OT: Struggling to find info - needing assistance

[Richard Post]

Mike,

Is it similar to the Graymark 515?  Basically a phono oscillator?

<http://www.smecc.org/graymark_transmiter.htm>


Rich KB8TAD


At 11:03 PM -0500 7/17/05, Mike Miller wrote:
>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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