[Collins] 32S-3 wire

[Dr. Gerald N. Johnson]

I'd think 22 is a size or two small for that circuit, though the current 
in that wire depends on the external connections. Whether the heaters 
are wired for 6, 12, or 24 volts. There's no current in the wire from 
the back to the tubes for the 12 and 24 volt connections, only in the 6 
volt connection as with the 516F-2.

With modern line voltages a bit higher than when the rig was designed, 
the voltage at the tube sockets may still be over the rated 6.3 volts 
and other than the wire running a little warm there will be no harm. 
Apparent PA tube live might be shorter if the voltage at the PA tubes is 
under 6.3 because as tubes age, low voltage for the heater reduces 
cathode emission so that supplying peak currents gets to be more difficult.

You can check for 6.3 at the 6.3 volt jack on the back, taking care to 
not short it again, if you wired it up. That was probably used for the 
pilot lamp in the 312B with the wattmeter.

While I was at Collins, pilot line girls building small number products 
would often trot over to the warehouse and grab teflon insulated wire to 
use in place of the specified nylon jacketed PVC because while the 
teflon was a bit harder to strip (but not much with an automatic 
stripper) they didn't leave behind burnt insulation when they weren't 
careful enough with a soldering iron.

73, Jerry, K0CQ, Technical Adviser to the Collins Radio Association

On 8/26/2013 8:04 AM, dmurman at verizon.net wrote:
> Thanks Lynn. I had a spool of 22 gauge wire stranded and used that. The original wire I was told was 22 gauge and colors were white/brown/red if I remember correctly. Checked the transmitter on 40 meters and worked flawlessly.
>
>
> David
> WA4ECM
>
> On 08/26/13, kb6oks at juno.com wrote:
>
> David
> I probably have what you need but, it will be with Teflon insulation, silver plated stranded copper. What is the wire size and color stripes? If I have a match I will send you a few feet.
> Lynn WR7G
> ____________________________________________________________
>