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  1. I

    Amateur Radio Band chart

    after the change in license from 5 to 3 types has there been any change in the amateur radio band chart.if so what frequencies can a tech use.ssb or am.i have the older chart but need an update.thanks
  2. I

    D&A transformer

    i have a old D&A Maverick 4 driving 4,just wondering what voltage is on the transformers.how close are they to what i need to build a amp with 811a tubes in it.the D&A isn't working to test the voltage.thanks
  3. I

    dosy schematic

    i have a dosy (tc-4002-sw)need a schematic,mod doesnt work at all.everything else works good.thanks
  4. I

    will one of these work on 10 meters.

    i have a jb2000 (10-80 meter),750 maco,200 maco,and a jb12,is any of these built for 10 meters.if not can they be upgraded to use on 10 meters.
  5. I

    hw100 mike wiring

    heathkit hw100 looks different where mike plugs in.looks like a two wire of some kind.what did the mike plugin look like and how many wires does it use.also need wiring digram.
  6. I

    750 maco

    the 750 maco has 1 (8950) driving 2 (6KN6) driving 6 (8950) one of the 6KN6 tubes is bad,should i replace with same or put 8950s back in there place.it would have to have the voltage changed back to the 8950 voltage.would it be worth the change.
  7. I

    maco 200 capacitor replace

    maco 200 has 2 (450WV - 120MFD) capacitors.rfparts has (100mFD and 160MFD,450WV)will any of these replace the ones in the maco.
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