[Milsurplus] CRC-7

[John J Mccarty]

Hello Ben, George and All;


  I found the "orignal" conversion article in April 1958 CQ. It was done up in
the Surplus column by Ken Grayson, W2HDM.

 Good news: It does not call for a sharp hacksaw.

 Bad news: It does suggest use of a blow tourch or big soldering iron to get
into the sealed case. Then it suggests drilling holes in the case to allow for
adjustments.


73



John n9hrt

On 1/7/2011 10:51 AM, Military1944 at aol.com wrote:
>  
> Ben:
> The CRC-7 was indeed Korean war vintage.  And, I recall  seeing a ham 
> conversion article back in those days, but I have no idea in which  publication 
> it appeared.  Actually I found it in Vol. III of the Surplus  Conversion 
> Manual series.  Warning: The article starts with: "First, you  need a sharp 
> hacksaw...." But it does include a clear schematic.
> Good  luck!
> 73,
> George W5VPQ
> 
> 
> 
> ------------------------------------------
>  
> Thanks George. I have the surplus conversion manual as you  say. 
>  
> I dont' know how they joined to top part of the tube to the  middle, can't 
> think it was welded, maybe soldered with a special tool. 
>  
> Anyway, after cleaning I applied power to mine and amazingly  it still 
> works on rx and tx. Not bad after 60 year say. 
>  
> I don't think I'll try a 2Mtr mod, getting at the xtal looks  just too 
> difficult. I'll keep it as a working example, hi. 
>  
> cheers, Ben G4BXD.
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