That's fine. It's just my opinion. No problem.
But, I didn't say to replace an amp if it gets warm. That's the wrong
analogy.
Coax doesn't generate heat. An amp does.
Bill, N3RR
----- Original Message -----
From: Barry Kutner <w2up@mindspring.com>
To: Bill Hider <n3rr@erols.com>; <TOWERTALK@contesting.com>
Sent: Friday, March 30, 2001 4:40 PM
Subject: Re: [TowerTalk] COAX connector heating
> I agree with Bill, W7TI.
> When I am contesting on RTTY, full power, on 10m, my coax
> (RG213) gets a bit warm to the touch. We're not talking hot, or hot
> enough to melt the dielectric or jacket. Using larger coax is overkill,
> as it is within the coax's specs. It's like saying if your amplifier gets
> warm, you need a bigger amplifier!
> Barry W2UP
>
> On 30 Mar 01, at 15:31, Bill Hider wrote:
>
> > If the coax is routinely getting warm due to the transmitted energy
> > being applied to the coax, and the load (antenna) is properly matched,
> > then it's the wrong size coax for the application.
> >
> > If your coax is getting warm under the conditions described below, you
> > are losing power in the coax which could result in a fire safety
> > hazard (not to mention lost QSOs). I'd check the VSWR to be sure it's
> > as *flat* (as close to 1:1) as possible. That will ensure any heat
> > problem with the coax can be isolated to a component in the line
> > (connector/switch/adapter/lightning arrestor, etc). If you still wish
> > to operate this way, move up to higher power-handling coax, such as
> > LDF-4, etc.
> >
> > Bill, N3RR
> >
> >
> > ----- Original Message -----
> > From: Bill Turner <w7ti@jps.net>
> > To: Bill Hider <n3rr@erols.com>
> > Cc: <towertalk@contesting.com>
> > Sent: Friday, March 30, 2001 3:50 PM
> > Subject: Re: [TowerTalk] COAX connector heating
> >
> >
> > >
> > > This statement is too broad. At 1500 watts of RTTY on 10 meters,
> > > any coax
> > will
> > > be slightly warm to the touch.
> > >
> > > 73, Bill W7TI
> > >
> > >
> >
> >
>
>
> --
> Barry Kutner, W2UP Internet: w2up@mindspring.com
> Newtown, PA FRC alternate: barry@w2up.wells.com
>
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