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Transmit Safety Test:
After making all of the connections and prior to transmitting through the NCC-2 for the first time:
Turn the NCC-2
POWER On
. The Power LED should change from Yellow to Green.
Toggle the RTR switch in the center
Norm
position. The
RTR
should change from Red to Blue. If not -
STOP
- Re-check all connections. In receive mode (
Norm
), LED must be Blue to receive properly.
On your transceiver, adjust the Transmit RF level to Zero output and Mic Gain to Zero.
With your transceiver in SSB mode, key the microphone PTT. The NCC-2
RTR
LED
MUST
change from
Blue to Red. If not -
STOP
- The keying cable is either not connected or has a defective center conductor
and must be replaced.
When the
RTR
LED changes from Blue to Red when the transceiver PTT is keyed, then all is ready for
normal NCC-2 operation. The RF Transmit level and Mic Gain can now be turned up to the normal
operating levels.
KEYING LINE CONNECTION WARNING:
MAKE ABSOLUTELY CERTAIN that the KEYING LINE from the
TRANSCEIVER is connected ONLY to the NCC-2 RADIO PTT connector. The
keying line to the amplifier must be connected ONLY to ACC PTT “pass through”.
Do Not reverse the RADIO PTT and ACC PTT keying line connectors.
These connections are NOT interchangeable.
When the NCC-2 RADIO connector is used to carry transmitted RF, if these keying
connectors are accidently reversed, PERMANENT INTERNAL DAMAGE will
occur to the NCC-2 and potentially to other receive antenna devices.
INTERNAL DAMAGE TO THE NCC-2 DUE TO REVERSAL OF KEYING LINES
IS NOT COVERED UNDER WARRANTY.
Important:
When using the NCC-2, unexpected relay chattering sounds and flickering of the
RTR Blue/Red LED during transmission is an indication of a failure of the ground
on transmit signal. Cease operations immediately and check the keying cable
center conductor and the transceiver amplifier keying settings and connection.
Transceiver ground on transmit on the center conductor AND a transceiver
chassis-grounded shield on the keying cable connected to RADIO PTT connector
of the NCC-2 are required for proper RTR relay operation.
©DX Engineering 2018
DX Engineering
1200 Southeast Ave. - Tallmadge, OH 44278 USA
Phone: (800) 777-0703 ∙ Tech Support and International: (330) 572-3200
