[hpsdr] VAC anomaly on RX2

[Doug W5WC]

Brian,

The "Master AF" does not affect the VAC channels. The "RX1 AF" and "RX2 AF"
controls do affect the VAC channels because they control the corresponding
preamps in DttSP. And DttSP occurs before VAC in the audio chain. If you are
using VAC with raw I/Q then there is no affect from these gain controls.

73,
Doug W5WC

From: Brian Lloyd [mailto:brian at lloyd.com] 
Sent: Wednesday, March 06, 2013 11:34 PM
To: Doug W5WC
Cc: Ronald Cox; hpsdr at lists.openhpsdr.org
Subject: Re: [hpsdr] VAC anomaly on RX2


On Wed, Mar 6, 2013 at 7:47 PM, Doug W5WC <w5wc at windstream.net> wrote:
***** High Performance Software Defined Radio Discussion List *****

Hi Ron,

On the multiple receiver versions turn the "Master AF" slider down and the
"RX1 AF" and/or "RX2 AF" to 100.

Why would the gain controls affect the gain on the VAC channel(s)? It seems
to me they should be completely independent of the audio gain controls.

-- 
Brian Lloyd, WB6RQN/J79BPL
3191 Western Dr.
Cameron Park, CA 95682
brian at lloyd.com
+1.767.617.1365 (Dominica)
+1.916.877.5067 (USA)


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