Icom IC-R2 testing and setup

IC-R2 Alignment Procedure

(To enter the alignment mode)

- Pull down cloning terminal with 68K resistor

- Turn on the power while holding FUNC button

- Clone the radio

- Turn off the radio and turn back on the radio.

(When radio is in alignment mode, each key has assigned following function)

- Main dial knob: Setting adjustment value

- Band button: CH up

- Function button: CH down

- V/M button: Toggle between alignment mode and verifying mode

(To escape alignment mode)

- Turn off the radio

- Hold both Function and V/M buttons and turns radio on

PLL 1st VCO

- Connect digital volt meter to CP LV1 on the RF board

- Set display to 493.300MHz (Shift on)

- Verify the lock voltage for 2.4V at receive mode

- Set display to 282.900MHz (Shift on)

- Verify the voltage for less than 12V at receive mode

- Set display to 0.495MHz (Shift off)

- Verify the voltage for 1.9V at receive mode

- Set display to 493.295MHz (Shift off)

- Verify the voltage for less than 12V at receive mode

PLL 2nd VCO

- Connect digital volt meter to CP LV2 on the RF board

- Set display to 430.000MHz

- Verify the lock voltage for 0.7V at receive mode

- Set display to 493.300MHz

- Verify the voltage for less than 2.5V at receive mode

PLL Frequency

- Connect Frequency counter to CP F on RF board

- Set display to 280.100MHz (FR ch)

- Adjust S9 (Main dial) for 546.800MHz at receive mode

De-modulator output

- Connect standard signal generator to antenna connector

- Connect digital volt meter to CP QUAD on the RF board

- Set display to 145.600MHz (tk ch)

- Apply 145.600MHz/60dBu (No modulation) to radio

- Adjust L21 on RF board for 1.0V

VHF receiver

- Connect standard signal generator to antenna connector

- Connect digital volt meter to CP SEN on the RF board

- Set display to 145.600MHz (tk ch)

- Apply 145.600MHz/0dBu (No modulation) to radio

- Adjust S9 (Main tuning knob) for maximum voltage

- Verify receive sensitivity for better than -8dBu between 118MHz and 175MHz

UHF receiver

- Connect standard signal generator to antenna connector

- Connect digital volt meter to CP SEN on the RF board

- Set display to 435.600MHz (tk ch)

- Apply 435.600MHz/0dBu (No modulation) to radio

- Adjust S9 (Main tuning knob) for maximum voltage

- Verify receive sensitivity for better than -5dBu between 330MHz and 470MHz

S meter

- Connect standard signal generator to antenna connector

- Set mode to FM

- Set display to 14.100MHz (RS ch)

- Apply 14.100MHz/-6dBu (No modulation) to radio

- Repress MOD button, and verify s meter readout for 3 dots

- Set display to 145.100MHz (RS ch)

- Apply 145.100MHz/-6dBu (No modulation) to radio

- Repress MOD button, and verify s meter readout for 3 dots

- Set display to 200.100MHz (RS ch)

- Apply 200.100MHz/-6dBu (No modulation) to radio

- Repress MOD button, and verify s meter readout for 3 dots

- Set display to 435.100MHz (RS ch)