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Sidewinder 350 / sd1076 transistors

Discussion in 'Amplifiers' started by DR456, Jun 25, 2018.

  1. DR456

    DR456 Member

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    Any information on the sidewinder 350 would be great. Also need the transistor rating specifications. Take a look at it. Looks like it got pretty hot..


     

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  2. nomadradio

    nomadradio Analog Retentive

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    The logo "SSS" on the transistors is the manufacturer. Can't even remember the name it stood for, Solid State Systems, or something like that. Wikipedia never heard of them.

    They got bought in the early 80s, but I can't remember by whom. S-T Semi, who still uses the "SD" prefix for RF transistors doesn't make that number now.

    The online sources only show this number indirectly as a cross reference, but no data for it.

    Don't ever remember seeing any info for a Hayden amplifier.

    It's an orphan.

    73
     
  3. DR456

    DR456 Member

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    Hey Nomad. I found a broken wire at the hi / low switch resistor. Replaced the led's. Fired her up 2 watts swinging 18 pep going in. 50 watt dead key swinging 350 pep out. They call it a 350. I guess she's working properly. Open to suggestions on how many watts it should do.
     
  4. rabbiporkchop

    rabbiporkchop Well-Known Member

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    70 watt RF output @ 5 watt RF input per transistor. Driving it at 100% modulation would work much nicer than 300% though.
     
  5. 357

    357 Walkin' the dog

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