[Drake] T4X question

[Chris Pedder]

Hi,

Have eventually located my TC-2 manual which I thought would be more 
likely to have this information than the T4X manual.

First of all the TC-2 required 0.25V drive at 14.0 to 18.0 MHz.

The modifications to the T4X are described on pp5-7 of the manual and 
involve drilling three 1/4 inch holes in the rear of the chassis. One 
pair is used to remove the screen volts from the PA and the third is 
used for the exciter output. The latter comes from the '20 meter PA 
Grid Circuit'. The manual implies that this mod has to be done for 
all T4 series transmitters.

Alas I have no means of scanning the manual, having given my scanner 
to a family member, but I'm sure there are copies at BAMA or somewhere similar.

Chris G3VBL


----- Original Message -----
From: <telegrapher at att.net>
To: <Drake at mailman.qth.net>
Sent: Friday, August 04, 2006 4:54 PM
Subject: [Drake] T4X question


 > It seems to me that on the T-4XB there were a pair of RCA jacks on the
 > back panel that may have been solder jumpered below the chassis or had
 > an RCA-RCA jumper on the back of the chassis.  The object was that by
 > removing this jumper you had low level drive to operate the TC-6 and
 > TC-2 units.  I don't see this on the T-4X but the question is, does
 > anyone know what the output power level might have been at this point?
 > I need less than .1 watts of drive and wondering if  this might be close.
 >
 > Thanks
 >
 > Larry
 > W0OGH
 >
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