[ARC5] WWII aircraft microphone and audio circuit wiring question

[Mike Hanz]

On 10/1/2011 1:34 PM, jcoward5452 at aol.com wrote:
> Thanks for the replies Gentlemen,
>  Next question: How was the shielding "dressed" at the connectors? 
> What I've seen is a wire soldered to the shield and then backed out of 
> the shell and secured to a screw of the cable clamp useing a crimped 
> lug. How might this be done with "A.R.C." type connectors with the 
> wire loom?

A shield is normally connected to a pin inside the connector that 
represents ground potential, Jay.  It is generally poor practice to rely 
on the connector nut to complete an official ground connection.  What 
you mention on the typical AN/MS connectors is usually done to make sure 
the shield includes the connector itself (in addition to being fed 
through one of the pins.)  That way, any corrosion at the nut's 
interface with threads or connector body can't cause the connector body 
to become "radiant" from an RF standpoint.  In the ARC connectors, the 
#2-56 flat head screw that holds the backshell onto the insert threads 
directly into the pin that represents circuit ground, so the extra step 
isn't needed.

73,
Mike