[Premium-Rx] Fwd: Rockwell HF-8050

[paul at 8zo.com]

From: Walter Salmaniw <canswl at gmail.com>
Date: August 21, 2011 1:18:46 PM CDT
To: Terry <terryszabo at cox.net>, premium-rx at mailman.qth.net
Subject: Re: [Premium-Rx] Rockwell HF-2050


Terry, this indeed is a very fascinating HF-2050.  It is unlike any I've ever come across.  Instead of the usual serial numbers, it is listed as "E4".  I suspect that this is one of a very small batch.  Also, instead of the usual Type number "HF-2050", this one as added "I-Q output".  From the photo, it has the preselector board (which my last 2050 had, and is rare in itself).  The name plate is not Canadian either, so I wonder whether this was built in Cedar Rapids, instead of Toronto.  I used to have a disk with all the NATO stock numbers.  It would be interesting to look this one up.  May I ask the origin of your receiver.  ie, how you obtained it?  It is mysterious!
........Walt
PS:  Unfortunately, I no longer own any 2050s.

On Sun, Aug 21, 2011 at 8:00 AM, Terry <terryszabo at cox.net> wrote:
Good morning Walter--Hope you are well and enjoying the beautiful providence of B.C. Wish I was there--one day I hope. Anyway I am sending a pic of the plate on the back of my radio and maybe you can shed some light on it. I would like to know as much as possible about it. I emailed Clemmens Ostgarrd and he said you might have a better idea. So here it is. I look forward to hearing from you.
73--Terry N4SuB 
 
 

 

Life is Good
-------Original Message-------
 
From: Walter Salmaniw
Date: 8/16/2011 2:21:16 AM
To: Charles P. Steinmetz;  premium-rx at mailman.qth.net
Subject: Re: [Premium-Rx] Rockwell HF-2050
 
I've owned at least 8 2050s over the years, and have seen many times that
number.  Never have seen any with ISB, and a few rare ones with the
Preselector board installed.  Most don't.  Most have only 30 memories, while
a few late models have 100......Walt Salmaniw, Victoria, BC
 
On Tue, Aug 16, 2011 at 4:36 AM, Charles P. Steinmetz <
charles_steinmetz at lavabit.com> wrote:
 
> Terry wrote:
>
> >I just acquired a beautiful Rockwell Collins  HF-2050 (serial #E4-is
> >this right?)
>
> To my knowledge, HF-2050 serial numbers are all in the form yy-xxxx,
> where "yy" is the last two digits of the year of production, such as
> 86, and "xxxx" is a four-digit serial number in that year's production.
>
> >what do I have to do to get my headphones to work and cut out the speaker?
>
> The 2050 does not have internal switching on the headphone jack.  You
> need to do that externally.
>
> >Also not sure if I have ISB.
>
> I was told by an engineer who worked on the project that there are no
> 2050s with ISB, because the contract was cancelled before any ISB
> units were produced.  I have also heard claims from owners who
> believe their radios have ISB, but so far nobody has been able to
> show me one that has the ISB circuitry.  (I have, however, seen units
> that had been kludged by owners or former owners to supply Channel A
> audio to both the Channel A and Channel B audio amplifiers in ISB
> mode.)  So, I do not know for certain if there are any 2050s in
> captivity with ISB, but I'm inclined to believe the engineer I spoke with.
>
> Best regards,
>
> Charles
>
>