[amsat-bb] Filter out 3rd harmonic of 145MHz

Mike Diehl diehl.mike.a at gmail.com
Sun Mar 26 23:23:11 UTC 2017

The first question I would ask is if 100w is really necessary. After that, you may want to look into using a diplexer as a low pass filter or find a dedicated 2m LPF. 

Mike Diehl

> On Mar 26, 2017, at 11:58 AM, Paul Baldock <pbaldock at frontier.com> wrote:
> I'm looking for a filter suggestion to reduce the third harmonic (435 MHz) of my 145MHz 100W signal. How much attenuation would I get from a simple 435MHz quarter wave stub?
> Thanks
> - Paul KW7Y
> _______________________________________________
> Sent via AMSAT-BB at amsat.org. AMSAT-NA makes this open forum available
> to all interested persons worldwide without requiring membership. Opinions expressed
> are solely those of the author, and do not reflect the official views of AMSAT-NA.
> Not an AMSAT-NA member? Join now to support the amateur satellite program!
> Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb

More information about the AMSAT-BB mailing list