[Hallicrafters] Re: SX-73 dial lock and stuff

[Tom Smith]

Oh, sorry for the extra bandwidth but I'm also looking for 
a main tuning lock. I can make one but I would like to 
obtain a original if there is a parts unit out there that 
has the lock.

Thanks again,

Tom  N5AMA 

On Wed, 28 May 2003 13:18:25 -0500
  "Tom Smith" <tsmith at hal-pc.org> wrote:
>I'm restoring a SX-73/R-274 and have a few minor 
>problems. The military manual that I have gives no detail 
>information on the mail tuning drive mechanism. My 
>receiver main tuning coupler has a pair of right angle 
>plates on the coupling from the reduction gear set to the 
>main tuning capacitors. In one direction the coupling is 
>direct contact (with no give) but in the other direction, 
>a pair of small springs pull the following plate and 
>there is substantial error because of spring stretch. I 
>have relubricated the main tuning caps as per manual 
>instructions but any drag causes the springs to stretch 
>and eventually catch up, but not immediately. It seems to 
>me that a direct connection would be necessary in both 
>directions to reduce dial readout error.
>HELP!
>What am I missing?
>
>Tom  N5AMA