[R-390] The infamous squelch non-option

[Roy Morgan]

At 02:00 PM 2/2/2006, Tim  Shoppa wrote:

>The blank plate covers the mounting holes for a tube socket and a relay, 
>right?

Right.

>What other componentry had to be added?

Not a lot.  The relay is a plate load relay of some 10 Kohms DC resistance, 
I think, and operates in the plate circuit of a 12AU7 or the like.

The Mode switch is likely capable of that function. You will find that it's 
stop is set one from the end. You move the stop and add a panel label or 
plate and that's it on that end.  The harness contains all the wires needed.

>I see the non-terminated wiring
>harness near that spot, anyone have a schematic diagram of what might go 
>there?

See the R-390/URR manual. That has it as standard equipment.

>I probably will try to rig up some sort of squelch system, and probably 
>outside
>the various receivers.

The AGC or Diode Load terminals on the R-390 would be useful.

Roy


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