General |
Frequency coverage (MHz) |
Version | Transmit | Receiver (Working Range | Broadcast |
ID-51A |
144–148, 430–450*1 |
A Band: 137–174, 380–479 B Band: 108–174*2, 380–479 |
0.52–1.710, 88–108 |
*1 Guaranteed Range: 144-148, 440-450MHz *2 AM mode only for 108–136.995MHz |
Type of emission |
F2D, F3E, F7W |
No. of memory channels |
1304 channels (including repeater, program scan edges and call channels) |
Operating Temperature Range |
–20˚C to +60˚C |
Frequency stability |
±2.5ppm (on the basis of 25˚C) |
Power supply requirement  Alkaline cells  External DC Power |
7.4V DC (with BP-271, BP-272) 5.5V (with BP-273) 10–16V DC |
Current drain (at 7.4V DC)  Tx High  Rx Internal SP (16Ω)   External SP (8Ω) |
Less than 2.5A Less than 450mA/350mA (DV/FM) Less than 300mA/200mA (DV/FM) |
Antenna impedance |
50Ω (SMA) |
Dimensions (W×H×D) (projections not included) |
58×105.4×26.4 mm 2.28×4.15×1.04 in |
Weight (approx.) |
255g (with BP-271 & antenna) |
Transmitter |
Modulation system DV, FM |
GMSK reactance modulation, FM reactance modulation |
Output power (at 7.4V DC) |
5W, 2.5W, 1.0W, 0.5W, 0.1W (High, Mid, Low2, Low1, S-low) |
Spurious emissions |
Less than –60dBc (High, Mid), Less than –13dBm (Low2, Low1, S-low) |
Max. frequency deviation |
±5.0/2.5kHz (FM/FM-N) |
Ext. Mic impedance |
2.2kΩ |
Receiver |
Sensivity   DV  FM, FM-N |
Less than 0.28μV (at 1% BER) Less than 0.18μV (at 12dB SINAD) |
Selectivity   DV, FM-N  FM |
More than 50dB More than 55dB |
Spurious rejection |
More than 60dB |
Audio output power  Internal SP (16Ω load)  External SP (8Ω load) |
(at 7.4V DC, 10% distortion) More than 400mW More than 200mW |
Applicable IP Rating
Ingress protection standard |
Water |
IPX7 (Waterproof protection) |
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Supplied Accessories
- Battery pack, BP-271
- Antenna, FA-S270C
- Belt clip, MB-127
- Wall charger, BC-167SA
- Programming software, CS-51PLUS
- Data cable, OPC-2350LU
- Hand strap
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