[Elecraft] {OT} - Variation on use of a coaxial switch

Bob Nielsen n7xy at n7xy.net
Fri Dec 30 18:47:34 EST 2016


As long as there is sufficient isolation in the switch there should be 
no problem.  I have done exactly as you describe with my KX2 and IC-7100 
using a MFJ-1702C switch, which is rated for better than 60 dB of 
isolation to 300 MHz.

Bob, N7XY

On 12/30/16 2:49 PM, stan levandowski wrote:
> I would like to use a coaxial switch for an unintended use and I'm not 
> sure if it's a good idea in terms of RF isolation and potential 
> equipment damage.
>
> I'm no expert in this area but I know this list is a wealth of expert 
> opinion, so here's my question:
>
>
> I want to buy a two position coaxial switch.  I want to connect ONE 
> antenna to it and switch this antenna between a KX2/KXPA100 (100 
> watts) and a KX1 (about 3 watts).  The coax cable coming from this 
> switch to the KX2 is a short piece of RG8X and the coax cable going 
> from this switch to the KX1 is 25' of RG-174 (yes, I already computed 
> the dB loss and I can live with).
>
>
> Am I likely to cause any damage to to either piece of equipment?
>
>
> Thanks,
> Stan WB2LQF
>
>
>
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