RE: [amsat-bb] IC-910H converter protection

["Gary Gonnella" <gary@xxxxxxxxxxx>]

Thanks for the advice guys.
And sorry for the double post I had a problem with my email server.

> -----Original Message-----
> From: Barry - VA3BJD [mailto:va3bjd@rac.ca]
> Sent: Friday, November 01, 2002 1:46 PM
> To: gary@ridepix.com
> Subject: Re: [amsat-bb] IC-910H converter protection
> 
> 
> 
> On Thursday, October 31, 2002, at 12:51  PM, Gary Gonnella wrote:
> 
> > I have been looking at the available information to keep from 
> > transmitting
> > into the down converter. I would be curious to know how others have 
> > solved
> > this problem and also if anyone has come up with a way to quickly 
> > disable
> > (and reenable) the 144Mhz transmitter. I found a PTT inhibit in the 
> > setup,
> > but it applies to all transmitters not just the one.
> >
> > I plan to use a splitter on the downlink line and was thinking of 
> > putting a
> > couple of diodes across the feed into the radio. This should cause the 
> > radio
> > to go into SWR shutdown if I do transmit.
> >
> > Any ideas?
> >
> >
> 
> Hi Gary,
> 
> Barry VA3BJD calling.  My setup consists of a 910H and I use a 
> Transystem downconverter fed with 125' of RG-6 75 ohm cable. I have 
> transmitted into it a couple of times and have had no ill effects.
> 
> The long run of 75 ohm cable and the 6 db pad must present a high SWR 
> and the radio backs off the power.  I am not much of an expert so I am 
> not sure if this is what is happening.
> 
> I have transmitted a full 100 watts and then said Oh s***! Only to find 
> everything is well.
> 
> Good Luck
> 
> Barry
> VA3BJD
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