9
SRF-H11
FM 2nd OSC Adjustment
Procedure :
1. Turn the set to optional frequency.
2. Connect an electrolytic capacitor (10µF/16V) between pin !¡
of IC1 and ground.
3. Connect the frequency counter to @¢ pin and GND of IC1 as
shown the figure below.
4. Adjust L4 for 56.5 – 57.0MHz reading on the frequency
counter.
FM VCO Adjustment
Procedure :
1. Connect an electrolytic capacitor (10µF/16V) between pin !¡
of IC1 and ground.
2. Connect the frequency counter to !ª pin and GND of IC1 as
shown the figure below.
3. Turn the set to 98MHz.
4. Adjust L6 for 37.95 – 38.05kHz reading on the frequency
counter.
FM RF signal
generator
Carrier frequency : 98MHz
Modulation : no modulation
Output level : 1mV (60dB)
FM
WIRE ANTENNA
input
set
0.01µF
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