HFU HF Underground

General Category => General Radio Discussion => Topic started by: ChrisSmolinski on December 20, 2011, 1725 UTC

Title: A comparison of three low power AM shortwave pirate transmitters
Post by: ChrisSmolinski on December 20, 2011, 1725 UTC

Recently shortwave free radio station Channel Z Radio conducted test broadcasts using three different transmitters, all on the same frequency with the same antenna, a half-wave horizontal dipole cut for 6925 kHz, mounted about 40 feet high. As described in a recent article, this setup should be ideal for NVIS or regional operation.

It was interesting to see how closely theory predicted real world performance for signal intelligibility and propagation...

http://www.hfunderpants.com/?p=271 (http://www.hfunderpants.com/?p=271)

Title: Re: A comparison of three low power AM shortwave pirate transmitters
Post by: Sealord on December 21, 2011, 0135 UTC

Cool article Chris - I always dig it when Channel Z does those DX test :)

Title: Re: A comparison of three low power AM shortwave pirate transmitters
Post by: Andrew Yoder on December 21, 2011, 1428 UTC

Really nice comparison & interesting article. Yeah, I always really enjoy the Channel Z DX tests, so it's really cool to see the side-by-side comparisons (especially because I missed this particular one).
Thanks for the article!
Andrew