[ICOM] Why are we so SWR-phobic

[John Luthy]

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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