Hmmm ... not quite true. Well, actually not even close. For those who
did not experience the middle of the 20th century and in the interest of
historical accuracy:
Cinch-Jones connectors were popular back then because they came in a
variety of conductor numbers and were easy to assemble and solder, being
big enough [in contrast to the abomination known as DIN connectors which
came along later]. C-J connectors are square or rectangular, the "pins"
are blade-like [see current day automobile fuses] with a self-wiping
action on insertion, and they had a clamp device on the cable side that
would grip the cable outer sheath. They had the disadvantage that they
could be pulled apart fairly easily. I'm sure they're still around, I
just haven't seen one in a few years.
The RCA "Phono" connector accommodates two conductors, one of which is a
chassis connection [or should be, see k9yc.com/groundingandbonding.pdf]
I believe they appeared on the scene at the beginning of the "High
Fidelity Component Era" about the time 45 and 33 1/3 RPM records
appeared and were used for the audio paths between the various
components of a hi-fi system. They are small, round, and you can
increase the tightness of the shield connection by squeezing it
slightly. My K3 has one on the back which supplies power to the P3.
Nearly every TV sold at RC Willey, Best Buy, Frye's, Walmart, and Costco
has a set of them for video and audio connection. I like most folks
have a dozen or so of the cables that come with those TV's out in the
garage that are excess to our needs.
73,
Fred ["Skip"] K6DGW
Sparks NV DM09dn
Washoe County
On 4/18/2019 1:55 AM, Bob DeHaney wrote:
They’re not long gone, nowadays they call them Cinch connectors. Not only Hams
use them but most AVR and Stereo manufacturers. Take a look at a High End
HI-FI or AVR rear side.
Vy 73 de Bob DJ0RD/WU5T
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