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Re: [TowerTalk] Using CATV splitters at HF

Subject: Re: [TowerTalk] Using CATV splitters at HF
From: Michael Tope <>
Date: Sat, 15 Jan 2011 04:10:51 -0800
List-post: <">>
The typically fall apart pretty quick, Pete. It's been many years since 
I've worked in that business, but the designs I've measured use just 
enough inductance to provide acceptable performance at 5 MHz. Any more 
inductance and you start compromising the high end response, especially 
the ones that work up to 1 GHz. They are dirt cheap, however, (cable 
companies usually pay ~$1 for the good ones) so it may be worth a try to 
sample a few to see if you can get acceptable performance down to 1.8 MHz.

73, Mike W4EF................

On 1/14/2011 2:17 PM, Pete Smith wrote:
> Has anyone ever measured what happens to insertion loss and isolation
> with a modern 6-way TV splitter on 160meters?  I am still working on the
> problem of putting 6 paralleled BPFs at the input of my QS1R, and have
> been steered this way by another RBN user.  These splitters seem to be
> typically rated for 25 dB isolation and 3.3 dB insertion loss down to 5
> MHz, so the question is what happens below that threshold.


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