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What Are Rotary Dial Phones and How Do They Work?
Interesting Engineering ^ | 6/5/21 | Christopher McFadden

Posted on 05/21/2024 10:19:32 AM PDT by DallasBiff

The rotary dial phone was once the be all and end all of the telephones. Like the cellphone of today, everybody had one, and they ruled domestic communications for decades.

But that all changed in the 1980s when they were supplanted by a new upstart, push-button telephones. Their days were numbered (pun intended).

Many born after the 1990s have likely never seen one, which is a shame. But for those who do remember, join us as we take a trip back in time in remembrance of this glorious piece of telecommunications history.

(Excerpt) Read more at interestingengineering.com ...


TOPICS: Business/Economy; Chit/Chat; History
KEYWORDS: mabell; phone; rotaryphone
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To: steve86

The time service I remember was “popcorn” and had an automated voice saying “at the tone, the time will be xyz and xy seconds.”


61 posted on 05/21/2024 11:04:15 AM PDT by Disambiguator
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To: ElkGroveDan

Ya, I remember a rich relative that didnt mind wasting the additional 70 cents per month or whatever it was for the fancy phone. I remember it was quite the big deal in our house at the time, “the way some people throw money away.”


62 posted on 05/21/2024 11:04:47 AM PDT by gnarledmaw (Hivemind liberals worship leaders, sovereign conservatives select servants.)
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To: READINABLUESTATE

Not quite.

A lightning bolt struck the line out where my grandma lived and everyone on the party line had a bright light flash in their house right before the phones melted.


63 posted on 05/21/2024 11:07:56 AM PDT by gnarledmaw (Hivemind liberals worship leaders, sovereign conservatives select servants.)
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To: Jamestown1630

You can still listen to the time on WWV shortwave. Seems at one time it was connected with the Naval Observatory — maybe still is. If Internet and GPS went down this is how you would do time synchronization.


64 posted on 05/21/2024 11:08:03 AM PDT by steve86 (Numquam accusatus, numquam ad curiam ibit, numquam ad carcerem™)
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To: Hiddigeigei

Amherst 9-5448


65 posted on 05/21/2024 11:08:56 AM PDT by dljordan
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To: Steely Tom

DTMF = dual tone, multi frequency.


66 posted on 05/21/2024 11:09:16 AM PDT by Blueflag (To not carry is to choose to be defenseless.)
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To: Jamestown1630
You can buy old refurbished ones; the people who restore old phones can put pulse to tone converters in, rig them to work with VOIP services, etc.

I have the Verizon fiber optic service which allows me to connect just about any old phone and have it work. I use it to test old dial phones.

67 posted on 05/21/2024 11:09:19 AM PDT by Fresh Wind (Nothing says "Democracy" like throwing your opponents in jail.)
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To: combat_boots

I was on a party line as a pregnant young married. The other party hogged that line. Fortunately I went into labor on a Saturday morning when my husband was home.


68 posted on 05/21/2024 11:11:15 AM PDT by Wiser now (Socialism does not eliminate poverty, it guarantees it.)
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To: DallasBiff

Back in the 70’s it was a real experience using a rotary phone to be the ‘10th caller’ to a radio program in order to win a prize. Especially, when there were a lot of 8’s, 9’s or 0’s in the phone number.


69 posted on 05/21/2024 11:13:13 AM PDT by HardyCanuck (Press Gangs)
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To: Jamestown1630

Also https://www.oldphoneshop.com/

I once tried to buy a blue 302 at an estate auction, and ran it up to around $500 and the other bidder wouldn’t quit. Maybe I’ll find one at a yard sale someday.


70 posted on 05/21/2024 11:13:54 AM PDT by Fresh Wind (Nothing says "Democracy" like throwing your opponents in jail.)
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To: Fresh Wind

I still have one that my grandmother used; it costs a lot less if you just want them refurbished/adapted.


71 posted on 05/21/2024 11:16:34 AM PDT by Jamestown1630 ("A Republic, if you can keep it.")
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To: Jamestown1630

I think it was around then too when my middle daughter came home all worked up because of the difficulty she had getting home from a friends house.

Long story short, the only phone available for her to use to call me was her friends grandmothers phone out in the stables and neither she nor her friend could figure out how to use a rotary so they couldnt call out.

She spent a lot of time there so I explained it to her and she still didnt get it. I wound up making a fake dial so she could see what I meant.


72 posted on 05/21/2024 11:17:00 AM PDT by gnarledmaw (Hivemind liberals worship leaders, sovereign conservatives select servants.)
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To: Magnum44

My first thought.

GMTA


73 posted on 05/21/2024 11:18:33 AM PDT by nesnah (Infringe - act so as to limit or undermine [something]; encroach on)
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To: Blueflag
Rings were caused by 40 volts DC flowing down that circuit from a huge rack of dry cells at the local switching station.


74 posted on 05/21/2024 11:18:52 AM PDT by NorthMountain (... the right of the people to keep and bear arms shall not be infringed)
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To: Fresh Wind

https://oldphoneworks.com/products/302-blue-all-original-fully-refurbished


75 posted on 05/21/2024 11:19:27 AM PDT by Fresh Wind (Nothing says "Democracy" like throwing your opponents in jail.)
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To: Harmless Teddy Bear

Hahaha!!!


76 posted on 05/21/2024 11:19:37 AM PDT by MeganC (Ruzzians aren't people. )
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To: aimhigh
They really screwed up when designing the push button phones. They reversed the order of the numbers compared to adding machines.

It was deliberate.

People skilled with data entry could push the buttons MUCH faster than the switching system could keep up. The equipment needed enough time to discriminate between which of the three column tones AND which of the four row tones were intended before the next number was pressed.

There simply weren't tone detectors and other electronics available at the time to do this over noisy and lower quality lines.

Flipping the top and bottom rows slowed down the 10,000 numbers entry per hour accountants...

77 posted on 05/21/2024 11:19:38 AM PDT by null and void (Everyone on all sides a conflict will be happy to lie to you, except our side, of course!)
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To: mabarker1

my aunt&uncle had a crank phone till the 60s...


78 posted on 05/21/2024 11:20:28 AM PDT by Chode (there is no fall back position, there's no rally point, there is no LZ... we're on our own. #FJB)
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To: DallasBiff

Here’s a film from the 50’s explaining how Bell System introduced the new phones:

The Dial Comes To Town
https://www.youtube.com/watch?v=p45T7U5oi9Q


79 posted on 05/21/2024 11:20:35 AM PDT by Albion Wilde (Either ‘the Deep State destroys America, or we destroy the Deep State.’ --Donald Trump)
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To: Captain Peter Blood

“ATT was withholding a lot of technology.”

whose?


80 posted on 05/21/2024 11:22:10 AM PDT by xoxox
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