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
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
On Mon,9/14/2015 10:25 AM, Don Wilhelm wrote:
I would preserve the balanced configuration through your switchbox and
only connect the mic low to ground at each radio's plug.
As usual, we agree. :)
73, Jim K9YC
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Elecraft mailing
On 9/14/2015 1:25 PM, Don Wilhelm wrote:
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.
*Absolutely* ... connect the *shield* of the XLR cable to chassis and
switch both mic + and mic - carrying
On Mon,9/14/2015 10:12 AM, 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 (+)
Maintain the signal path integrity all the way through the switching
arrangement. That means 3 poles to switch from the XLR input to the 8
pin Foster connectors. Keep all away from chassis ground. If you
believe the box should be grounded, I suggest doing so at the input XLR
pin #1 to
I agree with Don as well here. I use a Behringer Shark DSP110 which has both
balanced XLR and 1/4 inch mono inputs and outputs that can be set to line or
mic levels. It also provides a noise gate and mic gain if you need it. You
can stay balanced as far as you want. It was ~$50 used.
Brian
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