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than 15 Vdc and 100 mA to the TX EN or TX
OUT jacks.
TX EN and TX OUT should be connected to
the corresponding QSK loop IN and OUT
jacks on your amp. On a Ten-Tec QSK
amp, TX EN is connected to KEY OUT and
TX OUT is connected to KEY IN via shielded
cables (consult the operator's manual of
your non-Ten-Tec QSK amp for the proper
loop information).
To use the full break-in keying loop, it must
be enabled from the menu. Note: If the loop
is turned on, and no connections are made it
will prevent the OMNI-VII from transmitting.
See CONNECTING AN EXTERNAL
LINEAR AMPLIFIER in Section 5 for a
complete description on interfacing a linear
to the OMNI-VII.
Tip: TX EN can also act as a transmit inhibit
input if it is desirable to prevent OMNI-VII
from transmitting until other station
accessories have been switched. When the
loop is on, no RF will be transmitted until a
closure to ground is present at the TX EN
jack, whether from a keying loop or from
some other external source.
(38 & 39) SPARE
No connection.
(40) DC IN
This is the dc input connector. OMNI-VII
requires 23 amps at +13.8 Vdc nominal for
100 watts output power. The supply voltage
can range from +12.8 to +15.0 Vdc but
+13.8 Vdc is the optimum value. We
recommend using the included dc power
cable (P/N 86095). We have also included
spare connector pins (P/N 41020) and a
spare two-pin power connector shell (P/N
35165) for building your own cable. The
power supply plug will attach in only one
direction to the polarized two-pin dc
connector on the rear panel. Use no less
than #14 gauge (#12 recommended)
stranded wires for three-foot long
connections to accommodate the high
current demand during transmit. Use
heavier gauge wire for longer power supply
leads.
588 manual
Part #74409
Printed in USA
(41) DC OUT
This jack provides +13.8 Vdc output for
connection of accessory equipment. A
maximum of 500 mA current draw is
possible. The jack has voltage present only
when transceiver power is turned on.
(42) FUSE 25 A
OMNI-VII is equipped with a 25-ampere
blade-type automotive fuse. A replacement
has also been provided in the transceiver
packing kit.
(43) (GROUND TERMINAL)
The wingnut-equipped post is for connection
of station ground or counterpoise. See A
WORD ABOUT GROUNDING in Section 1.
(44) ETHERNET
The rear panel Ethernet jack is used for
remote control of the transceiver with the
One Plug graphical user interface software,
available for free download from our
website.
The radio must be placed into REMOTE
STATE to use the Ethernet interface. See
the description of RADIO STATE VS.
REMOTE STATE in Section 1 of this
manual.
(45) ANT 1
The ANT 1 connector is an SO-239 jack
used for connection of a coaxial fed
transceiver antenna, nominal impedance 50
ohms, for use on any band the OMNI-VII
covers. Antennas are selected using the
ANT front panel button. See the description
of (14) ANT in Section 2 of this manual.
(46) ANT 2
The ANT 2 connector is an SO-239 jack
used for connection of a coaxial fed
transceiver antenna, nominal impedance 50
ohms, for use on any band the OMNI-VII
covers. Antennas are selected using the
ANT front panel button. See the description
of (14) ANT in Section 2 of this manual.
(47) AUX RX
The AUX RX connector is an SO-239 jack
used for connection of a coaxial fed receive-
only antenna, nominal impedance 50 ohms.
This antenna can be used in transceiver
Second release – August 2007
18
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