[Radioddity (GM-30) buzzing when I press PTT]

I gave it a shot on different channels, power levels and distances...same issue.  I'll email Radioddity support.  The box was damaged and the interior packaging was a little off so I'm wondering if this was a previously returned item.  Thanks for the quick response.  Enjoy your evening.

[Radioddity (GM-30) buzzing when I press PTT]

Good afternoon,

I'm new to GMRS (and radios) so hoping this is an easy fix.  I recently purchased a pair of GM-30s, received today, assembled and fully charged both.  However, one of the radios (A) buzzes when I press the other radio's (B) PTT.  Initally, I thought the radios were too close but, going the other way (A to B), the transmission is loud and clear. 

I thought it could be the firmware but they're both running V06.03.009 which looks to be the most recent version. 

Any guidance would be appreciated.

Thanks,

Vince