[Premium-Rx] STC STR 8212 HF Receiver

[john black]

Hi, Dave.  I hauled out the radio this morning and it fired right up.  Of
course, then I had to make the mistake of opening it up to find some
numbers, and I've spent the rest of the morning re-seating boards and
connectors trying to make it work again.  It's working now, so hopefully I
can button it up soon.

The date code is gone.  The only numbers I can find on the modules seem to
be in the 105-106 range.  Here's all the numbers off the IC's:

DAC Sequencer IC14: Sys5 14-2-01 #6D7780


On the DSP boards:

DSP2A- 1.9
DSP2B- 1v4 ( guess that's the same as 1.4)

DSP1A-1.6
DSP1B-1.6

Controller Board:

IC7: 3.03 fH
IC6: 3.03 fL

How does that compare?

It just quit again.  Seems to be centered around re-seating the ADC module.

John KB5AG

On Tue, Dec 29, 2015 at 6:38 PM, David Twyver <david at twyver.com> wrote:

> Hello List -
>
> I am a new member with a small collection of 60s, 70s, and 80s Drake,
> Collins, Hallicrafters and Kenwood vacuum tube and hybrid Ham equipment.
>
> I also have an STC STR 8212 HF DSP receiver that had worked well for over
> 20 years but that now needs repair. I have located the service manual
> online (thanks to this list) and two parts units in Australia, so have a
> good chance of success.
>
> Although I had a minor involvement in the production of the 8212 in the
> early 90s, I would be very interested in any details about this receiver
> that other list members, especially in the UK and Australia, might be able
> to provide, such as:
>
> How many were produced? I have serial numbers 121, 133 and 140 but do not
> know whether the numbers began at 1 or 100.
>
> Does anyone else on this list (other than G8MOB) have an 8212 or know of
> any more out there?
>
> Is there any chance of finding the DSP and Motorola 68000 Controller
> firmware?
>
> I have seen reference to a VHF/UHF version. Does anyone have any
> information about that?
>
> Thanks for any help,
>
> 73
>
> Dave Twyver
> K7DAT
>
>
>
>
>
>
>
>
> ______________________________________________________________
> Premium-Rx mailing list
> Home: http://mailman.qth.net/mailman/listinfo/premium-rx
> Help Page: http://mailman.qth.net/mmfaq.htm
> Post: mailto:Premium-Rx at mailman.qth.net
> Help Contact eMail:  paul at 8zo.com
> Home Page:  http://www.premium-rx.org/
>