The frequency in question is 139.7125 MHz [analog FM] and I can monitor it in Maricopa County. It is not monitorable in Yavapai County near Mingus Mountain.
The DB says it is based at Childs Mountain, near Ajo and at Mount Elden, near Flagstaff, and RR members report that it was inactive about a decade ago based on earlier posts in the AZ forum. Now, it sounds as if the frequency is acting as an in-flight notification/FBO style of operations: personnel 'checking in at Nogales', 'flight time of 75 minutes', 'en route', etc. The sound quality isn't clear and I was wondering if anyone in Arizona has been able to pick it up with more clarity.
The DB says it is based at Childs Mountain, near Ajo and at Mount Elden, near Flagstaff, and RR members report that it was inactive about a decade ago based on earlier posts in the AZ forum. Now, it sounds as if the frequency is acting as an in-flight notification/FBO style of operations: personnel 'checking in at Nogales', 'flight time of 75 minutes', 'en route', etc. The sound quality isn't clear and I was wondering if anyone in Arizona has been able to pick it up with more clarity.
