KA7OEI's blog

Random musings - usually on a technical (nerdy) subject - perhaps related to amateur radio and things found at ka7oei.com and modulatedlight.org. No AI is used to generate this content.

Friday, July 15, 2016

Fixing the squealing auto-tuner motors in the Kenwood TS-450

Important: If you own a Kenwood TS-450 - or perhaps any other radio - and the motors squeal when the auto-tuner activates, DO NOT ignore ...

Sunday, June 12, 2016

A 1:1 balun was the best overall choice for feeding the horizontal loop...

Years ago I bought a Heathkit SA-2060 (non "A" version) 2kW-rated antenna tuner at a local swap meet for a good price. While no...

Tuesday, May 31, 2016

Audio breakup on the JBL 4315B speaker

Over the past several weeks I noticed a problem with one of my JBL 4315B 4-way speakers: It sounded as though the woofer was "breaking...

Monday, April 18, 2016

Combatting scintillation effects on optical voice links

One interesting aspect of the amateur radio hobby that is rarely discussed is the use of the "Above 275 GHz" bands. While one mig...

View web version

Powered by Blogger.