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Category Archives: BFDX
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BFDX MT-7250 DMR Mobile
Door Hans PD0AC, Ham Radio Blog PD0AC
We knew BFDX already as a manufacturer of affordable DMR hand helds, and now a 30 Watt mobile radio popped up on the screen: the BFDX MT-7250. Grapevine Ham Radio sells this model for $329.99.
I find the number of channels/zones (160/50) a bit disappointing, but the price is right.
| General Specifications |
|
| Frequency range | VHF: 136-174MHz, or UHF: 350-390 MHz, or UHF: 400-470 MHz, or UHF: 450-520 MHz |
| Channel Capacity | 160 |
| Zones | 50 |
| Channel Spacing | 12.5KHz |
| Voltage | DC 13.8V (±15%) |
| Frequency stability | ±1.5ppm |
| Antenna impedance | 50Ω |
| Dimensions | 150(L)*160(W)*40(H)mm |
| Weight | 1.29Kg |
| Transmitter | |
| RF power output | VHF/UHF high power:30W VHF/UHF low power:15W |
| 4FSK Modulation | 12.5kHz (only data):7K60FXD 12.5kHz (data and voice):7K60FXE |
| FM Modulation | 12.5 kHz:8K50F3E |
| Modulation Limiting | +/- 2.5kHz @ 12.5kHz |
| FM Noise | -40dB |
| Conducted Emission | -36 dBm≤1GHz/-30 dBm≥1GHz |
| Adjacent Channel Power | ≤-60dB |
| Audio Response | +1/-3 dB |
| Audio Distortion | 3% |
| Digital Voice coder Type | AMBE+2™ |
| Receiver | |
| Digital sensitivity | 5% BER:0.25 uV |
| Analog sensitivity | 0.25 uV (12 dB SINAD) |
| Inter-modulation | 60dB |
| Adjacent Channel Selectivity | 60 dB |
| Spurious Response Rejection | 70 dB |
| FM Noise | -40dB |
| Audio Response | +1/-3 dB |
| Audio output | 3W |
| Audio Distortion | 3% (typical) |
| Conducted Spurious Emission | -57dBm |
| GPS Accuracy | Horizontal Accuracy≤-10m (with well signal) |
| TTFF (Time To First Fix) Cold Start | < 1 minute(with well signal) |
| TTFF (Time To First Fix) Hot Start | < 10second(with well signal) |
| Environmental Specifications | |
| Working Temperature | -20℃—+70℃ |
| Storage Temperature | -40℃—+80℃ |
| Humidity | MIL-STD-810C/D/E/F |
| Vibration & Shock | MIL-STD-810C/D/E/F |