[Hammarlund] IDing Hammarlund Super-Pro

[William A Kulze]

Yes, IIRC, I think my audio output xfmr is toast, but I seem to remember finding a suitable replacement at Hammond. It's been a while since I worked on it last. When I got married, I lost my work bench (kitchen table)!8^D Once I'm done fixing it up, we're moving into a new (old) house that will have plenty of room for just such a purpose. It'll be great!

Bill W2NVD

-----Original Message-----
From: Carl [mailto:km1h at jeremy.mv.com] 
Sent: Thursday, December 03, 2009 4:36 PM
To: William A Kulze; hammarlund at mailman.qth.net
Subject: Re: [Hammarlund] IDing Hammarlund Super-Pro

Very true about the 465 kc IF. Just remember that the SP-400 is 455, its 
easy to assume all the early Pros are the same.

The audio driver and output transformers are quite prone to destruction from 
leaky caps, especially if you wait for the cap to be noticable.

A word to the wise......

Carl
KM1H



Carl
KM1H


----- Original Message ----- 
From: "William A Kulze" <wak9 at cornell.edu>
To: <hammarlund at mailman.qth.net>
Sent: Thursday, December 03, 2009 2:43 PM
Subject: Re: [Hammarlund] IDing Hammarlund Super-Pro


> Hi Ron, glad to see you got some answers. How thick is the front panel? I 
> have a commercial model, same bands. I can't remember the details, but 
> some of the earlier ones had a thicker panel, 3/16", while the later ones 
> were 1/8". The one I have is thicker and has a wrinkle finish. I thought 
> it was a weird dark green. I removed it and washed it in the sink with 
> some mild dish soap. It's black! Cleaned up nice. I got it about 15 years 
> ago and it worked real good for quite a while, then the bathtub bypass 
> caps started going one at a time. One thing to keep in mind when you do an 
> alignment, the IF XTAL is 465kHz, not 455kHz. Tune your IF to 465. What a 
> nice sounding radio, I can't wait to get it back together. The 
> continuously variable bandwidth is nice. Would have been nice if it was a 
> model that included MW BCST, but still real good. Enjoy!
>
> Bill W2NVD
>
>
> -----Original Message-----
> From: hammarlund-bounces at mailman.qth.net 
> [mailto:hammarlund-bounces at mailman.qth.net] On Behalf Of TVComlGuy at aol.com
> Sent: Wednesday, December 02, 2009 6:06 PM
> To: hammarlund at mailman.qth.net; boatanchors at mailman.qth.net
> Subject: [Hammarlund] IDing Hammarlund Super-Pro
>
>
> Good afternoon to the group,
>
> I have a military Super-Pro receiver that I would like some help
> identifying.  It has 16 tubes and the frequencies it covers are;
>
> 100-200 kc
> 200-400 kc
> 2.5-5.0  mc
> 5.0-10.0 mc
> 10-20 mc
>
> Also, are the bathtub capacitors along the side paper and should be
> changed?
>
> 73//Ron, KB0WAR
>
>
> "The TV business is a cruel and shallow money trench,
> a long  plastic hallway where thieves and pimps run free,
> and good men die like  dogs." Hunter Thompson
>
> "There's also a negative side." Ron Hinze
>
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