KENWOOD TR-3600A (01) PDF Document

To remove the cases and PC boards on your KENWOOD TR-3600A, follow these steps:

1. Depress the release button and pull the battery pack off to the right.

2. Remove the 4 screws from the battery pack bottom plate.

3. Remove the 3 screws from the top and bottom cases.

4. Open the case to the front by holding it with both hands as shown in the illustration. (Note: Indented retainers are located on the “hinge” or swing).

5. Remove the 3 screws from the DCL unit mounting bracket.

6. After removing 4 screws, separate the RX and TX units.

7. Remove the escutcheons from the TX and RX units.

Before performing adjustments on your KENWOOD TR-3600A, set the controls as follows:

POWER/VOL: OFF

KEY LOCK: OFF

TX STOP: OFF

DCS: ON

HI/LOW: HI

SQL VR: MIN

Notes:

• When adjusting the trimmers or coils, use a non-inductive tuning tool.

• When adjusting the RX section, never transmit to prevent SSG damage.

• Connect the MIC connector as shown in the service manual. The SSG output level is indicated as open circuit.

To perform the Phase-Locked Loop (PLL) adjustment on your KENWOOD TR-3600A, follow this procedure:

To perform the transmitter adjustments on your KENWOOD TR-3600A, follow these procedures for Power, Frequency, Low Power, and Modulation.

To perform the receiver sensitivity adjustment on your KENWOOD TR-3600A, follow this procedure:

To perform an operation check on your KENWOOD TR-3600A (K,M1 type), follow these step-by-step procedures. Note: Shift adjustment frequency to 440 MHz order for K,M1 types.

Call sign input:

1. Connect to EXT. SP, turn POWER/VOL ON, and press RESET SW ON. The display should show “S”.

2. Depress 1 key. Display shows “S 1”.

3. Depress 1 key again. Display shows “S 1”, and you should hear “1 1” Tone sounds.

4. Depress 2 key two times. Display shows “S 2”, and you should hear “2 2” Tone sounds.

5. Depress 3 key two times. Display shows “S 3”, and you should hear “3 3” Tone sounds.

6. Depress 4 key two times. Display shows “S 4”, and you should hear “4 4” Tone sounds.

7. Depress 5 key two times. Display shows “S 5”, and you should hear “5 5” Tone sounds.

8. Depress 6 key two times. Display shows “S 6”, and you should hear “6 6” Tone sounds.

Digital code input:

1. Depress MS key. Display shows “0 0 0 0 0”.

2. Depress 1 key. Display shows “1”. Tone sounds.

3. Depress 1 key. Display shows “1 1”. Tone sounds.

4. Depress 1 key. Display shows “1 1 1”. Tone sounds.

5. Depress 1 key. Display shows “1 1 1 1”. Tone sounds.

6. Depress 1 key. Display shows “1 1 1 1 1”. Tone sounds.

7. Depress MS key. Display shows “0 0 0 0 0”. Tone sounds.

8. Depress 1 → 2 → 3 → 4 → 5 keys. Display shows “1 2 3 4 5”. Tone sounds when key depressed.

9. Depress MS key. Display shows “0 0 0 0 0”. Tone sounds.

10. Depress 6 → 7 → 8 → 9 → 0 keys. Display shows “6 7 8 9 0”. Tone sounds when key depressed.

Verify Scan:

1. Depress C key. Display shows “S 4 3 3 . 0 0 0”.

2. Depress F → 8 keys.

3. Depress ▲ or ▼ keys. Tones will sound for each digit (11, 22, 33, etc.).

4. Depress MS key. Display shows “6 7 8 9 0”. Tone sounds.

5. Set SQ Pot. to MIN (Counterclockwise). Scan stops.

6. Set SQ Pot. to Threshold. Scan restarts.

7. Depress C key. Scan stops. Tone sounds.

8. Depress ▲ key. Display changes to “S 4 3 3 . 0 0 5”. Tone sounds.

9. Depress ▼ key. When depressed, tone sounds and frequency increases/decreases by 5kHz.

10. Depress F → 7 keys. [SCAN] is displayed. Display increases every 5 seconds.

11. Depress F → 9 keys. [M] is displayed. Scan stops.

ALERT function:

1. Depress F → 0 keys. “ALERT” is displayed.

2. Set SQ Pot. to MIN (Counterclockwise). The tone sounds every 6 seconds.

3. Depress F → 0 keys. “ALERT” goes off.

Repeater function:

1. Depress 9 → 0 → 0 → F → MR → 0 keys. Display shows “S 4 3 9 . 0 0 0”.

2. Depress C → C keys. Display shows “S 4 3 3 . 0 0 0”.

3. Push REV SW. Display shows “+ 4 3 3 . 0 0 0”.

4. Depress F → 3 keys. Display shows “+ 4 3 8 . 0 0 0”.

5. Depress F → 5 keys. Display shows “S 4 3 3 . 0 0 0”.

Memory input and MS Verification:

1. Enter a frequency (e.g., 0 → 0 → 0 → F → MR → 1 keys). Display shows “4 3 0 . 0 0 0” stored in memory 1.

2. Depress the MS key. “MS” is displayed.

3. Set SQ Pot. to Threshold. Scan channel 1 to 0 in order.

4. Depress MS and 2 key at the same time. Channel 2 is skipped.

5. Depress C key. MS goes off. Scan stops.

6. Depress MR key. Display shows “1 2 6 7 8 9 0”.

7. Depress 2 key. Display shows “4 3 5 . 0 0 0 ★”. The star (★) should not be lit.

The Digital Coded Squelch (DCS) circuit on the KENWOOD TR-3600A allows for selective communication by using digital codes.

