Voltage And Current At The Antenna Output; Reflected Power, Forward Power And Swr At Antenna Output; Power Supply Voltage And Temperature In The Tuner Unit; Tuner Working Hours - Acom Owner's Manual

6.4.1. Voltage and Current at the Antenna Output

The antenna voltage and current are indicated in root-mean-square (rms) values.
They should not exceed:
ANTENNA VOLTAGE < 500 V (rms);
ANTENNA CURRENT < 10 A (rms).

6.4.2. Reflected Power, Forward Power and SWR at Antenna Output

The reflected power, forward power and SWR should not exceed:
ANTENNA REFLECTED POWER < 400 W;
ANTENNA FORWARD POWER < 1600 W;
ANTENNA SWR < 10:1.
Note that at SWR>1:1 at the tuner output, the forward power will exceed the tuner input power by the value
of the reflected from the output power. Therefore, it would be normal, e.g., at ANTENNA SWR=3:1, and input
power from the amplifier 1000 W, to measure:
ANTENNA FORWARD POWER = 1250 W and
ANTENNA REFLECTED POWER = 250 W
at the antenna output.

6.4.3. Power Supply Voltage and Temperature in the Tuner Unit

These two values should be within the following ranges:
ATU PS VOLTAGE = 22 ... 30 VDC;
ATU TEMPERATURE = -40...+65 °C (-40...+150 °F).

6.4.4. Tuner Working Hours

This is the number of hours during which the tuner has been powered.
Page 52 of 72 | S e c t i o n ADVANCED FUNCTIONS AND OPTIONS
User's Manual | ACOM 04AT | Remote Automatic Antenna Tuner and Switch
May 2021