Specifications

TM 11-5820-670-30
1-15. CRS BALANACED MIXER A3200.
The balanced mixer accepts inputs from the following two sources:
EL1AT090
Local oscillator through high-pass filter FL3002
Harmonic generator
Local oscillator signals are applied to the mixer through a buffer amplifier to prevent loading down the
local oscillator. Twelve frequencies, 1 to 12 MHz, are applied to the mixer with the local oscillator’s
output. The signals are heterodyned to produce four strong mixed output frequencies.
BALANCED MIXER OPERATING EXAMPLE
Assume the radio is tuned to 30 MHz, in which case the local oscillator runs to 41.50 MHz. The 41.50
MHz frequency is mixed with 12 signals generated by the harmonic generator, producing a mixed
output containing each of the 12 harmonics, local oscillator frequency, and sum and difference
frequencies listed below:
LOCAL OSCILLATOR
FREQUENCY
HARMONIC GENERATOR
FREQUENCY
41.50 MHz
41.50 MHz
41.50 MHz
41.50 MHz
41.50 MHz
41.50 MHz
41.50 MHz
41.50 MHz
41.50 MHz
41.50 MHz
41.50 MHz
41.50 MHz
1 MHz
2 MHz
3 MHz
4 MHz
5 MHz
6 MHz
7 MHz
8 MHz
9 MHz
10 MHz
11 MHz
12 MHZ
SUM
DIFFERENCE
42.50 MHz
43.50 MHz
44.50 MHz
45.50 MHz
46.50 MHz
47.50 MHz
48.50 MHz
49.50 MHz
50.50 MHz
51.50 MHz
52.50 MHz
53.50 MHz
40.50 MHz
39.50 MHz
38.50 MHz
37.50 MHz
36.50 MHz
35.50 MHz
34.50 MHz
33.50 MHz
32.50 MHz
31.50 MHz
30.50 MHz
29.50 MHz
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