Specifications; Parameters - Acom 03AT Operating Manual

DAMAGE RISK
+27V too Low
RF Power too High
Stop RF ...
Temperature too high
Timeout Expired
Unstable RF Power
No user-made repair is foreseen other than fuses replacement and eventually cable repair. In case of necessity
please ask the service of your dealer or the producer directly for a competent help – see S.1-2.

6. SPECIFICATIONS

6-1. PARAMETERS

a) Frequency coverage: 1.8 - 16MHz continuously; extensions and/or changes on request.
b) Maximum RF input power, PEP or CW, RTTY, FM, digital etc (no mode limit), 100% duty cycle:
at antenna SWR up to 3:1 - 2500W;
-
up to 5:1 - 1600W;
up to 10:1 - 1000W;
up to 20:1 - 500W;
up to 50:1 - 200W;
above 50:1 - 100W.
c) Efficiency:
at antenna SWR up to 3:1 - 97%;
-
up to 5:1 - 95%;
up to 10:1 - 92%;
up to 20:1 - 85%;
up to 50:1 - 60%.
Reduce the tuning power below 100W. Prior to start tuning be
sure the amplifier is bypassed (STBY). If the asterisk (*) doesn't
appear anymore when you apply tuning power, check the fuses
F1 & F2 on the "RF Sensor" PCB in the remote unit (see S.5-2,c).
Check the line AC voltage and compare it with the nominal
(see S.2-2). Check the power supply cable between the RCU and
the remote unit. Check if the contacts of the connector "24VAC/3A"
on the RCU rear panel are clean and if it is tight. Check if all four
wires are properly tightened in the terminals J1 & J2 (see S.2-3).
Reduce the tuning power below 100W. Before to start tuning be
sure the amplifier is bypassed (STBY).
Always stop transmitting and bypass the amplifier BEFORE
tuning with the AUTO TUNE button. If you use an
ACOM2000A amplifier, connect the serial control cable from
RCU rear panel "COM2" to the amplifier's rear panel connector
"RS232 INTERFACE" – the amplifier will automatically go to
STBY (see S.2-4,f).
Reduce the power fed to the AATU, stop transmitting or switch OFF
the AATU until the remote unit will get cool.
Do not delay applying RF tuning power for more than 20s
after you press the AUTO TUNE button.
Do not interrupt the RF power during a tuning procedure until
the AATU prompts with "Stop RF ...".
24