[ICOM] Why are we so SWR-phobic

[John Geiger]

Yes, but it is frustrating knowing that it doesn't have to be that way

73s John W5TD

----- Original Message ----- 
From: "John Luthy" <jluthy at worldnet.att.net>
To: "ICOM Reflector" <icom at mailman.qth.net>
Sent: Sunday, June 18, 2006 10:23 PM
Subject: Re: [ICOM] Why are we so SWR-phobic


> I agree,
> 
> My 746 is so agressive on swr that it only puts out 15 watts on 144
> mhz with a antenna that has a swr of 2:1
> 
> Oh well,  they guarentee the thing will run 100% brick on the key duty
> cycle. and it hasen't died yet. So I guess I'll just add a transmatch
> for 2m and enjoy.
> 
> John
> N7JL
> 
> 
> 
> 
> ----- Original Message ----- 
> From: "John Geiger" <w5td at lcisp.com>
> To: "ICOM Reflector" <icom at mailman.qth.net>;
> <kenwood at mailman.qth.net>; <yaesu at mailman.qth.net>;
> <dx-list at yahoogroups.com>; <cq-contest at contesting.com>
> Sent: Sunday, June 18, 2006 3:16 PM
> Subject: [ICOM] Why are we so SWR-phobic
> 
> 
> Am I the only one who things that the SWR protection circuits in
> currents are ridiculous?  I mean, most of them start cutting power
> back with a 1.5:1 SWR?  Are today's rigs so poorly designed that you
> could damage the finals with a 2:1 SWR?  Older solid state rigs used
> to handle that just fine.  The ad for the Yaesu FT107M advertised that
> it would put out 75% power into a 3:1 SWR!!  Most Ten Tecs will put
> out almost full power into a 3:1 SWR.  But most other moderns rigs are
> putting out 50% power or so into a 2:1 SWR.
> 
> The worst is the Yaesu FT857/897 series which cuts up the audio if the
> SWR gets above 1.5:1 or so, and people think that this is a good
> thing?
> 
> So what is going on with the rig designers?  Do people really want
> this aggressive of an SWR circuit?  I find it kind of annoying to have
> to return the tuner every 25 kcs or so on some radios.  Are the finals
> today really that fragile?
> 
> Or is it just me?  Anyone else with ideas?
> 
> 73s John W5TD
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> ----
> Your Moderator: Dick Flanagan K7VC, icom-owner at mailman.qth.net
> Icom Users Net: Sundays, 1700Z, 14.316 MHz
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>