[Milsurplus] ? re dynamotor from DY-88

[Kenneth G. Gordon]

On 11 Feb 2021 at 20:47, Hubert Miller wrote:

> I found in my stuff a dynamotor for the DY-88 of GRC-9. I wanted to
> check it out somewhat before selling, just to verify not DOA. This is a
> 6, 12, or 24 volt dynamotor. I measured 3 wires to fat ground wire as
> 8, 30, and 80 ohms.   The HV winding was 580 ohm to dynamotor frame. Do
> these sound about right?

Yes.

> I hooked a 12V batt to the 24 winding and it
> did spin. I only let it spin up a few seconds as I'm sure it needs
> relube. The thing looks RFE, not new spare, but I can't imagine why
> someone would remove a dynamotor from a working unit. tnx, Hue Miller 

Me either. Maybe the original owner had some plan for it.

I have a complete DY-88 unit here. Even the vibrator still works fine. I fire it up once in awhile 
simply to listen to it. To me, it sounds very musically beautiful. Somewhat like the note A of a 
bagpipe. Gorgeous.

I plan to adapt it via some sort of interface box to use it with my AN/GRC-109.

Which reminds me: I should put the '109 back on the air. I used it for some time and worked 
35 countries, mostly on 40 meters, with it and an end-fed wire. Crystal control was far less of 
a problem than I had at first thought it might be. And its 15 watts didn't seem to make it 
particularly difficult to work those DX stations with either.

Ken W7EKB