[ARC5] Hewlett Packard Signal Generator HP-606B - Removing screws

[D C *Mac* Macdonald]

Those set screws very well MAY be spline/Bristol screws. 
Allen wrenches will NEVER work on those.
 
* * * * * * * * * * * 
* 73 - Mac, K2GKK/5 * 
* k2gkk at hotmail.com * 
* (Since 30 Nov 53) * 
* Oklahoma City, OK * 
* USAF, Ret (61-81) * 
* * * * * * * * * * * 
 
 
 
 

 

> From: vk2bcu at operamail.com
> To: arc5 at mailman.qth.net
> Date: Thu, 1 Mar 2012 16:28:54 -0800
> Subject: [ARC5] Hewlett Packard Signal Generator HP-606B - Removing screws
> 
> Hello Group,
> I have a 1960's vintage signal generator I wish to use to calibrate my
> ARC-5 "command" radios.
> The model: HP-606B.
> 
> At the moment it's un-servicable or SNAFU.
> To get inside the RF cage I need a special tool (an allen key or hex
> key) on a long shaft.
> Normally this is supplied by HP, with the instrument, but alas ....
> 
> I am unable to find the correct size allan key.
> 1/8 is too big, and 3/32 is too small.
> 3 mm is too big and 2.5 mm is too small.
> Beyond that I WILL need the correct size on an extended shaft (may have
> to drill & silver solder a shorter key onto an extension).
> 
> Perhaps it's 2.54mm or 0.100 inches?
> Help! <- almost begging!
> 
> 73
> 
> -- 
> Leslie Smith
> vk2bcu at operamail.com