[Elecraft] Minicircuits splitter for diversity?

Mel Farrer farrerfolks at yahoo.com
Mon Nov 6 20:19:49 EST 2017


OK, Let's talk about the isolation charteristics of just transformer splitters and REAL HP/LP duplexers.  With splitters, I think you are subject to mismatch isolation problems if the loads are not matched.  Same with Duplexers, but most desighs allow for some matching, at least the ones I design do.
Mel, K6KBE

      From: Alan Bloom <n1al at sonic.net>
 To: jim at audiosystemsgroup.com 
Cc: elecraft at mailman.qth.net
 Sent: Monday, November 6, 2017 4:57 PM
 Subject: Re: [Elecraft] Minicircuits splitter for diversity?
   
And don't forget that the isolation spec assumes a perfectd 50-ohm
termination on all ports.  For example if one of the ports is seeing a
load with a 10 dB return loss, then the isolation will be no better than
10 dB. 

Alan N1AL 

On 2017-11-06 13:06, Jim Brown wrote:

> No -- the Mini-Circuits splitters provide significant isolation between the ports so that, for example, a local oscillator on one port isn't fed to the other port(s). The degree of this is the dB spec for isolation.
> 
> 73, Jim K9YC
> 
> On 11/6/2017 12:21 PM, Michael Walker wrote: 
> 
>> Is that any different than your basic cable splitter other than it has BNC
>> and not F connectors?
> 
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