[amsat-bb] Bias Tee was (no subject)

Mike Seguin n1jez at burlingtontelecom.net
Sun Feb 19 17:47:03 UTC 2017

Both Down East Microwave and SHF-Elektronik sell a bias tee.

What Radio are you using? Some can add voltage on the coax for you. For 
instance, the FT-847 can do it.

DEMI is $40-45.

For Coax switching, SHF-Elektronik has the CAS. You didn't mention power 


On 2/19/2017 12:33 PM, Dale Kubichek via AMSAT-BB wrote:
> These are very good devices (lil pricey), but an issue I found is they do not sell the shack-coax-end 'voltage input/isolation' box/device to power these via coax.
> Just like I'd like to find a solid low-loss on-mast two-position-coax-switch to be controlled via ~12VDC from the shack coax. Making changing CP or Vet/Horz easy with only one coax feed. I want them for 2m/70cm/1.2G. MFJ has one but it's not rated for >150MHz.
>  Best regards,
> Dale Kubichek, MS-EET, N6JSX
> Sidney, OH 45365  EN70vh
> http://groups.yahoo.com/group/HAM-SATs
> http://groups.yahoo.com/group/RDF-USA
> Message: 2
> Date: Sat, 18 Feb 2017 20:34:38 -0500
> From: Paul Stoetzer <n8hm at arrl.net>
> To: "kb2cwn at yahoo.com" <kb2cwn at yahoo.com>
> Cc: "amsat-bb at amsat.org" <amsat-bb at amsat.org>
> Advanced Receiver Research has the most cost effective mast-mounted RF
> switched preamps.
> http://advancedreceiver.com/page10.html
> SSB Electronics' line of preamps might be better, but are more expensive.
> http://www.ssbusa.com/NEWSSBPREAMPS.html
> 73,
> Paul, N8HM
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Mike, N1JEZ
"A closed mouth gathers no feet"

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