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TA-222/PT Magneto Signal Line Drop (SB-22/PT Switchboard linepack)
U.S. Army Soldier operating a SB-22/PT switchboard in a tactical field environment.
Magazine Advertisement from Pacific Tube Company in Los Angeles, Ca.
U.S. Army Photograph
Below are images of the "electronic-magneto" TA-222/PT Linepack Signal Drop, as a integral component of the SB-22/PT Switchboard. I haven't found a linepack that incorporated a Magneto- Signal Drop identified from this "Pacific Tube Company;" however, the component is stamped "North," as clearly depicted in the photograph below. So, it may be now by manufactured by the same company that produced the switchboard back then: "North Electric Manufacturing Company" I'm sure other companies produce these now. I have a current SB-22/PT Switchboard composed of a fiber glass case enclosure. I plan to look at the internal components of one of the linepacks to see manufacture markings -- does anyone out there care (euphemistic word for a better phrase that ends in s..t)?
