[ARC5] Them Dynamotors

[Al Klase]

On 7/6/2024 3:26 PM, scottjohnson1 at cox.net wrote:
>
> A 12V BC-348 is a BC-224.
>
> Scott W7SVJ
>
Gang,

And, if want o see and hear one, go to my AN/AMT-3 page 
<http://www.skywaves.ar88.net/sonde/> and scroll down to "On the Air."

73,
AL - N3FRQ
>
> *From:*arc5-bounces at mailman.qth.net <arc5-bounces at mailman.qth.net> *On 
> Behalf Of *J Mcvey via ARC5
> *Sent:* Saturday, July 6, 2024 11:12
> *To:* arc5 at mailman.qth.net; releazer at earthlink.net
> *Subject:* Re: [ARC5] Them Dynamotors
>
> Perhaps there was or was intended to have a 12 volt option for the 
> BC348?  The BC603 from the SCR 508 family has a 12/24 option. All the 
> tech has to do was install the dynanmotor  for the required voltage 
> and the filaments were rewired internally via the dynamotor assembly  .
>
> On Saturday, July 6, 2024 at 09:40:15 AM EDT, <releazer at earthlink.net> 
> wrote:
>
> I have been working on a BC-348-N, restoring it to original 
> configuration.  I have a DM-36 24VDC 220VDC dynamotor and an actual 
> BC-348 dynamotor base to power it and have wound the required filter 
> coils. The most challenging aspect has been rewiring the tube filament 
> strings and installing the missing resistors in those circuits.  I 
> could not figure out why a 28 VDC input did not make it to the 
> filament string.  Then I realized that the 28VDC power runs Through 
> The Dynamotor Pack, a jumper between two terminals.  I have no idea 
> why they did it that way; perhaps it would make substituting an AC 
> power supply easier?
>
> Wayne
>
> WB5WSV
>
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-- 
ARK Sig Block Al Klase - N3FRQ
Jersey City, NJ
http://www.skywaves.ar88.net/
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