Bob -
Yes and no. There are jacks on the PS-7 (RCA) for VOX and ALC connections. If your L-4B still has
the two conductor VOX connector on it, you'll need to either make a two-pin connector or replace it
with the RCA jack conversion from John Kriner. If you have the two-pin connector then the only
caveat is that since it is NOT polarized you may have to reverse it. If the L-4B keys as soon as
you plug in the connector, (assuming the other (RCA) end is connected to the TR-7,) just reverse the
two-pin connector.
If you don't have the PS-7, both functions are available on the PS-7 Control connector on the back
of the TR-7. This is the 10 pin Cinch connector. Pin 8 is the VOX and Pin 9 is the ALC. Pin 10 is
the common ground.
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>
ROBERT SMITH wrote:
Will a Drake TR-7 radio work on a Drake L-4B,without any mods?
Thanks
Bob w0vu
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