[Boatanchors] RME 69 Crystal Filter and Cc/C adjust

[Glen Zook]

The supposed reason for there being no labeling on the front panel is because RME believed that any operator "worth their salt" didn't need labels to tell which control did what!
 
Glen, K9STH


Website:  http://k9sth.com


________________________________
 From: Al Klase <ark at ar88.net>
To: BOATANCHORS at MAILMAN.QTH.NET 
Sent: Sunday, April 14, 2013 12:14 PM
Subject: Re: [Boatanchors] RME 69 Crystal Filter and Cc/C adjust
 

Hi Bill,

I have my 69 on the bench, and it appears my restoration and alignment 
efforts of the late '90 have held up.

The positions of the Crystal Filter Switch (B) (upper right corner) are, 
left to right, OUT - SERIES - PARALLEL

The Crystal Selectivity (E) variable capacitor, CH, is just below the 
switch.

I'm blessed with an original copy of the documentation, and the switch 
connections are clear, unlike all the third-order scans on the web..

It's a single-pole three position switch, with the common terminal 
connected to the grid of the 6D6.
In the left-hand position, it shorts out the crystal for full frequency 
response.
In the middle position it does nothing.  This allows "normanl" crystal 
filter action.
In the right-hand position it shorts out the "phasing capacitor" CI, the 
trimmer inside the filter can.

Sandy's right, your going to need a crib sheet for the unmarked front panel.

I strongly suggest you replace ALL the paper caps before you attempt 
alignment.  DON'T EVEN TRY TO TUNE JUNK!

I'll try to get this stuff posted to my website soon. 
http://www.skywaves.ar88.net/commrx/RME/RME.html