Specifications; Parameters - Acom 04AT Operating Manual

8. SPECIFICATIONS

8.1 PARAMETERS

8.1.1 OPERATING FREQUENCY RANGE
Continuous from 1.8 to 30 and from 50 to 54MHz, extensions and changes on re-
quest.
8.1.2 MINIMUM RANGE OF THE MATCHED IMPEDANCES (AT EACH OF THE
FOUR ANTENNA OUTPUTS)
All impedances with SWR from 1:1 to 3:1 towards 50 Ohm, any phase angle, unbal-
anced input and output.
For some frequencies and impedances, matching is possi-
ble at SWR above 3:1 at the antenna output (up to 10:1),
but the maximum allowed power is reduced, see S. 8.1.3.
8.1.3 MAXIMUM ALLOWED INPUT POWER – PEP, MEAN OR CONTINUOUS
CARRIER, WITHOUT MODE LIMITATION
When tuning is possible for antenna SWR above 3:1, the maximum permissible input
power is reduced gradually as per Table 8.1:
Table 8.1 Maximum input power of the tuner as function of the antenna SWR*
SWR 1-3:1
Pin, W 1200
Operation with antenna output SWR above 10:1 is
not allowed.
8.1.4 RF INPUT CHARACTERISTICS
- Rated impedance: 50 Ohm unbalanced
- Input connector type: UHF/PTFE (SO239A) – 1 pce.
- SWR during full tuning (basic cycle): no higher than 2:1
- SWR immediately after full tuning: no higher than 1.5:1 (1.3:1 typically).
8.1.5 ANTENNA OUTPUTS CHARACTERISTICS, ANTENNA 1 TO ANTENNA 4
- Rated impedance: 50 Ohm unbalanced
- Maximum antenna output SWR: 3:1 (up to 10:1 with RF power limitations, see
S. 8.1.3)
- Output connectors type: UHF/PTFE (SO239A) – 4 pcs.
NOTE
3.5:1* 4:1*
900 700
* (when tuning is possible for SWR above 3:1)
WARNING
5:1* 7:1*
500 300
10:1*
200
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