[TenTec] O2 output level with PSK aux in

Bob McGraw - K4TAX RMcGraw at Blomand.net
Wed Feb 11 08:34:39 EST 2009

For and clean and correct PSK signal the transmitter output should be about 
45 to 55 watts max.  SP should not be used.  What you are seeing is likely 
the result of the ALC action, controlling the power output as it should.

Running 100 watts out on PSK will make lots of unhappy folks on the 
frequencies adjacent to yours as a result of excessive data sidebands.

Bob, K4TAX

----- Original Message ----- 
From: "Jim M." <jmiller1706 at cfl.rr.com>
To: "Discussion of Ten-Tec Equipment" <tentec at contesting.com>
Sent: Tuesday, February 10, 2009 8:54 PM
Subject: [TenTec] O2 output level with PSK aux in

> Using HRD sound card into rear panel auxiliary input.  With speech proc 
> off I get only about 50 watts out with max audio drive measured on rf 
> wattmeter.  The O2 meter shows 100 watts, not 50.  If I turn SP on, I can 
> get closer to 100 watts out.  The O2 power meter appears to be reading 2x 
> what is actually being transmitted?  And or the drive level without the SP 
> is cut 50 percent?  What's going on in the DSP?  Any suggestions on how to 
> get an honest 100 watts on Psk? Jim N4BE
> Jim
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