[hpsdr] WSJT-x, VAC, PowerSDR and Windows 10 Problem Solution.

[Al Pawlowsi]

Been running WSJT-x with VAC connecting PowerSDR (ANAN-100b) for about a 
year with no problems. I had set up VAC for one channel of mono 
16bit/48k sps. About three days ago, I started having all kinds of 
modulation problems - pops, clicks and amplitude variations. Since then, 
I have been trying all kinds of changes to PowerSDR and VAC speeds 
latency settings without any luck.

I just found the solution. I set VAC to make two channels, vs one, and 
using one for output from WSJT to PowerSDR and the other vice-versa. I 
can now run even slightly better (cleaner modulation and 384Ksps) than 
ever before.

I have VAC 4.15, PowerSDR 3.3.9, WSJT-X 1.6.0 r6263 and latest Win10pro 
on a 3gHz I3 dual core (a bootcamped 2011 iMac). I have VAC set for 7ms 
interrupt latency, auto buffer size, 10max instances and channel mixing 
- they were the (default, I think) settings with one channel and 
changing them did not help before making two channels instead of one.

Don't know if this was due to a recent Win update or what, but happy it 
works. Hope it helps someone else.

Al   K6AVP

BTW, the (Apple Win) driver for my 2003 Apple Bluetooth keyboard did 
stop working at about the same time. The keyboard is still discovered by 
Win10, but pairing fails. I had to go to a USB keyboard. The old BT 
keyboard works fine booted in OS X 10.11.6 on the iMac and under Windows 
7pro on my powerbook.