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  1. I

    Amateur Radio Band chart

    this is the one i have.i use google to.thanks
  2. 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
  3. I

    D&A transformer

    i have another case its bigger but i will have to lay the 811'S on the side.ill look for another tune cap.thanks.
  4. I

    D&A transformer

    can i use any other parts out of the D&A,i also need a case,the case i have is to small for the 811a's.any places to order large cases.thanks
  5. I

    D&A transformer

    i have 2 transformers out of the D&A,was thinking about using 4 811a tubes.this should make a good little amp.don't know if i can use anymore of the parts from the D&A.thanks
  6. 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
  7. I

    dosy schematic

    was using ohm setting on meter.now on the diode setting all is ok but d9,it shows 0's in both directions.
  8. I

    dosy schematic

    check them in meter or remove them.in the meter they are open in both directions.
  9. I

    will one of these work on 10 meters.

    this jb2000 doesn't have a place for a driver tube,i'm guessing its a high drive.it does have a band switch.10 to 80 meters.someone did some bad soldering in it,need to replace some wire to make it look better.already put a good power cord on it.fix it or buy a sb-220,think ill work on it some...
  10. I

    dosy schematic

    i have a dosy (tc-4002-sw)need a schematic,mod doesnt work at all.everything else works good.thanks
  11. 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.
  12. I

    750 maco

    thanks for the help,i havn't used this amp in a few years,8 maybe.but i put new caps in it just before i stored it.i used a cobra 1000 with variable watts.
  13. 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.
  14. 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.
  15. I

    maco 200 capacitor replace

    no resisters on capacitors,this maco has low and hi.it has a wire between the capacitors,the other wire uses both capacitors.both wires go to low/hi switch.
  16. I

    maco 200 capacitor replace

    connected in series.
  17. I

    maco 200 capacitor replace

    reason for replacing them is because it hasn't been used for about 15 years and when it is keyed and turn the tune it blows the fuse,with or without the tubes in it.i tested the rectifiers and they test good so it must be the capacitors,but ill replace the rectifiers to.thank you.
  18. 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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