| GENERAL |
| Type: | HF/VHF receiver |
| Frequency range: |
0.145-30 MHz / 88-108 MHz in 11 bands:
| LW: | 0.145-0.4 MHz |
| MW: | 0.52-1.6 MHz |
| SW1: | 1.6-3.0 MHz |
| SW2: | 3.0-7.0 MHz |
| SW3: | 7.0-11.0 MHz |
| SW4: | 11.0-15.0 MHz |
| SW5: | 15.0-19.0 MHz |
| SW6: | 19.0-23.0 MHz |
| SW7: | 22.0-26.0 MHz |
| SW8: | 26-30 MHz |
| FM: | 88-108 MHz |
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| Tuning steps: | Analog / continuous |
| Frequency stability: | ? ppm |
| Mode: | AM / SSB / CW / WFM |
| Channels / memory management: | None |
| Power supply: | Mains: 110-125 / 220-240 VAC (2-pin connector)
or 12 VDC external (Barrel connector, center negative)
or eight internal LR20 / D batteries |
| Current drain / power consumption: | Less than 10 W @ mains
? mA @ 12 VDC |
| Antenna impedance / connector: | 50 ohm / SO-239
Hi-Z / Two ?
75 ohm / ?
Dual ferrite bar antennas and a telescopic whip |
| Dimensions (W*H*D): | 482*200*354 mm (18.98*7.87*13.94") |
| Weight: | 8 Kg (17.64 lb), without batteries |
| Other features: | Blue fluorescent display. |
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| RECEIVER SECTION |
| Receiver system: |
Single conversion superheterodyne (WFM/LW/MW/SW1)
IF: 10.7 MHz (WFM), 455 KHz (LW/MW/SW1)
Double conversion superheterodyne (SW2-8)
1st IF: 2 MHz
2nd IF: 455 KHz
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| Sensitivity: |
AM (10 dB S/N)
0.55-1.6 MHz: 60 uV
5-30 MHz: 1.1-1.4 uV
SSB (10 dB S/N)
5-30 MHz MHz: 0.6-1 uV
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| Selectivity: | |
| Image rejection: | |
| AF output power / speaker: | 2 W at ?% distortion / 4 ohm |
| External speaker connector: | 3.5 mm, 4-8 ohm |
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| MISCELLANEOUS |
| Manufactured: | Japan (By Matsushita), 1979-1983 (Discontinued) |
| Additional info: |
This is the european version of RF-4900 with the added longwave band.
Oddly, there was also a DR-49 version without the LW band.
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| Related documents: | |
| Modifications and fixes: | |
| Options / Accessories: |
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