[Amps] Coax jumper

[Robert & Linda McGraw K4TAX]

I seem to recall that RG-58 is rated at 600 watts at frequencies below 30
MHz.  This presumes a matched load i.e VSWR at 1:1 which is what should
exist between the amp and the tuner except during "tune up" which should be
done at reduced power..  I'd expect that RG-58 to be OK in as much as the
typical SB-200 will output about 500 to 600 watts.

My personal preference is RG-8 foam or RG-213 for the jumper between the amp
and the tuner.

73
Bob, K4TAX


----- Original Message ----- 
From: "Vic Rosenthal" <vic at rakefet.com>
To: "Jeff Stewart" <stewgoat at indy.net>
Cc: <amps at contesting.com>
Sent: Wednesday, June 11, 2003 9:54 AM
Subject: Re: [Amps] Coax jumper


> Jeff Stewart wrote:
>  > Do I need RG-8 between my SB-200 and antenna tuner or will RG-58
>  > handle it.  Also I will use a relay box between the solid state radio
>  > and the amp to key it.  Does this need to be in a sheilded box since
>  > it only carries keyong voltage?
>
> RG58 will be fine, but make sure the connectors are installed properly
> (this goes for any type of coax, of course).
>
> As a matter of course I always recommend shielding control circuits and
> using shielded cables to connect them.  Under some conditions of RF in
> the shack you might have problems with RF upsetting the transceiver
> control circuitry.
>
> Vic K2VCO
>
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