[ICOM] SSB power out on 706

[David J. Ring, Jr.]

Adam,

That's a really good article.  You write some nice stuff.  That would be 
very helpful for some to see the waveform on a scope and understand why 
their output can't be a constant 100 watts on SSB.

Always a delight to read your technical writing.

73
David N1EA
----- Original Message ----- 
From: "Adam Farson" <farson at shaw.ca>
To: "'ICOM Reflector'" <icom at mailman.qth.net>
Sent: Friday, June 23, 2006 1:18 AM
Subject: RE: [ICOM] SSB power out on 706


Hi John,

If you have access to an oscilloscope, you can measure PEP quite accurately
using this method:

http://www.ab4oj.com/peptest.html

Cheers for now, 73,
Adam VA7OJ/AB4OJ


-----Original Message-----
From: icom-bounces at mailman.qth.net [mailto:icom-bounces at mailman.qth.net] On
Behalf Of John Geiger
Sent: 21 June 2006 21:45
To: ICOM Reflector
Subject: [ICOM] SSB power out on 706

I was testing out an Icom 706MKII I got recently, and the power out on SSB
looks low.  It is putting out about 90 watts on RTTY and FM, but when I go
to SSB, using a PEP wattmeter (requiring 12 volts) it is only reading about
40 watts.  Is that normal for SSB, or is it running low?  I know that power
out will look low on a regular watt meter on SSB, which is why I was using
the PEP wattmeter.

If the power is low on SSB only, any ideas as to what could be wrong?  I had
the compressor on, and the mic gain was set on 7.  I was doing the testing
into a dummy load, so there is no problem with SWR.

73s John W5TD



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