[FedCom] 173 Mhz - Boston MA area

[hithel]

Recently heard in the Boston MA area -

173.4125 - digital (P25) radio traffic - loud -
probably from Hanscom AFB in Bedford MA which is
approx 10 miles from me - probably a repeater - I was
told that the traffic concerned a bus (or van) making
pickups at various locations - I am not sure if this
freq is used continuously, or just on special
occasions

173.5125 - this morning, there was some weak digital
(?P25?) radio traffic on 173.5125 - this was formerly
the ambulance frequency at Hanscom AFB - Hanscom
discontinued their base ambulance around 2003 - they
contracted for coverage from the local Armstrong
Ambulance Service

173.5875 - every morning there are trains of DTMF
signals on this freq at 8AM - approximately 5 sets - I
think it is Hanscom AFB Fire Dept testing the 'Knox
boxes' in their vehicles - 'Knox boxes' are small
safes that contain keys - the boxes are opened by
radio signals - I think that Hanscom AFB also uses
173.5875 in repeater mode as their "Tac" channel -
"Chief 1" was once heard on 173.5875R in analog mode
referencing the channel as "Tac" - anybody know the
input freq?

166.225R - reportedly is Hanscom FD primary channel -
anyone know the input freq? - maybe 163.5375 (the
previous FD freq) - nowadays, 166.225R is always
digital

173.5625R - reportedly is Hanscom AFB security -
anyone know the input freq?

Anyone know any other freqs for Hanscom AFB? DPW used
to be at 148 Mhz I think.

Hanscom AFB does not have any military aircraft
assigned. The base primarily coordinates electronic
research. MIT Lincoln Labs is located at the SW corner
of the base. I think their security is at 148.225R
(last logged in 1997)

169.0125R might be a Hanscom AFB freq.

Peter S

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