| Frequency Range Type 1
 Type 2
 | 136-174 MHz
 -
 | 450-520 MHz
 400-470 MHz
 | 
| Number of Channels | 512 | 512 | 
| Zones | 128 | 128 | 
| Max. Channels per Zone | 250 | 250 | 
| Channel Spacing Analog
 Digital
 | 12.5 / 15 / 25 / 30 kHz
 6.25 / 12.5 kHz
 
 | 12.5 / 25 kHz
 6.25 / 12.5 kHz
 
 | 
| Operating Voltage | 7.μV DC ± 20% | 
| Battery Life With KNB-48L
 | 5/5/1990: Approx. 14.5 hours
 10/10/80: Approx. 9.0 hours
 | 
| Operating Temperature Range | -22° F to +140° F (-30° C to +60° C) | 
| Frequency Stability | ± 2.0 ppm 
 | ± 1.0 ppm | 
| Antenna Impedance | 50 Ω | 
| Dimensions Radio only
 with KNB-47L
 &n
 | Projections not included (W x H x D) 2.28 x 5.02 x 1.63 in (58 x 127.5 x 41.3 mm)
 2.28 x 5.02 x 1.63 in (58 x 127.5 x 4 1.3 mm)
 2.28 x 5.02 x 1.91 in
 | 
| Weight Radio only
 with KNB-47L
 with KNB-48L
 | 8.82 oz (250 g)
 13.23 (375 g)
 14.29 oz (405 g)
 | 
| FCC ID Type1
 Type2
 | ALH378400
 -
 
 | ALH378500
 ALH378501
 | 
| IC Certification Type 1
 Type 2
 | 282D-378400
 -
 
 | 282D-378500
 282D-378501
 |