Hi Albert, yes, I had the same speaker cabinet with the AC supply 
in it.  Also had the DC supply and ran the rig from my mom's VW 
bug with a hussler antenna on the fender.  Ran CW as a novice 
from the car.  Pretty cramped setup with the rig between my feet 
on the floor.  Glad we never got in an accident when the rig was 
in the car.  I'd probably still be stuck in there! Later, I got a 
Drake SPR-4 receiver which was really terrific.  I regret having 
to sell all that stuff but I had to pay for stuff for our kid who 
was young and I wasn't very active then so couldn't rationalize 
keeping it back then.  Jim WA6EKS

 ----- Original Message -----
From: Albert Sanchez <[log in to unmask]
To: [log in to unmask]
Date sent: Fri, 24 May 2013 16:05:09 -0400
Subject: Re: Drake Tr-4

Hi Jim,
What a wonderful rig the TR-4 was; I had the matching remote 
VFO/speaker
cabinet into which you could slide the AC4 power supply.  Also 
had the rig
mobile in my dad's truck/camper.  I also had dots at the 5Khz 
marks.
Albert S., WA7FXB
----- Original Message -----
From: "Jim Gammon" <[log in to unmask]
To: <[log in to unmask]
Sent: Friday, May 24, 2013 2:36 PM
Subject: Drake Tr-4


 When I had my Drake Tr-4 I had a ham friend mark the bezel every
 5 KHZ with smaller dots.  Those Drake rigs had great linear
 tuning across the bands.  Pretty good for back in the 70's.  I
 also had an audible tuner that I still have, but it no longer
 functions.  That was hooked into a cheap Radio Shack SWR meter
 and I could tune for the highest tone out of the audio box.  Jim
 WA6EKS

 ----- Original Message -----
 From: Howard Kaufman <[log in to unmask]
 To: [log in to unmask]
 Date sent: Fri, 24 May 2013 06:44:18 -0500
 Subject: acessible radios

 All in the ear of the beholder.
 I started out with a johnson valiant.  I tuned the transmitter 
by
 pressing
 my ear to the metal case, and listening for the dip in hum.  I
 tuned the
 grid by listening to the click of the meter needle.  Later I
 counted the
 dial turns on the drake radios.  Since each turn was 25 khz, you
 could get
 with in 2 khz or so quite easilly.  I have wondered if a neon
 light coupled
 to a feed line could be read by an audible light probe.  How 
good
 would
 maximum brightness be?  Interesting experiment.  Then in the 
late
 80's I
 bought a triton 4 and found the speech box that tentec made for
 it.  I
 thought I had died and gone to heaven.
 I have an Omni D and still have that box.  That's a backup 
radio.
 We've come a long way.
 H T Kaufman MSW LCSW
 Adaptive Technology Instructor