[TowerTalk] BigIR question

Gary Schafer garyschafer at largeriver.net
Thu Dec 7 16:41:44 EST 2017


That's a whole lot more average power than a 1500 watt SSB signal.

73
Gary  K4FMX

> -----Original Message-----
> From: TowerTalk [mailto:towertalk-bounces at contesting.com] On Behalf Of
> Wes Stewart
> Sent: Thursday, December 07, 2017 12:50 PM
> To: towertalk at contesting.com
> Subject: Re: [TowerTalk] BigIR question
> 
> Legal power for classic AM on 80 meters is 375 W of carrier power.  If
> you run
> this then the PEP is 1500W and the antenna is within spec.
> 
> Wes  N7WS
> '
> On 12/7/2017 7:52 AM, Keith Dutson wrote:
> > That sounds reasonable.  You might want to contact SteppIR to help
> detect the problem.
> >
> >
> >
> > I was using a vertical antenna rated for 1500 watts, but it failed
> using 1500 watts AM on 80 meters.  SWR went very high causing amp (Alpha
> 87A) to fault.  Manufacturer said it would not handle AM, only PEP.  So
> much for my demonstration to a friend. <grin>
> >
> >
> >
> > 73, Keith NM5G
> >
> 
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