Struggling to find info - needing assistance

[Brian Carling]

Well I never!
Lab Volt still around eh? We used a LOAD Of their equipment when I was 
teaching high school electronics
back in the 1970s.  I thought they were long gone!

Back then they had kits, power supplies, components, etc. etc.

Dave Edwards wrote:

> Mike... I have several Graymark unbuilt kits. A bunch of 510's and a 
> couple of 506C's
> They were kits for educational purposes. The manuals always had a lot 
> of spooky mumbo-jumbo about how things work, and why oscillators 
> oscillate (or not). Way more information than Heathkit needed to provide.
> I bought mine years ago...when tube stuff was junk, before it became 
> collectors items. I thought if I ever got married and had kids..We'd 
> build them together. Well, my first is now 7 years old, so it won't be 
> long now!!!
> Anyway, my assembly manuals say that Graymark was a division of 
> Lab-Volt Ltd.
> Graymark was in Los Angeles, and Lab-Volt was a Canadian firm. They 
> seem to still be around, and have a web 
> page.....http://www.labvolt.ca/i1/i11/ia11.html
> You might give them a try. They still have Graymark downloadable 
> documents....just a couple decades newer than our tube-type kits.
> Good Luck!!
> ....Dave
> ----- Original Message ----- From: "Mike Miller" <ka9rqw at MCHSI.COM>
> To: <HEATH at LISTSERV.TEMPE.GOV>
> Sent: Monday, July 18, 2005 12:03 AM
> Subject: OT: Struggling to find info - needing assistance
>
>
>> Hey all,
>>    Having problems, and can't think of a more knowledgeable place to 
>> turn for information-
>>
>>    In cleaning out my garage, I came across an old (and not yet 
>> completed) kit I can't seem to find the instructions for or the tube 
>> listing for. It's a Graymark 505b transmitter, still in the original 
>> (though very shopworn) box, with some of the original parts still 
>> packaged inside. It's partially assembled, and appears as though 
>> someone has tried, although unsuccessfully, to apply power to it.  
>> I've considered restoring it and completing it, since the board's not 
>> going to be in pristine condition anyway, most likely, due to the 
>> damage to it from the power applied (there may likely have been a 
>> wiring error that caused it to arc when power was applied, I can't 
>> tell without a schematic, but that would be my guess).
>>
>>    I'm looking for any information I can find for this 
>> unit...schematics, parts list (though, obviously, I could generate 
>> that from a schematic), assembly instructions, etc.  Any help or 
>> assistance would be greatly appreciated.  I've already checked my 
>> usuals (BAMA, eserviceinfo, mods.dk, and so forth) already, with no 
>> luck, so those are exhausted.  I've also googled for what I would 
>> consider the obvious (graymark, graymark 505, graymark 505b, graymark 
>> transmitter), with no luck either.  Anyone got any other suggestions?
>>
>> Apologies for directions away from the green.  Thanks!!
>>
>>       --Mike, KA9RQW
>>
>>
>> -- 
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>
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Products bought, sold or traded here is the responsibility of the
parties involved.  This list and the City of Tempe are not responsible
for losses or misrepresentations of any kind.  Buyer beware!

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This list is a public service of the City of Tempe, Arizona
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