[Boatanchors] Unusual SP-200 Super Pro???

[Richard Knoppow]

----- Original Message ----- 
From: "David Hollander" <n7rk at cox.net>
To: "BOATANCHORS" <boatanchors at mailman.qth.net>; 
<Boatanchors at puck.nether.net>; "Old Tube Radios" 
<boatanchors at theporch.com>; "Discussion of AM Radio" 
<AMRadio at mailman.qth.net>
Sent: Monday, February 20, 2012 10:18 AM
Subject: [Boatanchors] Unusual SP-200 Super Pro???


> This Super Pro radio followed me home while cleaning out a 
> shipping
> container.
>
> Is this Super Pro anything unusual or did someone paint 
> the dial windows
> blue and replace the knobs with more modern knobs?
>
> Sadly the radio has a lot of rust. I do have the cover 
> which attaches to
> the front panel but I removed it for the photos
>
> Here are three photos.
>
> http://www.arizonatubesupply.com/n7rk.com/radiostuff9/superpro.jpg
> http://www.arizonatubesupply.com/n7rk.com/radiostuff9/superpro2.jpg
> http://www.arizonatubesupply.com/n7rk.com/radiostuff9/superpro3.jpg
>
> Tnx and 73,
>
> Dave N7RK
>
      Its a military receiver, the dial escutcheons have 
been repainted and the knobs are a much later generic type. 
Note that the band switch knob is gone, the skirt of the 
original has the band designations on it. There are plenty 
of photos of the original receiver on the web.
      The military receivers had mostly black panels, either 
smooth or crinkle depending on who built them, but some were 
gray. The four holes above the audio gain control were for a 
label, found on military receivers, the domestic variety had 
the Hammarlund name engraved on the panel.
     I saw a 40mhz version at a local swap meet on Sunday 
but passed it up because it had been very heavily modified: 
original audio amp gone and a power supply and single-ended 
amp installed in its place.  Maybe good for parts. The only 
worth while mod is to add a voltage regulator to the local 
oscillator, easily done and fits under the chassis. Keeps 
the frequency from changing with RF gain.


--
Richard Knoppow
Los Angeles
WB6KBL
dickburk at ix.netcom.com