[GreenKeys] ST-8000 Mark Space Baud Rate Tuning

[Herb Graeber]

Thanks for the info Dino.  Let me check the cable and if
it is fine, I will have a go at the encoder.  The tone pairs
in the memory locations work fine.  In fact, the ST-8000
works better than any TU that I have or have used.  If it
is the encoder and it can't be fixed, I wonder if a person
can find one of those animals?  However, I can always
set the tone pairs and baud rate via remote control.
Thanks...Herb


----- Original Message ----- 
From: "Dino Papas" <kl0s at cox.net>
To: <greenkeys at mailman.qth.net>
Cc: "Herb Graeber" <hhg at suddenlink.net>
Sent: Sunday, February 13, 2011 11:05 AM
Subject: Re: [GreenKeys] ST-8000 Mark Space Baud Rate Tuning


Herb - I had an encoder go bad on one of my ST-8K's a few years 
back....someone had opened it up previous to me and the cover was off.  I 
resoldered all the PCB connections and the encoder came back to life. 
Hopefully it's not a totally bad unit as replacing it would be very pricey. 
Before I did any surgery though you may just want to check the cable that 
connects the encoder on the front panel to the PCB....hopefully a little 
DeOxit might fix the problem.

Can you still choose the tone pairs that are in memory?  An associated 
problem with the unit is the NVRAM chip that holds the memories runs out of 
battery life after about 10 years.  If that's your problem as well let me 
know and I'll send you some info on a simple fix for that issue.

Dino KL0S

On Feb132011, at 1158 AM, Herb Graeber wrote:

> I bought a used ST-8000 about two years ago with every
> tone pair and baud rate stored in the 8 memory locations.
> I've used it for all that time and never touched the main
> tuning knob.  The other day I decided to plug in a mark,
> space and baud rate that I did not have in memory.  To
> my surprise, the main tuning knob changes nothing!
> I've got the VAR-RX/TX in the VAR position.  Nothing
> happens when I turn the main tuning knob.  I've even
> resorted to reading the manual.  Am I overlooking something
> or does this thing need to go back to our friends at HAL?
> Any ideas?
>
> Thanks...Herb K5HG