[Elecraft] K2/100 Locking Up in Data Mode

[Jim Campbell]

I'm playing with JT65-HF. I have no problem with reception. When I send 
a message (48 seconds of key-down at 5 W) the message is sent correctly 
but after transmission stops the front panel controls are frozen. By 
frozen I mean that the only control that is effective on the front panel 
is the power switch. The dial doesn't change the frequency and all 
switch depressions are ignored.

I built my own interface. The two audio lines (from radio to sound card 
and from sound card to radio are decoupled with small Radio Shack audio 
transformers. The keying line from the USB to serial dongle uses an 
opto-isolator for the decoupling. The audio level for the sound card to 
radio circuit is adjustable with a small potentiometer and is adjusted 
so the ALC just blinks the first bar. The data mode is enabled so that I 
see an "r" with a bar over it as the mode.

All my radio gear uses 12 VDC and the 12 V side of the supply is 
isolated from the house ground. I have an 8 ft rod driven in the ground 
outside the radio room and all the antennas (coax shields) and -12 V are 
bonded to this ground.

Any help will be appreciated.

72,

Jim - W4BQP

-- 
Jim Campbell

When seconds count, the police
are just minutes away.