[Premium-Rx] STC STR 8212 HF Receiver

[john black]

Hi, Dave.  I just joined the list as well, and was surprised to see your
post.  I have an STR8212; I've had it for a few years now and it's been a
love/hate relationship.  I had lots of trouble with it initially, and it
finally died.  I got it out about a year ago and pretty much rebuilt the
power supply.  It's not currently in use, but the last few times I hauled
it out, it was working fine.  I only know of one other 8212 owner, and that
is probably the gentleman you referenced, G8MOB.

The only complaint I have (aside from crossing my fingers every time it
does a POST) is that the slow AGC setting doesn't work properly.  It
attacks just fine and holds the gain properly, but when the station
disappears, the gain slowly goes up way too far, and it's all distortion.
The MID and FAST settings don't do that, but they're not as comfortable to
listen to SSB with.

I don't know what the serial no. of mine is; I seem to recall that it may
be on the boards, but it's not on the chassis.  Mine came from a seller in
the Netherlands, and has a sticker inside from a German ham who evidently
messed with it once.

When it's working, it's probably the finest receiver I have ever used.

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
>
>
>
>
>
>
>
>
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