Dan,
Jim Brown K9YC or Joe W4TV would be a better resource than I am, but if
it were mine, I would preserve the balanced configuration through your
switchbox and only connect the mic low to ground at each radio's plug.
73,
Don W3FPR
On 9/14/2015 1:12 PM, Dan Atchison via Elecraft wrote:
I am building a switchbox to allow use of a Heil PR-781 microphone to
be used by my K3S and K3, the switchbox using XLR connectors. I note
that in the Heil XLR cable ended in an 8-Pin Foster has mic low (-)
tied to ground and (+) tied to mic high.
Knowing that the XLR pin 1 should be chassis ground, my question is,
"At the switchbox, should I tie XLR pins 1 and 2 together and only
switch XLR pin 3 between radios?" IOW, should XLR pins 1 and 2 be
chassis grounded or should I chassis ground pin 1 and switch both XLR
pins 2 and 3?
______________________________________________________________
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:[email protected]
This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
Message delivered to [email protected]
