The Hallicrafters S20R SKY CHAMPION Shortwave Receiver from 1941 is a vintage VALVE TUBE radio communication equipment that operates on 120V valve tube QRP. For parts or not working


This grey-coloured receiver, manufactured in the United States, supports SSB, CW, and AM modes in the AM and HF bands.


Despite its expired manufacturer warranty, this classic piece of equipment from Hallicrafters is a valuable addition for ham/amateur radio enthusiasts looking to tune into the past.


I was looking for someone who could restore it but I have since given up.


The 80 year old mains cable has perished by the radio  is 'sound', mechanically speaking. All the electrolytic capacitors will need to be replaced as will many of the resistors.

B

Collection prefered, from Barnet, Hertfordshire is an option. I cannot seem to get ebay to add 'BUYER COLLECTS' as an option.


This item is large, heavy and fragile. UK postage, packing and insurance will be £30.


Data, copied from the web:-


The Hallicrafters S-20R Sky Champion was made from 1939-1945 and sold for $49.50, putting it in middle of the company's prewar radio lineup. The entry-level Hallicrafters set for 1939 was the model S-19 Sky Buddy, selling for $29.50. Higher priced prewar models included the SX-24 Skyrider Defiant at $69.50 and the SX-25 Super Defiant at $94.50.


Model S-20R was the first in a long-lived product line. Hallicrafters repackaged essentially the same radio, with minor updates, as models S-40 (1946-1955), S-85 (1955-1959), and S-108 (1959-1961). If you look at the photos of my S-40B, you will quickly see the resemblance.


This is a four-band receiver, covering all of the frequencies from 540 Khz to 44 Mhz. In addition to bandspread tuning, it features AVC (automatic volume control), ANL (automatic noise limiter), BFO (beat frequency oscillator), a three-position tone control, and a headphone jack.


The back panel contains sockets for two optional accessories. One socket is for power, permitting mobile use with batteries (one 6-volt and one 340-volt). The second socket is for an external S-meter to show signal strength while tuning. The S-meter socket came in handy for my magic eye project.


This was a pretty full-featured receiver for the price. The higher-priced SX models added only a few nice-but-not-necessary features: variable selectivity, a crystal filter, calibrated band spread, and a built-in S-meter.


As the following tube lineup shows, the S-20R has an RF amplifier and two stages of IF amplification.

TubeTypeFunction
V16SK7RF amplifier
V26K8Mixer/oscillator
V36SK71st IF amplifier
V46SK72nd IF amplifier
V56SQ72nd detector/AVC/1st audio
V66F6G2nd audio amplifier
V76H6Automatic noise limiter
V86J5GTBeat frequency oscillator
V980Rectifier