OM POWER OM2000+ User Manual page 25

A tuning table is delivered with the power amplifier. For coarse tuning select a band with BAND switch
and choose the setting of "TUNE" and "LOAD" capacitors according to the table.
Band (MHz)
1.845
3.630
7.050
10.125
14.175
18.150
21.230
24.940
28.450
50.200
Delivered tuning table was made for 50 Ohm loading of PA (dummy load). Each amplifier should have
different values depending on used frequency and used type of antenna. Make your own table valid
for your real conditions.
There are two ways how to do fine tuning. The first method uses a gradual increase in the input power
when tuning the PA (as most operators accustomed). In every case we recommend adjust the display
for both of methods so it shows two parameters important for fine tuning - TUNE and Is graph (> l <).
Press OPER to enter operation mode. Apply low input power and press PTT. Be sure you selected right
BAND, TUNE and LOAD knob positions. If you made some mistake, fault message appears:
Tune Load
70 45
69 51
50 90
72 28
69 40
81 48
47 67
61 64
33 76
22 90
NOTE
Input PWR (W)
52
53
55
54
54
62
50
51
43
52
Safety circuit stopped transmitting, fault LED
Type of supported TCVR and working
is ON (Fault code 4 is saving to the memory).
frequency are visible on the display.
Release PTT, set proper positions of BAND,
TUNE and LOAD according to the table and
press PTT again.
Output PWR (W)
2000
2000
2000
2000
2000
2000
2000
2000
2000
1500
AUTO LED is ON.
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