[Elecraft] K3 Beta Firmware Rev. 3.57: Synchronous AM Detection (AM-S); misc. improvements

[David F. Reed]

I tried this out tonight; WWV on 10 and 5 MHz; found that at this time, 
Synchronous USB was better than LSB, and using CWT to auto-track showed 
as much as 7 Hz offset in tracking.  It was very interesting and I look 
forward to using it more for SWL in tough conditions.  Thanks!

73 de Dave, W5SV

Wayne Burdick wrote:
> K3 beta-test firmware revision 3.57 (with DSP rev. 2.45) is now  
> available.
>
> This revision includes Synchronous AM detection, which has a clear  
> advantage over the regular AM detector during selective fading. In  
> this mode, the K3 can optionally track AM stations that may be  
> slightly mistuned, as you might find in an AM round-table on 75 m.  
> It's also convenient for automatically zeroing in on AM broadcast  
> stations.