Hallicrafters S20R 'Sky Champion'
This was gifted to me by a YL who's now a silent-key.
I repaired & used this beautiful WWII RX till I got hold of a Phillips D2999 PLL synthesized general coverage HF RX with a resolution of 1KHz and a tunable BFO.
The S20R, however, is still in working condition though I've replaced the original speaker with a separate inductor/ line filter (in place of the old field coil) and a normal 8 ohms speaker.
This RX is ok up to 40 Mts. Any serious work above 40Mts will call for better image rejection and sensitivity.
Here's a brief description.
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General Coverage Communications Receiver
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Sky
Champion S 20 R |
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Made In: United States 1939-1945 |
Voltages: 117/ 220 VAC |
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Coverage: 550 - 44000 kHz
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Readout: Analog |
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Modes:
AM/CW |
Selectivity:
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Circuit: Single Conversion Superheterodyne.
9 Tubes. |
Physical: 18.5x8.5x9.375" 32 Lbs.
470x216x238mm 14.5 kg |
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Circuit Complement:
6SK7 RF Amp, 6K8 1st
Detector-Mixer/HF Osc, 6SK7 1st IF Amp, 6SK7 2nd IF Amp, 6SQ7 2nd
Detector/AVC/1st Audio Amp, 6F6G 2nd Audio Amp, 6H6 ANL, 6J5GT BFO and
80 Rectifier. |
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Features:
• ¼" Head. Jack •
Standby • ANL • Bandspread 0-100 • Mute Terminals • AVC ON/OFF
• BFO • Speaker Terminals • Speaker 5" • RF Gain • Tone
Hi/Med/Lo • Jack for S-Meter • Dial Light • Flywheel Tuning •
Hinged Top Cover • Dial Light |
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Comments: Ranges: .55-1.78, 1.74-5.4,
5.3-15.8 and 15.5-44 MHz. Gray metal cabinet with stainless steel trim. |
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