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Six used Affordable HF Amplifiers worth Considering

Discussion in 'Amateur Radio Amplifiers' started by N8FVJ, May 19, 2019.

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  1. WD4IGX

    WD4IGX Premium Subscriber QRZ Page

    There is no such thing as a piece of gear as complex as an amp, or more complex than maybe a claw hammer, that "does not fail" as in ever. For that matter I'm sure many claw hammers have separated from the shaft or had the shaft break or....
  2. N8FVJ

    N8FVJ Ham Member QRZ Page

    It is a failure ham radio operators may not have the skills to repair. I cannot recommend an item needing a known repair issue- simple..
  3. N8FVJ

    N8FVJ Ham Member QRZ Page

    Another Kenwood TL-922 issue reported here on QRZ.

    The "self bias" modification reconfigures the bias switching so that, in the event of a tube grid-cathode short, the cutoff bias source is not shorted. This prevents the 80V bias winding on T2 from being blown open. Jim @W7RY had me add it to the TL-922 schematic that I redrew.
    K0UO likes this.

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