| 
Genaral
 | 
| Frequency range: | 
DR-138HE:  
TX/RX 144.000-145.9975 
DR-138HT:  
TX 144.000-147.9975 
RX 136.000-173.9975 
DR-438HE:  
TX/RX 430.000-439.9975 (FCC/IC amateur radio models not available)
 | 
| Modulation: | 
16K0F3E(FM)/11K0F3E(Narrow FM) | 
| Channel steps: | 
2.5KHz, 5KHz, 6.25KHz, 8.33KHz, 10KHz, 12.5KHz, 15KHz, 20KHz, 25KHz, 30KHz, 50KHz | 
| Memory channel: | 
200 ch | 
| Antenna impedance: | 
50ohm unbalanced | 
| Frequency stability: | 
+/- 2.5ppm | 
| Power Supply Requirement: | 
13.8V DC +/- 15% Negative ground | 
| Current Drain: | 
Approx. 12A TX high / 0.6A RX max. / 0.4A RX squelched | 
| Operating temperature: | 
-20digC to +60digC | 
| Dimensions (w/o projection): | 
145(W) x 47(H) x 190(D) mm approx. | 
| Weight: | 
Approx. 1.2Kg | 
| 
Transmitter
 | 
| Power Output: | 
DR-138: 60W / 25W / 10W 
DR-438: 45W / 25W / 10W | 
| Modulation system: | 
Variable Reactance Frequency Modulation | 
| Spurious emission: | 
Less than -60dB | 
| Maximum frequency deviation: | 
+/- 5 KHz (FM) / +/- 2.5 KHz (NFM) | 
| 
Receiver
 | 
| Receive system: | 
Direct conversion | 
| Sensitivity (-12dB SINAD): | 
VHF 0.25uV / UHF 0.35uV or better | 
| Squelch: | 
Carrier/CTCSS/DCS/5Tone/2Tone/DTMF | 
| Audio output power: | 
2.0 W (8 ohm, 10% distortion) | 
Specifications subject to change without notice or obligation. Performance specification apply only to the amateur bands. Permit required for MARS use.  |