[Boatanchors] Drake vs National Power Supply Pinouts?

[manualman at juno.com]

Be aware that there were two power supply/spk units used in the NCX
series that looked identical from the exterior. They were the NCX-A and
the NCX AC 500. The HV output on the NCX-A was 700 volts; on the NCX
AC-500, 1100 volts.

Pete, wa2cwa

On Tue, 17 May 2016 18:21:55 -0500 D C _Mac_ Macdonald
<k2gkk at hotmail.com> writes:
> 
> 
> Yes, the connectors are the same, BUT, wiring is probably different. 
> 
>  
> The National NCX-A supply and speaker is a stout unit. 
>  
> Get a repro manual for it on eBay:    
> http://www.ebay.com/itm/152093398221
>  
> Compare that with the Drake AC-4 wiring and rewire accordingly! 
>  
> * * * * * * * * * * * 
> * 73 - Mac, K2GKK/5 * 
> * (Since 30 Nov 53) * 
> * Oklahoma City, OK * 
> * USAF, Ret'd 61-81 * 
> ** FAA, Ret'd 94-10 * 
> * * * * * * * * * * * 
> > > Date: Tue, 17 May 2016 15:16:24 +0000
> > To: boatanchors at mailman.qth.net; forsale-swap at mailman.qth.net
> > Subject: [Boatanchors] Drake vs National Power Supply Pinouts?
> > From: boatanchors at mailman.qth.net
> > 
> > I picked up a National power supply at the Cuyahoga Falls Hamfest. 
> It's a blue-cased one with a shiny front, quite large actually. I 
> noticed that the power plug is the same one used by Drake (for stuff 
> like the B line and TR-4 line) with six pins one direction and six 
> more at right angles, in a rectangular overall shape. 
> > I assume this is pure coincidence? No chance the pinouts would be 
> the same between the two brands? Maybe like we have today with Icom, 
> Kenwood and Yaesu all using that same power connector and all wired 
> for 12VDC the same way so the power cords are interchangeable.
> > Any thoughts?73 de N3RHT