HISTORY:
In a previous life I collected radio equipment, even very early AM Citizen Band equipment. HF frequencies were always of interest, particularly with phenomenons such as "skip" allowing communications over great distances with very low power, when the conditions were "right"
I believe some "diehards" still like to play around on HF AM (not SSB) and read somewhere that truckies occasionally use this mode of communications.
This power//speaker connector was for use with some of my old equipment (most of the equipment has now left home and now lives in another person's shack) ... these plugs are very difficult to find now, I think they were propriety in design.
POWER - SPEAKER 4 WAY PLUG
Circa 1970's
3x bullet male pins and 1x female bullet socket in a straight line
Ex communications transceiver ... I cannot remember which manufacturer used these though! Could have been some Radio Shack (Tandy) gear but ...
Quite different to the "usual" transceiver rear connections, having 4 pins in a row, 3 being male and 1 is female, this provides a "keyed" plugs.
The two outer connectors are for the DC supply input
The two inner connectors are for the transceiver external loudspeaker, currently these two pins are "strapped" together i.e no external loudspeaker
All bullet pins are quite robust and large gauge although the current is going to be limited by the lead which is attached to this plug
The two wire lead (supplied as shown) is 1.5m in length and has bare wires at the distant end
The plug has a soft feeling plastic body or perhaps it is rubber - there are absolutely no makers identification markings on this plug - simply stamped + & -
For the life of my I cannot figure out how to get INSIDE the plug (to attach a heavier gauge lead for example) as it appears to be a seamless moulding.
COSMETIC CONDITION:
USED but clean
NO damage to the plug
NO damage to the lead
