[ARC5] A little off topic, BC-348 dynamotors

[WA5CAB--- via ARC5]

For the record, the TCS receiver B- is not isolated from chassis.  However, 
the TCS 12 volt receiver dynamotors themselves have the B- brush isolated 
from the dynamotor frame.  B- goes to ground at the terminal strip that the 
four dynamotor leads terminate at.  And, not that it's a of major 
significance as you can't see the dynamotor without pulling the receiver panel and 
chassis out of the cabinet, the TCS receiver dynamotor is about the same 
physical size as the original BC-224 machine.  The TCS receiver dynamotors are more 
plentiful.  Please don't trash any DM-34's if you need to build a DM-24.  
They have gotten to be in short supply.  I'll trade you a TCS receiver 
dynamotor in good condition for a DM-34.  DM-36's are in short supply, too, as are 
DM-35's and 37's.  But I don't have anything equivalent to to trade for 
them

BTW, the Google find may have been originated by me.  I used to have a 
bazillion DM-36's.  Times change.

In a message dated 09/05/2014 11:39:26 AM Central Daylight Time, 
arc5 at mailman.qth.net writes: 
> At least it's related....
> 
> Was looking on Google for something else BC-348 related earlier, and ran 
> across an old posting to this list about substituting the DM-36 dynamotor in 
> the BC-348.
> 
> Perfectly true!  But let's take it a step further.
> 
> There was also mention of using a TCS receiver dynamotor in a BC-224.  I 
> haven't checked the TCS manual to see if the B minus lead on that machine 
> really is isolated from ground, as it would have to be for use in a BC-224; 
> however, I know that the DM-34 dynamotor does indeed have the isolated B 
> minus. 
> 
> The DM-34 is the 12-14 volt equivalent of the DM-36.  Both the DM-34 and 
> 36 are from the BC-603 and BC-683 tank receivers.
> 
> I have a DM-34 on a DM-28 base, ready to install into my BC-224 as soon as 
> I remove a few mods that Alexandre Dumas(s) put into the radio....
> 
> 73
> 
> Mike
> WA4DLF

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