24
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)
Tune
Load
Input PWR (W)
Output PWR (W)
1.845
70
45
52
2000
3.630
69
51
53
2000
7.050
50
90
55
2000
10.125
72
28
54
2000
14.175
69
40
54
2000
18.150
81
48
62
2000
21.230
47
67
50
2000
24.940
61
64
51
2000
28.450
33
76
43
2000
50.200
22
90
52
1500
NOTE
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:
Safety circuit stopped transmitting, fault LED
is
ON
(Fault code 4 is saving to the memory).
Release PTT, set proper positions of BAND,
TUNE and LOAD according to the table and
press PTT
again.
Type of supported TCVR and working
frequency are visible on the display.
AUTO LED is ON.
Содержание OM2000+
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