User's Manual
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necessary instructions, if you choose to decode the downloaded hexadecimal data by yourself.
7-4. FIRMWARE UPDATES
C A U T I O N
Before you change the firmware version, check the new version
compatibility with the revisions of the hardware and of the boot
loader in your amplier - see S. 5-5. If you have any doubts about
the versions, please consult your dealer before you undertake
any action.
When ACOM issues a new rmware version, the user can upload it in the amplier after he checks the
compatibility – see the note above.
When compatibility is conrmed a return to an earlier version is also possible.
8. SPECIFICATIONS
8-1. Parameters
a) Standard frequency coverage (*):
1.800 - 2.000 MHz
5.020 - 5.455 MHz
7.000 - 7.300 MHz
10.100 - 10.150 MHz
14.000 - 14.350 MHz
18.068 - 18.168 MHz
21.000 - 21.450 MHz
24.890 - 24.990 MHz
28.000 - 29.700 MHz
50.000 - 54.000 MHz
(*) Extensions or changes of the frequency coverage are possible on request.
b) Rated output power: 1000W +/-0.5dB, PEP or continuous carrier, without mode limitation 500W
with mains power supply voltage below 150VAC.
c) Intermodulation distortions (IM3): better than 31dB below the rated PEP.
d) Harmonic and parasitic emissions output suppression: better than 60dB (65dB typically).
e) Input and output impedances:
- nominal value: 50 Ohm unbalanced, UHF (SO239) type connectors;
- input circuit: broadband, SWR below 1.2:1 (1.1:1 typically); 1.8 – 54 MHz continuous range
without retuning or switching;
- RF by-pass path SWR - below 1.1:1, 1.8-54 MHz;
- acceptable SWR at the output load (the antenna): up to 3:1 with proportional power reduction
and up to 1.5:1 for full output power;