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
---
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
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