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RCA 8R71 AM/FM Tube Radio Restoration

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Uploaded by on May 12, 2010

Restoration of RCA 8R71 Tube Radio AM/FM tube radio. Radio was "re-capped" with 22 new capacitors, 3 power electrolytic capacitors, 1 electrolytic for FM radio detector and 18 poly capacitors.

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Uploader Comments (gmcjetpilot)

  • Is it better to use vintage cloth covered wire or the new plastic-coated type... stranded or solid? What's the typical guage for most replacement wire in old radios?

  • @ZmajSnoshaj

    Wire is wire. You can use modern wire of equiv gage. Most point to point wiring is solid, some bare. I use what I have. If you're going for an original looking restoration, you can buy repro looking wire. Most newer radios (post WWII) have cloth over plastic insulation that's usually OK as is. Power cords always need to be replaced. I use modern cords that look similar to original or you can buy reproduction pwr cords and plugs.

    RadioDaze com

    JustRadios com

    tubesandmore com

  • This is going to sound stupied...but did you have to get a specific size of electrolytic capacitors? I was looking into restoring a 1920's radio..(i know they are years and years different) but I was just curious. :)

  • @fritzerrupp

    What model radio? You will need to replace some or most caps with the same size as was installed (high 200-600 volts). To determine the size you might read it off the capacitor. You can usually find the schematics and parts list, a big help. Web sites have free schematics and parts list. One site is nostalgiaair com. Replace all Electrolytic caps, usually for the power supply. Also replace the non polarized wax paper caps. Just radios com is a good source of caps. Good luck!

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  • I love old radios and that is a fine example of the work they did in the past

    if you don't believe it buy a new radio and see if it can keep up on the am band

    also, sound quality from vacuum tubes and bigger speakers are superb

    I guess the good times are really over for good. everyone needs to save all

    electronics from the past that they can because china cant compete

    in performance new radios are junk

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