| GENERAL |
| Type: | HF receiver |
| Frequency range: |
0.54 - 30.5 MHz in thirty 1 MHz bands
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| Tuning steps: | Continuous |
| Frequency stability: | Within 300 Hz @ room temperature if the nearest
100 KHz calibration point is used to adjust the fiducial |
| Mode: | AM / CW / MCW |
| Channels / memory management: |
None
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| Power supply: | Mains: 115 / 230 VAC (Fixed power cord) |
| Current drain / power consumption: | 85 W |
| Antenna impedance / connector: | Hi-Z / SO-239 |
| Dimensions (W*H*D): | 483*267*333 mm (19*10.5*13.11") |
| Weight: | 19.5 Kg (43 lb) |
| Other features: | Noise limiter. 500 KHz IF output. 100 KHz calibrator. |
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| RECEIVER SECTION |
| Receiver system: |
Single conversion superheterodyne (1.5-3.5 MHz)
IF: 500 KHz
Double conversion superheterodyne (3.5-30.5 MHz)
1st IF: 1.5-2.5 MHz (Even bands) - 2.5-3.5 MHz (Odd bands)
2nd IF: 500 KHz
Triple conversion superheterodyne (0.5-1.5 MHz)
1st IF: 10.5-11.5 MHz
2nd IF: 2.5-3.5 MHz
3rd IF: 500 KHz
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| Sensitivity: |
Band 1: Less than 15 uV gives 1 W @ 10 dB S/N
Band 2-30: Less than 5 uV gives 1 W @ 10 dB S/N
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| Selectivity: | 100 Hz to 6.3 KHz (Depending on filter complement & selectivity setting) |
| Image rejection: | |
| AF output power / speaker: | 1.5 W at 15% distortion / External only |
| External speaker connector: | 4 or 600 ohm, Screw terminals |
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| MISCELLANEOUS |
| Manufactured: | USA, 1954-1963 (Discontinued) |
| Additional info: | |
| Related documents: |
User manual v1955 (15.1 MB)
User manual v1962 (9.4 MB)
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| Modifications and fixes: | |
| Reviews: | |
| Options / Accessories: |
F500B-08
F500B-14
F500B-31
F500B-80
270G-3
271B-3
271B-4
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Mechanical filter. 800 Hz
Mechanical filter. 1.4 KHz
Mechanical filter. 3.1 KHz
Mechanical filter. 6.0 KHz
Matching speaker. Desk mounted
Dual speaker. Rack mounted
Single speaker. Rack mounted
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