Note
The Alinco DR-435 is a rugged, monoband FM mobile transceiver designed specifically for the 70 cm band. Part of Alinco's popular monoband mobile series, it shares its compact chassis, user interface, and layout with its sibling rigs (220 MHz DR-235 and 2 meter DR-135).
There are two versions of the unit:
– DR-435T: The original standard North American market release.
– DR-435MkIII: The updated iteration featuring minor component updates, improved frequency stability, and optimized firmware while retaining the exact same exterior controls and layout.
Specifications
– Frequency Range:
TX: 430.000 – 449.995 MHz (FM)
RX: 350.000 – 511.995 MHz (FM)
– Operating Modes:
16K0F3E (Wide FM)
8K50F3E (Narrow FM)
F1 (9600bps packet)
F2 (1200bps packet)
10F3 (Digital Voice)
– Channel Steps: 5, 8.33, 10, 12.5, 15, 20, 25, 30, 50 kHz
– Memory Channels: 100 channels + 1 quick recall channel (CALL)
– Antenna Impedance: 50 $\Omega$ unbalanced
– Frequency Stability: ± 2.5 ppm (some variations list ± 5.0 ppm)
– Usable Temperature Range: -10°C to +60°C (+14°F to +140°F)
RF Power Output:
High: Approx. 35 Watts
Mid: Approx. 20 Watts
Low: Approx. 5 Watts
– Modulation System: Variable reactance frequency modulation
– Spurious Emissions: Less than -60 dB
– Maximum Frequency Deviation: ± 5 kHz (Wide FM) / ± 2.5 kHz (Narrow FM)
– Microphone Impedance: 2 k$\Omega$
– Receive System: Double-conversion superheterodyne
– Sensitivity (12dB SINAD): -12.0 dBu (0.25 uV or better)
Intermediate Frequencies: 1st IF: 30.85 MHz, 2nd IF: 455 kHz
– Squelch Sensitivity: -16.0 dBu 0.1 uV or better
– Selectivity:
Wide FM: -6 dB at 12 kHz or more / -60 dB at 28 kHz or less
Narrow FM: -6 dB at 6 kHz or more / -60 dB at 14 kHz or less
– Audio Output Power: More than 2.0 Watts (at 8Ω, 10% THD)
Power Requirement: 13.8V DC ± 15% (Negative Ground)
Current Drain:
Transmit (High Power): Approx. 10.0 A max.
Receive (Max Audio): Approx. 600 mA
Receive (Squelched): Approx. 400 mA
