[R-390] Z702 Adjustments

Rbethman rbethman at comcast.net
Mon May 8 14:31:53 EDT 2006


Barry,

I have NO slug tune inside Z-702 in MY Cosmos PTO either.

I just pulled the cover and inspected it carefully.

Haven't got to where you are YET.  Still restoring this old Blue Striper!

Bob - N0DGN

n4buq at knology.net wrote:

>In light of the recent discussions of PTO output, it was mentioned that 
>some PTOs have a slug-tuned T701 and others do not (case in point, the 
>Cosmos PTOs).
>
>For those of you that do have a slug-tuned T701, where is the adjustment 
>seen?  I have looked on the WEB for pictures of various PTOs and all I've 
>seen are the adjustment point for C706.  The Y2K manual also only shows the 
>single threaded shaft for C706 with no mention of locating T701 for 
>adjustment.  For Z702s with a slug-tuned T701, I expected to see an 
>additional hole for the slug but, so far, I've seen none.
>
>Is the slug-tuned T701 similar to the slug-tuned transformes in the IF deck 
>where the hole for the slug adjustment just wasn't included in the can?
>
>It was a busy weekend so I didn't get back to any more testing, but I still 
>plan to replace tubes and "sweep" the output can in hopes of finding what's 
>causing the output to be so low.  According to Rich, his experience with 
>all those Cosmos PTOs yielded much better results than what I'm seeing, but 
>he also stated that he's never seen any common failures such as bypass 
>caps, etc., so I'm still left wondering what could be wrong here.
>
>Thanks,
>
>Barry - N4BUQ
>  
>
-- 
                       Bob Bethman - NØDGN
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