| Type: | Digital readout/Frequency counter | 
| Frequency range: | ~144-148 MHz | 
| Impedance/connectors: |  | 
| Power supply: | 13.5 VDC (Supplied by radio) | 
| Current drain/power consumption: | ? mA | 
| Dimensions (W*H*D): | 114*34*160 mm (4.49*1.34*6.3") | 
| Weight: | 490 g (1.08 lb) | 
| Manufactured: | Japan, 1976-1977 (Discontinued) | 
| Other: | Made for FT-221 and FT-221R | 
| Related documents: | User manual (570 KB) | 
| Modifications and fixes: |  | 
| Reviews: |  | 
| Options/Accessories: |  |