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Radio Shack telephone tester on eBay

Started by Jim Stettler, April 06, 2020, 06:25:03 PM

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Jim Stettler


Radio shack telephone tester just listed for $109.99 BIN (not mine.)
These are a lot like a BK Precision 1045 tester. Many of the RS testers were used in the radio shack stores and can be well used

https://www.ebay.com/itm/Vintage-Radio-Shack-RS-Telephone-Tester-With-Owners-Manual/333568594246

You live, You learn,
You die, you forget it all.

RB

Wow! A ride in the Wayback machine ;D cool!  :)

FABphones

Screenshot of above eBay listing.
A collector of  'Monochrome Phones with Sepia Tones'   ...and a Duck!
***********
Vintage Phones - 10% man made, 90% Tribble
*************

zenithchromacolor

I have one of those that I got at an estate sale years ago. It is pretty useful, especially as landline home telephone service goes away. The big cabinet is mostly empty space to display the diagram. Mine appears to be a "well used" example, one of the membrane buttons is very worn and gets stuck in that function.

allnumbedup

This RS tester is available on FB market place at a great price today (not mine):

https://www.facebook.com/marketplace/item/188688696459617

I use mine all the time. I would like to take it to an outdoor festival with no  AC power to demo the phones I am displaying. I can't figure out what battery power supply I need to get to run it. I do not know the output wattage of the tester for example. Has anyone else tried running this tester off an invertor? Can anyone try theirs or help with advice?
Analog Phones for a Digital World

RB

I remember seeing those back in the day.
The box you appear to be dealing with,
Is supplied with 120vac that renders down to either 48vdc, or 24vdc.
probably 48vdc. but not positive.
if you are handy with a screwdriver, you could remove the cover, locate the transformer,
move to the rectifier, and measure the output voltage.
tapping onto the B+ and the B- from a battery, will power the box.
The problem I have, is with the input current.
8 amps seems quite high for this application.
I would think a 3 to 5 amp supply would do.
now, to find one...
48volts is a telephone voltage. not much uses that today. or 24volts for that matter.
I would get a GOOD inverter, one with good filtering, and use that.
Any inverter will power it, just a matter of if it is noisy or not.
Then you can use it remotely.
Good luck!