I did a little more testing with Preview 8 and if I am using VAC (no TX
audio chain processing) I get the same power output as Preview 7.
Without VAC the output still seem to be down about 40-50%.
Has anyone else noticed this behavior with Preview 8?
-Tim
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Tim Ellison ( [EMAIL PROTECTED] )
Integrated Technical Services ( http://www.itsco.com )
-Original Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of Tim Ellison
Sent: Monday, December 19, 2005 5:02 PM
To: FlexRadio@flex-radio.biz
Subject: [Flexradio] RF Output down 50% from preview7
I noticed earlier today that my forward power when transmitting on SSB
was significantly lower with Preview 8 than with Preview 7.
As a test, I ran Preview 7 and tested the RF watts out when I had voice
peaks of 0 on the ALC meter. The SDR Forward Power meter showed peaks
in the 90 watt range. This was verified on my watt meter as well.
I deleted the database from preview 8 and restarted the application. I
imported Preview 7's database with out any problems. I verified that
the TX settings were the same between the two versions.
When testing with Preview 8, the RF power out only registered about
30-40 watts with the exact same ALC values (peaking on 0). My watt
meter also showed about a 50% decrease in power.
I took great care to keep all the variables the same between the two
test cases. I decided to violate Fett's Law so I shut down the radio
and did some work that pays the bills and came back later to repeat my
experiment. I got the same results.
Would there have been an change in the TX audio chain that would have be
responsible for this reduction in output power?
-Tim
---
Tim Ellison mailto:[EMAIL PROTECTED]
Integrated Technical Services http://www.itsco.com/
Apex, NC USA
919.674.0044 Ext. 25 / 919.674.0045 (FAX)
919.215.6375 - cell
PGP public key available at all public KeyServers
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