[Boatanchors] t4x question

[Garey Barrell]

Larry -

Recall that the early AC-3 supply was designed for the TR-3.   There
was no provision on these AC-3s for controlling an external linear.
   The transceiver was first believed to be for mobile use and not
many used linear amps.  (Although a few did!)

The early "3" version had a small pigtail with RCA jack that came
out the back of the Jones connector, apparently after Drake had
inquiries about keying an external amp.  On later units, this
pigtail was used for ALC control.  Some units had two pigtails, and
I suspect those were "field modifications".

73, Garey - K4OAH

telegrapher at att.net wrote:

> I've got an AC-3 supply here and the only plug on it other than the AC
> plug is the 12 pin for power to the transmitter.  Course the previous
> owner might have taken it off, who knows.  I thought it had something
> like an RCA plug.  Then to that was almost 20 years ago and i can hardly
> remember what i had for lunch today.....
> 
> Merry Xmas to all and to all a good night!
> 
> Larry
> W0OGH
> 
> 
> W4AWM at aol.com wrote:
> 
>>Hi,
>>
>> I am away from the home QTH at trhe moment, but as I remember, there was one
>>of those 2 pin plugs on the companion AC-3 PS that was used to key the L-4B.
>>If you are using other than a Drake PS, you can pick up the keying circuit on
>>the male Jones pluc on the T-4X chassis.
>>
>>73 and happy Holidays,
>>
>>John,  W4AWM
>>