Franco -
The problem is that the SIDETONE out of the T-4X series of transmitters
is High Impedance, and the 2-C does not have a Hi-Z input for it. So
you have to "step down" the impedance to speaker voice coil impedance
and connect it directly to the speaker. The AF output of the 2-C is
ALSO connected to the speaker. One side of the speaker voice coil
output from the 2-C IS already tied to ground, so all you're doing is
connecting both transformers in parallel to the speaker. Obviously you
have to connect the transformer lead to the _UNGROUNDED_ side of the
speaker voice coil. If you have the proper transformer, (most any
output transformer should work somewhat,) you should be able to connect
the sidetone output of the T-4XB through the transformer to a speaker
and hear the sidetone. If not, then there may be a problem in the T-4XB.
73, Garey - K4OAH
Glen Allen, VA
Drake 2-B, 4-B, C-Line& TR-4/C Service Supplement CDs
<www.k4oah.com>
iz oos wrote:
Hello Friends,
It could be a problem of language but I cannot quite understand "FIG.3
CONNECTING THE T-4XB TO A RECEIVER OTHER THAN THE R-4". In this figure
it is shown a 2-C with the speaker output connected to the speaker and
the antivox cable from the antivox sidetone output of the T-$XB to a
impedance audio transformer to the "Speaker Voice Coil"? What is the
"Speaker Voice Coil" with one terminal connected to ground? I did
connect the anti-vox cable to the audio transformer and a 4ohm speaker
but I heard no tone.
73
Franco IZ2OOS
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