[FedCom] US Postal Service Additional Frequencies in Use?

[Ken]

Last evening (5/13/07) before going to bed I had the BC296D (with Grove's 
Telescoping antenna extended to approx 11 inches) in the federal frequencies 
range search mode (2300 to 2400 hrs local) and discovered the following 
frequencies in use which I believe are located in the US Postal Sorting 
Facility, junction of Worcester St (route 141) Fiberloid St, Springfield MA.

406.5375 Repeater (CTCSS 173.8)  Appeared to be Management/Supervisory 
Coordination
407.9375 Repeater (CTCSS 173.8)  Sorting Machine Maintenance 
Dispatch/Operations
408.1375 Repeater (CTCSS 173.8)  Transportation, trailer switching to 
loading docks?

I wasn't able to confirm that the above or the frequencies below (which have 
been reported before) may have been cross band repeaters.  I would assume 
that UHF radios are being used within the facility rather than VHF, so now 
the mystery is why the potential cross band operation?

164.3875 Repeater (110.9) Sorting Machine Maintenance  (very active)
165.0500 Repeater (114.8)  Management/Superivsory Coordination, Hazmat 
Response Team  (very active)
166.1625 Repeater (114.8)  Mail Transportation (area wide) (occassionally 
active)
172.30 Simplex (94.8), Trailer Switching in Yard (not monitored last 
evening) (usually very active)

Grove Enteprise's "Federal Frequency Directory" 2nd edition was consulted 
and indicated:
406.5375 was not listed as a USPS assignment
407.9375 was listed as a "spectrum hole", so at least locally it's a US 
Postal Service assignment.
408.1375 was listed as a "spectrum hole", so at least locally it's a US 
Postal Service assignment.

For those of you that travel in that area (including getting off or 
traveling  by the Mass Turnpike (Interstate 90) at Exit 6 
(Springfield/Chicopee), Interstate 291 (BTW I've actually gotten "Signal 
Stalker" hits on the VHF freqs with the RS Pro 83 just sitting in my 
vehicle's beverage cup holder), please monitor those frequencies to confirm 
use at that location.

Thanks

Ken