DCS Reception Operation:

A received audio signal is amplified and sent to the modem IC. The modem filters and demodulates the MSK (Minimum Shift Keying) signal into an NRZ (Non Return Zero) signal. The microprocessor then retrieves this data. Frame sync detection is performed, and once 15 bits coincide, Hagelburger decode processing begins. After decoding, a check is performed to see if the frequency data is decimal or all F (Hexadecimal). The MTC (microprocessor transfer control) line goes high to transfer the data to the main microprocessor, which processes it according to the DCS system conditions.

DCS Transmission Operation:

When the main microprocessor detects the transmission mode, it brings the CTM (communication request) line high. The DCS microprocessor then retrieves data via the serial interface. After all data is retrieved, it performs Hagelburger encode processing. Upon completion, the ME (modulator enable) line goes high, and the modem IC begins transmitting the MSK-modulated signal by sync-inputting the NRZ signal in lock with the transmission clock. When data is transmitted, all the frequency data should be F (Hexadecimal).

Here are the general, transmitter, and receiver specifications for the KENWOOD TR-3600A transceiver.

General Specifications

• Frequency Range:

  440.000–449.995MHz (K,M1)

  430.000–439.995MHz (M2,T,W,X)

• Memory Channels: 10 CH
• Mode: FM (F3), (F2 in DCS mode)
• Operating Voltage: 8.4V DC ±25%
• Power Requirement: 8.4V, 450mAH (Ni-Cd battery pack) or 9V manganese or alkaline (not Ni-Cd)
• Current Drain:

  Approx. 35mA in receive mode with no input signal

  Less than 750mA in HI transmit mode (at 8.4V)

  Less than 400mA in Low transmit mode (at 8.4V)

• Operating Temperature: -20°C to +50°C
• Antenna Impedance: 50Ω
• Dimensions (With Ni-Cd battery): 66(W) x 168(H) x 40(D) mm
• Weight (With Ni-Cd battery): 540g (1.2lbs.)

Transmitter Specifications

• RF Output Power: HI = 1.5W, LOW = 0.3W approx.
• Modulation: Variable reactance direct shift
• Frequency Tolerance: Less than ±20 x 10⁻⁶ (-10°C to +50°C)
• Maximum Frequency Deviation: ±5kHz
• Spurious Radiation: Less than -60dB

Receiver Specifications

• Circuitry: Double conversion superheterodyne
• Intermediate Frequency: 1st IF = 21.6MHz, 2nd IF = 455kHz
• Sensitivity: Better than 1µV for S/N 30dB, Less than 0.25µV for 12dB SINAD
• Pass-Band Width: More than 12kHz (-6dB)
• Selectivity: Less than 24kHz (-40dB)
• Spurious Response: Better than 50dB
• Squelch Sensitivity: Less than 0.25µV (threshold)
• Audio Output Power: More than 400mW (at 10% distortion and 8Ω load)

Here are the specifications for various optional accessories available for the KENWOOD TR-3600A.

PB-26 Ni-Cd Battery

• Nominal voltage: 8.4V, 450mAh
• Recharge time: Approx. 15 hours (with supplied charger or MS-1) when fully discharged
• Working time: Depends on transceiver, operating habits
• Charge/discharge cycle: Approx. 300 cycles

BC-2 Battery Charger (T, W Type Only)

• Rating: Primary side AC220V 50/60Hz (Europe) or AC240V 50Hz (England); Secondary side DC 10.15V, 42.5mA
• Weight: About 240g (Europe), 220g (England)

BT-3 AA Manganese/Alkaline Battery Case

• Rating: AA Manganese/Alkaline battery x 6 pcs
• Voltage: 9V (1.5V x 6)
• Dimensions: 66 (W) x 52 (H) x 40 (D) mm

EB-3 External C Manganese/Alkaline Battery Case

• Rating: C Manganese/Alkaline battery x 6 pcs
• Voltage: 9V (1.5V x 6)
• Dimensions: 63 (W) x 175 (H) x 34 (D) mm

DC-26 DC-DC Converter

• Input voltage: 13.8V DC ± 15%
• Output voltage: 8.4V DC ± 5%
• Output current: 800mA (at input voltage of 13.8V DC, with max. load)
• Weight: Approx. 110g

HMC-1 Headset with VOX

• Mic input sensitivity: 1.5mV (1kHz)
• Delay time: Approx. 1.2 sec.
• DC current: 3.5mA

SMC-30 Speaker Microphone

• Speaker: 40mmφ, 0.5W Max. Input, 8Ω Impedance
• Microphone: Electret condensor, -67dB Sensitivity, 2kΩ Output Impedance

ST-2 Base Stand

• Power Source Voltage: 120V/220V/240V models available
• Charging Type: Boosting charge type
• Charging current: Approx. 600mA (Boosting), 20mA (Trickle)
• Charging time: Approx. 1 hr (Boosting), 20 hrs (Trickle)