If ever you've come across original phone jacks from before ~1960,
you've seen hardware that still works into its 7th+ decade.
These incorporated ring terminals and threaded machine screws
with lock washers, internally.
You can make anything in a shoddy manner. Price rules.
Largest source of failure in current product - even molded
assemblies, involves lousy strain relief and physical manhandling.
On Wednesday, July 21, 2021 at 7:59:34 AM UTC-4, legg wrote:These saw heavy use in telephone service and on military radios without failures. If left unused for a long time, you had to use metal polish to remove the oxide, but daily use prevented any buildup.
If ever you've come across original phone jacks from before ~1960,
you've seen hardware that still works into its 7th+ decade.
These incorporated ring terminals and threaded machine screws
with lock washers, internally.
You can make anything in a shoddy manner. Price rules.
Largest source of failure in current product - even molded
assemblies, involves lousy strain relief and physical manhandling.
I always used Switchcraft. I've had idiots drive over their inline 1/4" plugs and jacks while mated. The only damages was a few scratches on the body. I still have a few NOS WWII surplus telephone switchboard plugs that were made from unplated brass
https://www.digikey.com/en/products/detail/switchcraft-inc/280F/7672094 has a flexible strain relief, instead of just a clamp like the one to OP listed.
Thanks for the details about the Switchcraft plug. I think it's worth a couple of extra bucks to get a part that will stand up to some heavy use
and some rough handling too.
On 8/6/2021 5:22 PM, Michael Terrell wrote:These saw heavy use in telephone service and on military radios without failures. If left unused for a long time, you had to use metal polish to remove the oxide, but daily use prevented any buildup.
On Wednesday, July 21, 2021 at 7:59:34 AM UTC-4, legg wrote:
If ever you've come across original phone jacks from before ~1960,
you've seen hardware that still works into its 7th+ decade.
These incorporated ring terminals and threaded machine screws
with lock washers, internally.
You can make anything in a shoddy manner. Price rules.
Largest source of failure in current product - even molded
assemblies, involves lousy strain relief and physical manhandling.
I always used Switchcraft. I've had idiots drive over their inline 1/4" plugs and jacks while mated. The only damages was a few scratches on the body. I still have a few NOS WWII surplus telephone switchboard plugs that were made from unplated brass
https://www.digikey.com/en/products/detail/switchcraft-inc/280F/7672094 has a flexible strain relief, instead of just a clamp like the one to OP listed.
Hi Michael,
Thanks for the details about the Switchcraft plug. I think it's worth a couple of extra bucks to get a part that will stand up to some heavy use
and some rough handling too.
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