[amsat-bb] Re: Diplexer

Nigel Gunn G8IFF/W8IFF nigel at ngunn.net
Sat Apr 9 08:46:10 PDT 2011

I'm pretty certain you're going to be looking at something custom made.
At qrp powers it might not be a problem to DIY a set of filters but with needing over 100dB of isolation between each 
band it sounds expensive.

On 09-Apr-11 15:28, Floyd Rodgers wrote:
> Well, I do not actually need ports for 220 and 900 "currently". I have
> been looking at doing this for some time.
> My current plan is to use stacked or series du/diplexors for the bands I
> want to play (<30MHz, 50, 145, 430). Upper power limit is 500w pep which
> makes it a little easier. If I pass the power limit, there is not much
> question I must run separate feed lines. Adding 1296 and 2.4g also means
> separate lines. (The entry panel to the shack is beginning to resemble a
> cell tower entry panel since I have two towers fed from one panel. One
> tower is hf/terrestrial<30-1296 stuff. The other is satellite
> 144,432,1296,2.4g)
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Nigel A. Gunn,  1865 El Camino Drive, Xenia, OH 45385-1115, USA.  tel +1 937 825 5032
Amateur Radio G8IFF W8IFF (was KC8NHF 9H3GN),  e-mail nigel at ngunn.net       www  http://www.ngunn.net
Member of  ARRL, GQRP #11396, QRPARCI #11644, SOC #548,  Flying Pigs QRP Club International #385,
            Dayton ARA #2128, AMSAT-NA LM-1691,  AMSAT-UK 0182, MKARS,  ALC, GCARES, XWARN, EAA382.

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