| GENERAL | 
| Type: | VHF receiver | 
| Frequency range: | 30-50 MHz | 
| Tuning steps: | Channelized and VFO, selectable | 
| Frequency stability: | ? ppm | 
| Mode: | FM | 
| Channels / memory management: | 2 regular XTAL controlled
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| Power supply: | Mains: 117 VAC or 12 VDC
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| Current drain / power consumption: | ? mA @ 12 VDC | 
| Antenna impedance / connector: | 50 ohm / SO-239 | 
| Dimensions (W*H*D): | 124*44*188 mm (4.88*1.75*7.38") | 
| Weight: | ? Kg (? lb) | 
| Other features: |  | 
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| RECEIVER SECTION | 
| Receiver system: | Double conversion superheterodyne 1st IF: ? MHz
 2nd IF: ? KHz
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| Sensitivity: | 0.7 uV (20 dB S/N) | 
| Selectivity: |  | 
| Image rejection: |  | 
| AF output power / speaker: | 2 W at ?% distortion / 8 ohm | 
| External speaker connector: |  | 
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| MISCELLANEOUS | 
| Manufactured: | Japan, 1973-1974 (Discontinued) | 
| Additional info: | New price 1973 in the US: $89.95 New price 1974 in the US: $79.95
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| Related documents: |  | 
| Modifications and fixes: |  | 
| Reviews: |  | 
| Options / Accessories: | 
| HB-509A HB-512
 | Portable battery pack Base unit with AC supply and NiCd charger
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