[TenTec] 238 Tuner Dial cord

[Dr. Gerald N. Johnson]

On Tue, 2008-07-08 at 19:36 -1000, Ken Brown wrote:
> Hi all,
> 
> I recently received from Ten-Tec a new dial cord and elastic stretch 
> cord for my 238 tuner. An instruction sheet came with the parts, which 
> differs somewhat from the DIAL-STRING ROUTING DIAGRAM in the manual for 
> the 238.
> 
> The most significant difference is that the new instructions show a 
> "single pulley" at the upper right hand corner stand-off. This is a 
> great idea. I am sure the elastic cord will work much better running 
> around a pulley versus just being dragged around the stand-off.
> 
> The problem is that my 238 has not had one of these pulleys as long as I 
> have owned it, and the manual does not indicate that it was original 
> equipment. Ten-Tec did not send me a pulley. I did not ask for one when 
> I placed the order, since I didn't know there was such a pulley. It 
> seems like there ought to be one on the lower right stand-off too.
> 
> There are a few other differences on the instruction sheet. It shows 
> "brass stand-off" in a couple of places where it looks like aluminum on 
> my 238. The elastic cord gets tied to the SWR SET potentiometer shaft 
> instead of to the lower left hand standoff.
> 
> I wonder how many versions of the dial cord string routing there have 
> been over the years? I know they have abandoned that method altogether 
> in the newer tuners. And some people have made their own modifications 
> using a spring instead of the elastic cord.
> 
> I guess my 238 will not be back in service until another care package 
> comes from Ten-Tec.

Sometimes there are small pulleys in the radio control section of a good
hobby shop.
> 
> DE N6KB
> 
73, Jerry, K0CQ