Odd Buzzing on 867.3875 in Castle Rock

[ffhfan]

Anyone noticing buzzing on freq. 867.3875 in the South Denver area? Here at I-25 and Castle Pines Pkwy I am picking up buzzing either just before, during or after the control takes a TG to 867.3875 off the Castle Rock tower (tower 103). This is on my PRO96.

I ran the freq. in Colorado and came up with:

DOUGLAS, COUNTY OF WPLW647 Active CO DOUGLAS YF
DOUGLAS, COUNTY OF WPLW647 Active CO CASTLE ROCK DOUGLAS YF
COLORADO, STATE OF WPXC444 Active CO FAIRPLAY PARK YF
COLORADO, STATE OF WQAY630 Active CO ALAMOSA ALAMOSA YF

The buzzing sounds like an EDACS (like when a Uniden radio is trunking an EDACS and hangs up and buzzes).

Confused...

 

[ffhfan]

Well, the buzzing is still there (you can hear it occasionally when the squelch is turned down) in conventional mode.

The buzzing is no longer interrupting the trunking process now.

Must have been atmospheric conditions that night.