[Hammarlund] Comet Pro Questions

[Roy Morgan]

On Nov 17, 2012, at 11:19 PM, Joe Connor wrote:
>
> 2. Any idea where I can get a schematic or, better yet, a manual for  
> this particular model?

www.hammarlund.org/PDF/COMETPRO-4.pdf  Is l ikely to be close enough.

> 3. I have the AA, BB, CC and DD coils and understand what they are.  
> However, I also have EE coils (250-550m) and XX coils (8-16m). Any  
> idea what these are for?

Frequencies outside the range covered by the normal coils.
Here is a wavelength to frequency converter:
www.1728.org/freqwave.htm

250 to 550 M is 1.2 mc to 545 KC
8 to 16 M is 37.5 mc to 18.7 mc.

> 4. How many watts will this receiver put out?

The 2A5 output tube shown in the schematic from the above link is  
rated at 0.65 watts (in class A single ended audio service).  Any  
matching transformer you can find will work just fine.

>  5. Any tips for cleaning the cabinet's wrinkle finish?

Get some NON-abrasive Go-Jo hand cleaner.  Scrub into a small area  
with tooth brush or "hospital brush" or other stiff brush.  Wipe off  
with paper towels.  Repeat till no black comes out of the wrinkles.   
Wash with Windex and apply paste wax if you like.

> 6. Any other restoration tips? I replaced the 'lytics before I tried  
> the set. I plan to replace the paper caps and out-of-spec resistors  
> in the next few days.

Install a three wire grounded line cord.  Replace all paper caps. The  
thing dates from the early 1930's and they certainly are leaky by  
now.  Do an alignment.  Clean and lubricate the tuning capacitor  
contacts and bearings.

Roy

Roy Morgan
k1lky at earthlink.net
K1LKY Since 1958 - Keep 'em Glowing!