[amsat-bb] Re: Ts2000 with external preamps

Bob DeVarney W1ICW we1u at myfairpoint.net
Fri Aug 24 09:43:37 PDT 2012

I suspect the issue with the Icom preamps and a TS-2000 is that the Icom 
preamp does not appear to RF-sense.. if there's DC on the coax, it's in 
line, if there's not DC on the coax, it's bypassed. I run the SSB 
SP-2000 and it can handle 200 watts RF-sensed. No sequencer necessary 
with the rig barefoot.

The box you referenced on eBay protects the TS-2000 from amplifiers that 
need a lot of current from the radio to switch them, or have high 
voltage levels in the switching circuit ( bad design )

I did find this link which had a lot of useful info:


On 8/24/2012 12:15 PM, Lawn, Richard wrote:
> I have an icom preamp and wish I didn't. I'll send you the eBay link separately.
> Rick

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