Yaesu FT-1000MP Operating Manual page 69

Operation
Linear Amp ifier Operation & nterconnections
The FT-1000MP can be used with the optional
Yaesu FL-7000 which provides automatic band
switching via digital band data output from the
BAND DATA
jack on the rear panel of the trans-
ceiver. Most other amplifiers can be adapted to
operate with the FT-1000MP; however, the main
points to be concerned with are the switching
requirements of the amplifier, and if QSK (full
break-in) operation is desired. The linear amplifier
Tx/Rx switching capability of the FT-1000MP is
described in the table below.
Operation with QSK Amplifiers
Connect the RF output from the transceiver
ANT jack (A or B) to the RF input jack of the linear.
Connect the ALC output from the linear to the
EXT
ALC
jack on the rear of the transceiver. After mak-
ing the RF and TdRx switching connections de-
scribed below, you may need to adjust the ALC
output level of the linear so that it is not overdriven
by the FT-1000MP. Your linear's manual should
describe how to do this.
If using an FL-7000, connect optional cable
C T - I I
(P/N
D400019) from the transceiver
BAND
DATA
jack to the amplifier
A c c a
jack. This pro-
vides automatic band selection for the linear, as
well as QSK TdRx switching control. If using
another manufacturer's QSK linear, and if it can
be switched with less than 100 mA of DC voltage
below 15 V, you can connect the the Tx/Rx switch-
ing line for the linear to pin 2 of the
BAND DATA
jack, and the linear's exciter-enable output to pin
8 of the
BAND DATA
jack. This line must be held to
ground to enable transmission after the linear is
ready for excitation from the FT-1000MP. If your
QSK linear requires more than 180 mA or uses
more than 15 V for T/R relay switching, you will
have to provide a suitable external interface tran-
sistor, controlled by pin 2.
CT-11
PIN
~ 4 0 0 0 1 9 /
s u p p l i e d wlFL-7000
PIN T9100980
supplied wlFL-7000
QSK Linear Amplifier Interconnections
page
67