more
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