Note
The Kenwood TM-3530A is a 220 MHz FM transceiver. It features an ergonomic panel layout with a large, easy-to-read LCD display and backlit keys for simplified operation. The unit utilizes a dual microprocessor system to provide a versatile range of functions, including a memory capacity for 23 channels.
One of its notable features is the automatic autopatch transmission, which allows users to store up to 15 telephone numbers in memory for automatic dialing. Additionally, the transceiver is compatible with the optional DCL (Digital Channel Link) system for automatic open channel searches and digital squelch, as well as the VS-1 voice synthesizer for audible frequency announcements.
Options include:
TU-7: Internal Tone Unit (required for repeaters)
VS-1: Voice Synthesizer unit
CD-10: Call Sign Display unit
MU-1: Modem Unit (for DCL operations)
Specifications
– Frequency Range: 220 to 225 MHz
– Mode: FM
– Operating Temperature: -20°C to +50°C (-4°F to +122°F)
– Antenna Impedance: 50 ohms
– RF Output: (HI) 25 W min. (Low), 5 W approx. (Adjustable up to 20 W)
– Modulation: Reactance
– Frequency Stability: Less than ±15 PPM
– Max. Frequency Deviation: ±5 kHz
– Spurious Radiation: Less than -60 dB
– Audio Distortion: Less than 3% (300 Hz to 3000 Hz at 60% mod.)
– Receiver Circuitry: Double conversion superheterodyne
– Intermediate Frequency: 1st: 20.935 MHz; 2nd: 455 kHz
– Sensitivity (12 dB SINAD): Less than 0.25 µV
– Sensitivity (S+N/N): More than 50 dB at 1 mV input
– Selectivity (-6 dB): More than 12 kHz
– Selectivity (-60 dB): Less than 24 kHz
– Spurious Response: Better than 70 dB (except fd-IF/2)
– Squelch Sensitivity: Less than 0.125 µV (threshold)
– Audio Output: More than 1.5 W (8 ohms load, 5% distortion)
– DCL System
Code / Modulation: NRZ equal-length / MSK modulation
Transmission Speed: 1200 bits/second, ±200 PPM
Power Requirement
12 to 16 VDC (13.8 VDC reference)
Current Drain (Receive): 0.6A (with no input signal)
Current Drain (Transmit): Approx. 6.5A (HI), Approx. 2.5A (LOW)
