[Milsurplus] Dynamotor needs

Ray Fantini RAFANTINI at salisbury.edu
Thu Jan 7 09:52:41 EST 2021


Don't know if it's the same as a DM-24 but I have a Dyno that came out of my MAK project that is 12 volt input and 500 volt output that's excess to my needs. You can have it for $20 plus the cost of shipping. Its dirty but works.
I replaced all the dynamotors in the MAK power supply because the vibrator power supply for the 250 volt receiver B+ was missing and a lot of the other stuff had been hacked so ended up using the chassis and box and installed a solid state power supply built from a Heathkit HP-13 solid state power supply that allows the radio to run from 12 volts at a fraction of what the original power supply did.
Think I am running just under three amps drain on receive, six or eight amps in transmit standby and around ten or twelve in transmit. Not bad for a WW2 vacuum tube transceiver, think it had something like a sixty or fifty amp fuse for use with the original system that had a vibrator for the receiver B+ and the dynamotor for the PA/Modulator.

Ray F/KA3EKH

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