[ICOM] R7000 dumb question of the day

Ekki Plicht (DF4OR) ep at plicht.de
Thu Dec 1 14:32:32 EST 2005


On Thursday 01 December 2005 02:05, Bonddaleena at aol.com wrote:
> It is a 'power through' model. No power connections available. Obviously,
> they send 12 VDC up the coax to power it. I assume it would be easy to put
> a "T" connector before the preamp and supply it with 12 VDC via a small
> choke. 

There are so called "Bias-T"s aka "DC injector"s on the market which serve 
exactly that purpose to protect the rig from DC voltage on the RF input. I 
would either carefully check the schematics and make sure that DC isn't 
harmful or use one of those Bias-Ts.

73,
Ekki, DF4OR



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