[hpsdr] PowerSDR Gain settings

[Dan Mitchell]

Chris;
See pages 11 and 12 in the manual that is linked below:

http://openhpsdr.org/wiki/images/4/4c/Penelope_manual_v_1-2.pdf

73,
Dan, W0IQ

-----Original Message-----
From: hpsdr-bounces at lists.openhpsdr.org
[mailto:hpsdr-bounces at lists.openhpsdr.org] On Behalf Of Chris Smith
Sent: Thursday, September 08, 2011 6:34 PM
To: HPSDR list
Subject: [hpsdr] PowerSDR Gain settings

***** High Performance Software Defined Radio Discussion List *****

Hi

Am I right in thinking that the Gain by Band (dB) settings in PA Settings on
PowerSDR should reflect the total gain after Penny(lane)?

If I'm interpreting this correctly then assuming a mean gain for
Pennywhistle of around 40dB LESS the 6dB pad I have on Pennywhistle's input
PLUS the 14dB mean gain of my PA the TOTAL gain = 40 - 6 + 14 = 48dB.

Should I set the Default gain to 48 or all band gains to 48 before doing a
Calibrate with a Cal. Target of 100(W?)? What is the Advanced Calibration
Routine?

I'm asking because I think I've destroyed the pair of MRF454s in my PA by
over driving them. :-(  I believe I should have had a 12dB pad on the input
of Pennywhistle to limit the input to my PA to 5W.

73

Chris G4NUX
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