I just updated my K3 with the latest firmware (4.39).  The laptop I have at 
the operating position does have a serial port, but I decided this was the 
time to check out my latest acquisition--a 4 port serial hub I had seen 
discussed here on the Elecraft reflector.  see 
http://cgi.ebay.com/New-USB-2-0-4-Port-RS232-Serial-Parallel-DB9-Adapter-/160582570565?_trksid=p3286.m7&_trkparms=algo%3DLVI%26itu%3DUCI%26otn%3D2%26po%3DLVI%26ps%3D63%26clkid%3D1166229576613738621

Anyway, it worked just fine!  Now I have more serial ports than I can say 
grace over!  One little blip though--the hub has 4 ports marked "com1, com2, 
etc.  When I installed them, my computer said it had opened com ports 6 
though 9.  So, I assumed "com port 1 on the hub would be "com port 6 on my 
computer.  Not so!!!  It turned out that com 1 on the hub was actually com 
port 8 on the computer, so they apparently don't get assigned in any order. 
I wasn't expecting the numbers to match of course, but I did assume they 
would be sequential.

Anyway, after I got that figured out, everything went very smoothly.  As far 
as I can tell at this point, these 4 port USB/serial hubs are pretty good. 
Anyone looking for a USB/Serial adapter, and needing more than one for all 
your goodies, might want to check this out.

Now I'm planning on trying to hook up my old Icom PCR-1000 to the hub and 
see if it really does give me multiple ports.  Don't see why it shouldn't.

Dave W7AQK


----- Original Message ----- 
From: "Wayne Burdick" <[email protected]>
To: "Elecraft Reflector" <[email protected]>; 
<[email protected]>; <[email protected]>
Sent: Wednesday, July 06, 2011 8:55 AM
Subject: [Elecraft_K3] K3 Firmware rev. 4.39: New main/sub AF mixer 
settings, high-res. S-meter read command, etc.


K3 beta-test firmware revision 4.39 (with DSP rev. 2.73) is now
available. See detailed release notes below.

Please send any questions to [email protected]. For instructions
on how to load beta firmware, see:

      http://www.elecraft.com/K3/k3_software.htm

73,
Wayne
N6KR

* * *

MCU 4.39 / DSP 2.73  July 6, 2011

* NEW AF MIXER COMBINATIONS (CONFIG:L-MIX-R): Added AB A, B BA, B B, B
A, A A. These may be useful for “SO2V” operation and various DX/
contest scenarios. ("A" refers to the main receiver, "B" to the sub.)

* KAT3 IMPROVEMENTS: T/R timing and power thresholds changed to
improve SWR measurement sensitivity.

* P3 and PC NOTIFIED ON RX ANT CHANGE: Switching RX ANT on/off now
informs the P3 and a connected PC of possible changes to the preamp
and attenuator settings. These are stored separately for the RX ANT on
and off cases.

* ADDED "SMH" COMMAND (high-resolution S-meter): This is presently
experimental; it is intended to work with W8WWV's “S-meter Lite”
program. "SMH;" responds with "SMHxxx;" where xxx is approx. 005 @
S-1, 040 @ S-9, and 100 @ S9+60. Resolution is approximately 1 dB.
NOTE: The value returned will probably be adjusted after
testing.“BG” (BAR GRAPH) REMOTE CONTROL COMMAND: Added 'R' or 'T' at
end of this command to indicate RX (S units) or TX (watts).




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