View source for SB-22~PT

==Overview==
The SB-22/PT and the SB-22A/PT are tactical, manual switchboards that can be rapidly installed to provide field facilities for interconnecting 12 local-battery telephone circuits, remote controlled radio circuits, or voice frequency (VF) teletypewriter circuits. Two SB-22/PTs may be stacked to provide a 29-circuit capability by removing one TA-221/PT (operator’s pack) and inserting five TA-222/PTs (line packs). Replacing a line pack with a trunk pack permits one-way ring-down, and one-way automatic trunk circuits between the SB-22A/PT and any other switchboard with common-battery signaling. The Tone-Signaling Adapter TA-977/PT provides the operator with a two-wire push-button tone-signaling capability for interfacing automatic switches without operator intervention.

[[File:SB-22.PT.jpg]]


===Technical Characteristics===
:'''Type of Operation'''
::Manual with local battery 
:'''LineCapacity'''
::12
:'''Signaling(Outgoing)'''
::90to100V AC,20Hz
:'''Signaling(Outgoing) with adapter'''
::DTMF
:'''Signaling(Incoming)'''
::90V AC,20Hz
:'''Type of Signal'''
::Audible or visual alarm
:'''Power Requirement:'''
::Operator’s Talking Circuit
:::3 V DC (two BA-30s)
::Night Alarm and Panel Light
:::3 V DC (two BA-30s) 
:'''Weight'''
::15.4kg(34lb)


==Parts Suppliers==
;http://www.signalcenter.com
:Excellent Service and Lots of new parts for the SB-22 (2013)

==PM Magazine==
<gallery widths=150px heights=150px perrow=4>
File:PM_Magazine_January_2005_SB-22.png|PM_Magazine January 2005
</gallery>

==Related Files==
;{{pdf|TM_11-5805-262-12.pdf|TM 11-5805-262-12}}
:OPERATOR’S AND UNIT MAINTENANCE MANUAL
::SWITCHBOARDS, TELEPHONE, MANUAL
::SB-22/PT (NSN 5805-00-257-3602)
::SB-22A/PT (NSN 5805-00-715-6171) 
:: INCLUDING TONE SIGNALING ADAPTER 
::TA-977/PT (NSN 5805-01-040-9653))
::15 June 1990


;{{pdf|TM_11-5805-262-20P.pdf|TM 11-5805-262-20P}}
:ORGANIZATIONAL MAINTENANCE REPAIR PARTS AND SPECIAL TOOLS LISTS FOR
::SWITCHBOARDS, TELEPHONE, MANUAL 
::SB-22/PT (NSN 5805-00-257-3602)
::SB-22A/PT (NSN 5805-00-715-6171)
::May 1978


;{{pdf|TM_11-5805-262-34.pdf|TM 11-5805-262-34}}
:DIRECT SUPPORT AND GENERAL SUPPORT MAINTENANCE MANUAL
::SWITCHBOARDS, TELEPHONE, MANUAL 
::SB-22/PT (NSN 5805-00-257-3602)
::SB-22A/PT (NSN 5805-00-715-6171)
::28 September 1983


;{{pdf|TM_11-5805-262-34P.pdf|TM 11-5805-262-34P}}
:DIRECT SUPPORT AND GENERAL SUPPORT MAINTENANCE REPAIR PARTS AND 
:SPECIAL TOOLS LISTS (INCLUDING DEPOT MAINTENANCE REPAIR PARTS AND SPECIAL TOOLS)
:SWITCHBOARDS, TELEPHONE, MANUAL 
::SB-22/PT (NSN 5805-00-257-3602)
::SB-22A/PT (NSN 5805-00-715-6171)
::May 1978


;{{pdf|TM_11-5805-262-35.pdf|TM 11-5805-262-35}}
:FIELD AND DEPOT MAINTENANCE MANUAL 
:SWITCHBOARDS, TELEPHONE
::SB-22/PT
::SB-22A/PT
::17 February 1961


;{{pdf|PM_Magazine_August_2002_SB-22_Battery_Compartment_Parts.pdf|PM Magazine August 2002 SB-22 Battery Compartment Parts}}


;{{pdf|TC_24-3_Radio_Wire_Integration.pdf|TC 24-3}}
:Radio Wire Integration
::Installation and Operation Tips
::Users Guide
::30 November 1976


[[Category:Military/Field Phones]]
{{DISPLAYTITLE:SB-22/PT}}