[Milsurplus] Was: Strong Stomach Needed. Now ATD questions.

[mac]

On Jul 17, 2009, at 9:43 AM, John J Mccarty wrote:

> I working on an ATD/ARB combo and had a couple of questions if you  
> have the time.
>
> 1) How are you matching the antenna output to your antenna system?  
> If your using
> coax for the antenna feed line, how does it match up to the ATD. Is  
> an un-un
> needed or will a series cap be enough?

John,
I use a series cap.  Through cut-and-try found a single value that  
worked 160 thru 40M but don't remember the value.  More than 100pf but  
I mounted it internally so will have to remove some screws and get  
back to you.  Been a while since i"ve used the set.

>
> 2) Someone stole the taped inductor (L606) out of one of my  
> 3000-0950 "tuning
> units". Would it be possible to fabricate a new one with a plastic  
> form or are
> the internal temps too high at that point?

Set does not run particularly hot (as Meir also mentioned) so a  
plastic coil form would probably work OK.  However, I trust that you  
are aware, given the recent prolonged interchange on this list. of the  
moral implications of using non-original components in a classic  
military rig of
this kind :^).



Dennis D.  W7QHO
Glendale, CA