[Elecraft] Rear Panel mic connection

[Don Wilhelm]

I have never heard of any such problem with using the rear panel mic and 
phone jacks.  A statement like that would make me wonder about the 
construction and quality of the headset.
K9YC would say that there is a 'pin 1' problem with the rear jacks, but 
that same 'pin 1 problem' exists on the front panel mic jack as well 
because the jacks are grounded to the board but not to the enclosure.

73,
Don W3FPR

On 5/19/2015 5:21 AM, Frank via Elecraft wrote:
> I recall Eric mentioning an advantage to connecting the headset boom mic to the rear panel headphone and mic connectors.  The manufacturer of the headset advised this was not preferable due to the potential for ground loops on the mic side.  Has anyone had any experience with ground loops on the mic from headsets connected to the rear jacks?  I'd love to use them to free up the front of the rig.
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