[HBR] Re: HBR Digest, Vol 55, Issue 9

[match at ece.utah.edu]

On 22 Sep 2008 at 4:02, Pete wrote:

> I would replace the fiber rods with brass welding rod and use a rack
> and pinion mechanism
> to move the coupling up and down.

That solves half the problem. The other half is that the wires on the top coil 
of the ARC-5 transformers will break after being moved a dozen times or so. 
If you want to persue this route, you'll have to replace the leads inside the 
transformers with some tinsel leads that will survive the frequent movement. 

Since the upper coils will be firmly anchored by your rack-and-pinion 
assembies, I'm not sure you'll need to replace the rods with brass. I think the 
fiber rods would survive if you remove the friction dogs that hold them in 
place.

Marvin
KA7TPH