[amsat-bb] Re: Diplexer

Jeff Moore tnetcenter at gmail.com
Sat Apr 9 16:12:06 PDT 2011


Bob,

You shouldn't need either if you plan on using a dual-band antenna. 
However,  You'll get good uplink, but your downlink will likely suffer. 
Then's when you want to use a Diplexer to split your receive signal out so 
that you could put a preamp in line or even better, a beam antenna and 
preamp.

Jeff Moore  --  KE7ACY

----- Original Message ----- From: "Bob- W7LRD" <w7lrd at comcast.net>

I'm really trying to "absorb" all this diplexers / duplexor thread. 
Specifically I have a new FT-8800 and want to run FM sats from my truck. Not 
wanting to reinvent the wheel would a simple dual band whip suffice. Then 
maybe requiring a preamp, and how all that works maybe with a di / du etc. 
My head is starting to hurt.

73 Bob W7LRD



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