| Technical Parameters | Q-D4 |
| Frequency | 640-690mhz |
| Dimensions | 41 mm × 197 mm × 151 mm |
| Weight | 1.71 lbs (without antenna) |
| Power requirement | 12 V DC @ 0.4 A, powered by external power supply (positive) |
| Spurious suppression | >80 dB |
| Plug Type | BNC |
| Impedance | 50 Ω |
| Gain adjustment range | -18 - +42 dB (1dB step) |