[Hammarlund] Early super pros

[Bob Young]

Roy,

I think the early series had all three versions: LX. X, and SX, including 
the 100's, although I'm not sure about the SP-400s, but I know there was a 
high frequency version which skipped the BCB, I have one, it's called an 
SP-400SX, the BCB version was a SP-400X which I also have and the low 
frequency versions were LX, if they made a 400LX although I've never seen 
nor heard of one. The SP-200, 210s had the three versions and I think the 
only difference between a 200 and a 210 was the speaker that came with it, 
same radio although I'll have to look that up to be certain.
I'm almost positive all were single conversion superhets. I'll dig out my 
literature on them, I have a lot of manuals on them, it'll have to be Friday 
though.

Bob Young
Millbury, Ma
KB1OKL

>From: Roy Morgan <roy.morgan at nist.gov>
>To: hammarlund at mailman.qth.net
>Subject: Re: [Hammarlund] Early super pros
>Date: Wed, 28 Feb 2007 15:01:54 -0500
>
>At 02:34 PM 2/28/2007, Bob Young wrote:
>>I have a BC-779-B which has 5 bands: 100-200, 200-400, 2.5-5.0, 5.0- 10.0, 
>>and 10.0-20.0. I think that is standard for these.
>
>Bob and others,
>
>Yes, it seems that the above frequency bands were standard for the BC-779A 
>and BC-779B.  I have parts of a manual for those radios and that is what it 
>says.
>
>I am left with a couple of questions:
>
>1) Did the early Super Pro (SP-1xx, -2xx, and 4xx) appear in a low 
>frequency only version?  If so was it a TRF design?
>
>2) Does anyone know of conversion articles that tell about modifying one or 
>more bands for changed frequencies?  I ran into one BC-779 in which this 
>had apparently been done.
>
>I just had a peek at the SP-600 VLF manual and found that:
>- It is a super het design, (not a TRF as I thought.)
>- it covers from 10 kc to 540 kc in 6 bands
>- crystal controlled local oscillator is provided, as in the normal 
>SP-600-JX
>- the normal IF is 705 KC
>- There's a mixer to produce 455 kc IF output using a crystal oscillator at 
>1160 kc.
>
>
>Roy
>
>
>
>- Roy Morgan, K1LKY since 1959 - Keep 'em Glowing
>13033 Downey Mill Road, Lovettsville, VA 20180
>Phone 540-822-5911   Cell 301-928-7794
>Work: Voice: 301-975-3254,  Fax: 301-975-6097
>roy.morgan at nist.gov --
>
>
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