Dale,

 

To get you going until you can find a DM-24, you could build a replacement using a DM-34.  I built a DM-28 replacement using a DM-36 to use until I was able to obtain a DM-28 for my BC-348.  Attached is a dimensioned drawing of the mounting plate I made from a piece of the front panel of a 2U rack mount cabinet.  A stiff sheet metal plate would suffice also.

 

Sean W0KPX

 

-----Original Message-----
From: "Dale LeStourgeon" <dlestourgeon@cox.net>
Sent: Monday, August 12, 2024 8:14pm
To: "Milsurplus Listserv" <milsurplus@mailman.qth.net>
Subject: [Milsurplus] BC-224C

Thanks to Al, Hue, Paul, Ray, et al for help with my BC-224C. After I cleaned it up, cleared corrosion and mold, I found it to be completely as issued; only missing dynamotor. No holes, wiring changes etc. When connected to external power, radio works fine. Amazing considering time and abusive storage conditions. My plan is to run it on 12V as intended..keep original.
Many attempts with inverters, even with herioc filtering efforts proved hopeless (47kc images everywhere). Then Ray advised to use a low freq inverter. I built this with different transformers filters and can not seem to get rid of square wave residue. I'm considering trying to emulate old car radio concept with tuned choke after vibrator before transformer and 100% shielding.
Yes I can put in a 120v power supply like most of the BC-348s but hate to.
So, can this group tell me if there is any hope for finding a DM-24 dynamotor? I have never seen one or noted one for sale.
Thanks,
Dale K5AJZ