Hi Evan -
Simple!! The TR-3 was designed for mobile use, no amplifiers and minimum number of connectors to
undo. This is the reason for the speaker connector coming out of the back of the power connector.
The AC-3 had no VOX or ALC connections either.
Then, here comes the Twins. My first T-4X came with an AC-3, so no provision for VOX or ALC. I,
and no doubt many others, merely rewired the pigtail coming out of the back of the power connector
from the speaker leads (no longer needed, since the receiver had a speaker jack) to the VOX relay
connector.
Then the AC-4 came along, and to keep everything compatible (and avoid multiple pigtails coming out
of the back of the power connector!) the appropriate connectors were put on the AC-4.
Simple! :-)
73, Garey - K4OAH
Glen Allen, VA
Drake 2-B, 2-C/2-NT, 4-A, 4-B, C-Line
and TR-4/C Service Supplement CDs
<www.k4oah.com>
K9sqg wrote:
Curious as to why the VOX and ALC come from the power supply rather than the
rig itself. I always
thought that was a strange arrangement. Fortunately, I have a stereo cable
with color coded
"channels" so it makes connection simple but would be simpler to run shorter
leads directly from
the rig to the linear. Drake always seemed to have good reasons for what they
did but this one
has me puzzled, hi hi...
73,
Evan, K9SQG
-----Original Message-----
From: Garey Barrell <[email protected]>
To: Ron <[email protected]>
Cc: drakelist <[email protected]>
Sent: Sat, Jan 28, 2012 9:37 am
Subject: Re: [Drakelist] TR7 ALC access when not using PS7
Ron -
Oh, and the VOX relay contact is right next to it on Pin 8. A REAL relay
contact too, none of this
wimpy reed relay stuff..... :-)
73, Garey - K4OAH
Glen Allen, VA
Drake 2-B, 2-C/2-NT, 4-A, 4-B, C-Line
and TR-4/C Service Supplement CDs
<www.k4oah.com <http://www.k4oah.com>>
Ron wrote:
> I am sure that are at least a few folks who are using the TR7 with a power
supply other than the PS7. And I am thinking of those some are using linears.
>
> So where and how did you gain access to the ALC line of the TR7?
>
> TNX es 73,
> Ron WD8SBB
>
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