Switch-Mode vs Linear Supplies
Amateur radio transceivers demand power supplies which have a large current capacity. The average 100 watt radio transceiver requires over 20 Amps when in transmit mode. Overview A linear power supply uses a large...
Author: AD5GG
Yaesu FT-991 upgraded to FT-991A
I received my FT-991 back from Yaesu in the form of an FT-991A. They do not replace the front bezel, but the radio has a new sticker on the bottom showing that the model...
Alpha Delta Switch Arc-Plugs
I recently bought a couple of Alpha Delta coaxial switches, and noticed they come with a built-in surge arrester which can be replaced after a surge. They call them “Arc-Plugs”. These are on sale...
IC-7300 Average SSB power modification
If you Google the title of this post, I’m sure you’ll come across some results which detail a very simple modification you can make to your IC-7300 which some believe increases the RF output...
Behringer XM8500 for Ham Radio
My recent foray into amateur radio audio quality has had me looking at microphones, and since the audio process I just bought has an input for dynamic microphones, I got to researching those. I...
UR6QW Audio Processor
Please read about how you can help UR6QW in Ukraine here Edit: the setup which I use now is detailed in this post. Read on for the review…Also: UR6QW EQ Version 7 is out...
LMR-400 for Ham Radio?
I see lots and lots of posts from people extolling the virtues of using LMR-400 coaxial cable in their ham radio setups. LMR (Land Mobile Radio) cable was developed by Times Microwave Systems as...
WSPR Antenna Comparison
Having recently raised a Off-Center Fed Dipole, and figured out how to use WSPR with my FT-991, I thought it would be interesting to compare the OCFD with my 35′ End Fed Wire. Getting...
New Call Sign
New call sign is official, so the site changes to reflect it! Since I’ve been getting into HF more and more, having an eleven-syllable call sign has been rather a chore. I managed to...
Coaxial Cable Length Does Not Change Antenna SWR
I’ve heard this for decades, and I first heard it when I got into CB radio when I was a kid. You’ve gotta to cut your coax to the right length if you want...