Hi Wes,
Good thought! I will check this out tomorrow. Maybe the new DSP audio
daughter-board affects the sensitivity of the VOX.
If, not, I'm just hopeful that someone has seen these symptoms before and found
a solution. Otherwise, I will need to take the rig all apart on Saturday to
check that everything is plugged in correctly. I'm pretty sure that it will be
a waste of time, because I am a very careful and experienced builder. I
carefully checked the pins on the various boards and connectors as I plugged
them in. Still, nobody's perfect, so you never can say.
I miss my K3.
Many thanks for your help and VY 73,
John, W2GW
----- Original Message -----
From: Wes Stewart
To: John E. Reiser
Sent: Thursday, June 03, 2010 6:31 PM
Subject: Re: [Elecraft] K3 Mods
Do you have the Line In (Mic) gain turned up in Data mode? Unlike any
other other rig I've owned, the mic gain affects the VOX sensitivity.
Wes
--- On Thu, 6/3/10, John E. Reiser <reis...@optonline.net> wrote:
From: John E. Reiser <reis...@optonline.net>
Subject: [Elecraft] K3 Mods
To: elecraft@mailman.qth.net
Date: Thursday, June 3, 2010, 2:25 PM
Hello Everyone,
Yesterday, I did the following mods for my K3 #384, running FW 3.99:
K3DSPUPGD
K3 Negative ALC and External Band Data Pull-up Mod
Front Panel Mike Circuit Mod
IF Buffer Gain Mod.
I was scrupulous about ESD precautions, using a wrist strap and
anti-static mat.
Before the mods, everything worked perfectly.
After the mods, receive seems OK, audio is improved, but I have some
problems on transmit:
1) Attempting to transmit RTTY with MMTTY now produces no RF output
from the K3. I use AFSK A for RTTY. It seems like I have no T/R switching.
Tune, CW and SSB work correctly and produce the expected output levels.
2) The K3 does not key up my ACOM 1000 amp on Tune or CW. It keys
the amp OK on SSB when the PTT button on the mike is pressed. It also keys the
amp OK in CW mode if the mike PTT button is held down. I checked that VOX is
enabled for CW. RTTY produces no output from the amp under any circumstances.
I have reloaded FW 3.99, and then went back to version 3.97 (all
files), but the problems remain. I have checked and rechecked and rechecked
all cable connections to the K3 back panel, as well as my CONFIG and MMTTY
settings. Everything looks OK, but I may have missed something. BTW, I don't
use ALC with the amp.
To summarize the problems:
1) The K3 produces no output in RTTY
2) The Key Out jack (for keying the amp) does not function with VOX.
Any ideas?
Many thanks and 73,
John, W2GW
______________________________________________________________
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net
This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
