I thought that the question would have been answered by now - The knob on
the lower left of the TR-4 is an on switch and volume control.
If that is not changing the volume, then you have an "issue."
Kris
Merschrod
123 Warren Road
Ithaca, NY 14850
www.merschrod.net
----- Original Message -----
From: "Bry Carling" <[email protected]>
To: <[email protected]>
Sent: Friday, November 20, 2009 8:55 AM
Subject: Re: [Drakelist] Mystery Modification to Drake TR-4
Ken - is it next to the meter? Or on the bottom of the cabinet?
I see nothing like that on the front panel of a TR4...
It's been a long time. Is it a trimpot that you access through a hole
on the bottom, or is it a black plastic shaft protruding through?
Could it be VOX sensitivity perhaps?
Here's a picture of the underside:
http://www.radiophile.com/tr4under.jpg
Help us identify where you are seeing this control please....
More views:
http://www.wb4hfn.com/DRAKE/DrakeArticles/DrakeRefurbishing/Refurbishi
ng-01.htm
Recently became a new Drake TR-4 owner via eBay. Got lucky and the radio
appears to be in
pretty good shape. Purchased a Turner +3 mic to go with it and fixing to
go through the radio
cleaning switches, pots, relays, etc to try and get her in top shape. Got
a fan to do a mod with
that on the finals. First lesson... Mic plug is not a ¼" plug... Ha! Ha!So
muddled through that
one.
Here is my question.... When looking at the radio from the front, on the
left side, towards the
bottom of the cabinet, there is a pot with a knob, that is adjustable and
has a off (I assume)
position. It is labeled, by an owner "Max" and "Min". In receive, it
appears to have no effect.
I haven´t been able to place the unit in transmit yet to see if it has any
effect there.
I know the info here is sparse.... But I figured some of you guys that
have forgotten more about
these radios than I will ever know may have a clue as to what this mod
is.... If not, when I take
her apart I´ll try and trace it down and see where it goes....
Geez, this radio sure sounds good.....
Thanks in advance for any help....
Ken
KB4MUV
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