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NCC-1 Connections for Remotely Powered Receive Antennas
If your special receive
antenna system requires any
voltage, even those greater
than +13.8 Vdc nominal,
then the
NCC-1
default
internal jumper setting for
HD4 is set to EXT. Refer to
Figure A-2
. This will allow
up to +30 Vdc @ 150 mA
maximum per antenna input
channel (300 mA combined
maximum).
Your alternative fused power
source of up to 30 Vdc would
be connected to the ANT
PWR jack on the rear of the
NCC-1
. TX mute connection
to the T/R CTRL will
interrupt this power feed. If
relays or pre-amplifiers are
used remotely, their switching
time for a receive / transmit
/receive sequence must be
faster than the transceiver.
The
DXE-RPA-1
Receive
Pre-Amplifier was
not
designed for remote operation
of a keyed power source.
Minimal losses on low band
receiving feedlines normally
allow for proper location of
the
RPA-1
on the receiver
input or the transceiver RX
Ant Input.
