Hi Mike; I have a Heathkit DX-100B. The plate meter is across a .1 ohm resistor from the center tap of the HV transformer to ground. This should serve your needs. Good luck.
73, Ed Richards K6UUZ On Mon, 3 Jan 2005 12:43:25 -0600 "Mike Duke, K5XU" <[EMAIL PROTECTED]> writes: > K4KYV wrote: > > "In my homebrew rigs with triode finals, I place the plate meters > between > the > common point for grid leak/bias supply and PA filament, and ground. > The > Gates BC1-T does it the same way, with no HV on the meter." > > > I've been reading the discussion of safe metering with great > interest, as > perhaps explained by my subject line and signature. > > I would love to find a good plate modulated transmitter in the power > class > of a DX100 or Valiant, in which the plate meter would not have the > full > plate voltage across its terminals. Is anyone aware of a commercial > or > surplus transmitter with this design feature? > > I could easily and safely tune such a transmitter by connecting an > audible > meter-reading device across the meter terminals. I still have the > circuit > which I used successfully with a DX60, and very cautiously with a > Viking > Ranger from 1969 - 1974. I learned quickly that the ranger meter is > at full > plate potential. The good news is that I lived to tell about the > experience. > > I also recall reading somewhere of using a voltage divider in order > to > obtain a safe potential level in the external audible reader. If > anyone on > this list has ever encountered a transmitter which was modified in > this way, > I'd like to know more about how it was done, since I'd love to put a > Ranger > on the air in order to re-create my first station. > > The point can be made that the easiest route is to put a rice box > and linear > combination on the air. Yes, that would be the easiest thing for > anyone, > but, not nearly as much fun! > > > Mike Duke, K5XU > American Council of Blind Radio Amateurs > > > > > > -- > No virus found in this outgoing message. > Checked by AVG Anti-Virus. > Version: 7.0.298 / Virus Database: 265.6.7 - Release Date: > 12/30/2004 > > ______________________________________________________________ > AMRadio mailing list > Home: http://mailman.qth.net/mailman/listinfo/amradio > Help: http://mailman.qth.net/mmfaq.html > Post: mailto:[email protected] >
