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7-5. FIRMWARE UPDATES
C A U T I O N
Before you change the built-in firmware version, check its compatibility with
the revisions of the hardware and of the boot loader in your amplifier - see
S. 5-5 for establishing the proper version. If you have any doubts about the
versions, please consult your dealer before you undertake any action.
When ACOM publishes a new version of the built-in firmware, the user can upload it in the amplifier after he
checks their compatibility – see the note above.
When compatibility is confirmed a return to an earlier version is also possible.
Changes of the built-in firmware are done through the RS232 interface of the amplifier, following a special
procedure, described in detail in a help file accompanying the respective version.
8. SPECIFICATIONS
8-1. Parameters
a) Standard frequency coverage (*):
1.800 - 2.000 MHz
3.500 - 4.000 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 after negotiations with the manufacturer.
b) Rated output power: 600W +/-0.5dB, PEP or continuous carrier, without mode limitation.
c) Intermodulation distortions (IMD3): better than 28dB (30dB typically) below the rated PEP output.
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;
- admissible 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;
f) RF power gain: 14dB +/-1dB (typically 25W for 600W output power);
g) Mains power supply voltage: 85-132V with 10А main fuses and 170-265V with 6.3А main fuses, 45-66Hz,
single phase;
h) Mains power consumption at full output power: 1500VA or less with a power factor of 0.95 or higher;
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