Cherokee Radios CBS2100
Documentation Project
CBTricks.com

ALIGNMENT PROCEDURE MEASUREMENT CONDITION

The following sections describes the alignment procedure for the CBS-2100 mobile transceiver under following reference environment conditions:

Temperature: 25 Degrees C (77 Degrees F)
Relative Humidity: 65%
Power Supply Voltage: 13.8V +/- 3%

TEST EQUIPMENT / TOOLS REQUIRED

The following list of equipment is recommended for use in setting up the radio properly. Please ensure that all test equipment are calibrated according to the manufacturers instructions.

- 50 ohm resistive load for the antenna output with 20 Watts power rating
- Frequency Counter 30MHz, +/-100HZ tolerance, high input impedance and high sensitivity
- HF Signal Generator, 30MHz with AM modulation, and RF output attenuators
- Oscilloscope, 100MHZ, high input impedance
- Digital multi-meter - 8 ohms 5 Watts resistor as Loudspeaker load
- Audio signal generators, 10Hz to 20KHz, 600 Ohms impedance with attenuators (2nd set Optional)
- RF Wattmeter, 50 ohms 15 Watts, then-nocoupled
- Regulated DC Power Supply, 13.8V 5A
- Dummy Microphone plugs
- VTVM, 0.1 mV sensitivity
- Circuit Diagram for CBS-2100
- PCB Layout for CBS-21 00
- Tuning tools for the RF/IF transformers and the VR potentiometers
- Spectrum Analyzer (Optional)

PLL Circuit Alignment
Transmitter Alignment
Receiver Alignment