Harris TS22AL Telephone Butt Set

Background
Description
Manual
Photos
Patents
Related
References
Links

Background

It turns out there's a memory backup battery built into this butt set and when it goes bad all functionally stops. So you can get them for a low price. This is how I got this one, knowing that the internal battery would need to be replaced.

Description

Versions

TS22L Amplified Speaker (for listening only)

TS22AL
Speakerphone & Speaker (talk and listen when in TALK mode)

Batteries

Speaker power

Battery: 9V
Remove three screws near Belt Clip (snap hook) to access battery compartment.

Memory

Battery: 2032 3V coin cell.

Cords

The standard cord is the P3218-028 Single Piercing Pin.
The most common option is the P3218-234 Angled Bed of Nails that also has a piercing pin.

Manual

Harris TS 22L and TS 22AL Data Lockout Series Craft Test Set Description and Use (pdf) is on line.
There's no mention in the manual of the memory backup battery!
Note the U.S. government put a requirement on all purchases some decades ago banning internal batteries that were not user replaceable.

Photos

Fig 1

Fig 2
Fig 3

Fig 4 9V measured 2.2V,
CR2032 Measured: 0.017V

Fig 5 The CR2032 battery has tabe spot welded to the top and bottom. The tabs are soldered into the PCB.

Fig 6 I broke the top spot welds and broke the bottom tab to remove the battery.

Fig 7
Fig 8 Checking polarity: top of battery=+
Note solder pad under battery and solder pad
near lower left corner are both ground. Used the latter pad for connection.

Fig 9 Installed.

Fog 10 Need to trim plastic tab on cover.

Patents

3708634 Telephone hand test set, M Vantill, G Laing, D Lounsbury, Nortel, 1973-01-02, 379/21 -
Prior Art test sets had Monitor - Talk switch for High or Low impedance.
But were not designed to be connected to a circuit carrying data.
This test set allows bridging a data circuit without problems.

- not well suited for dry loop operation

D258061 Telephone transmitter and receiver, Arthur L. Foreman, (Dracon) Harris, 1981-01-27, -

4682346 Telephone test set, Richard W. Faith, Thomas W. Durston, Fluke (Harris), 1987-07-21
The voltage drop across the polarity indicating circuit of the TS-21 diminishes the usability on "dry circuits"
where there is no central office battery. The TS22 solves this problem and so works on both types of circuit.

4691336 Telephone test set having an auxiliary amplifier and speaker for permitting listening to line signals, Thomas W. Durston, Harris (Fluke), 1987-09-01, - Allows (1) hearing speaker with test set clipped to belt, (2) can listen to DATU (Wiki) messages, (3) in monitor mode no disturbance to line. Replaces an add on amplifier used on the TS-21.

3632878 Piggyback amplifier, John A Stratman, Lumedor Prod, 1972-01-04

Historical Patents

Excluding ones that contain a hand crank magneto.

736672 Telephone, John A Barrett, Louis A Falk, Herbert E Shreeve, AT&T, 1903-08-18, - Western Electric 244

1439729 Telephone hand set, Deakin Gerald, AT&T, 1922-12-26, 379/362; D14/148; 379/370; 379/433.07; 379/433.01 - Belgium may use different dial number order?

1440752 Telephone Test Set, R.B. Stone, 1923-01-02, 379/21 379/433.01 - specifically does NOT have a magneto since they are huge. All prior telephone test sets have had them and so were mounted in wooden boxes.

1613851 Hand telephone, Sengebusch Hans, Automatic Electric, 1927-01-11, 379/370 200/1A D14/148 -
Looks like current standard dial number order.

2039625 Acoustic device, Blount Nelson, Bell Labs, 1936-05-05, 379/370 D14/148 425/DIG.56 379/433.01 -

2520592 Telephone test set with line resistor, Anthony L Wronke, 1950-08-29, 379/21 -

Includes dial (14) mounted behind receiver.

Phones -

Bell System 302 Dial Phone -
Bell System 500 Dial Phone -
Bell system 2500 Touch Tone phone -
Cell Phones
EE-8 Telephone Set
Fullerphones
TSEC/KY-65
TA-1 Sound Powered Telephone Set
TA-312/PT Telephone Set (Field Phone)
TA-341/TT
TA-838/TT Telephone Set
TA-1042 Digital Non-Secure Voice Terminal (DNVT)
TG-5-B Telegraph Set
Western Electric 202 Dial phone-

Test Equipment

Fluke TS100 Cable Fault Finder
HP 4395A Network Analyzer with the HP 4380S CAT 5 Cable test System

KS-8455L2

MK-356/G Wire Splicing Kit
Tempo Sidekick T&N
ZM-4B/U Resistance Bridge
Harris T1000 ADSL tester
Harris TSP-21 Test Set - similar or operator's phone
Acterna DSL350 Tester
JDSU SmartClass ADSL Tester
Subscriber Loop Analyzers -
Telephone Tool Kit
Tone & Probe
TS-2839/GY Audio Test Set - for U-77 military audio accessories
TS-3647/G, Control Orderwire Unit (COU)

Others

SB-22A Switchboard
SB-4170 /TT Switchboard
HYX-65-1 Wire-line Adapter Local Unit for KY-65
Panasonic KX-TA824 Small Business hybrid PBX
Sound Powered Telephone & early Loudspeakers
GRA-39 Radio Set Remote
Z Impedance
Z0 - transmission line impedance including CAT5 and Open wire
Station Protection

References

Links

PRC68, Alphanumeric Index of Web pages, Contact, Products for Sale
Page Created 2021 June 15

	3708634 Telephone hand test set, M Vantill, G Laing, D Lounsbury, Nortel, 1973-01-02, 379/21 - Prior Art test sets had Monitor - Talk switch for High or Low impedance. But were not designed to be connected to a circuit carrying data. This test set allows bridging a data circuit without problems. - not well suited for dry loop operation
	D258061 Telephone transmitter and receiver, Arthur L. Foreman, (Dracon) Harris, 1981-01-27, -
	4682346 Telephone test set, Richard W. Faith, Thomas W. Durston, Fluke (Harris), 1987-07-21 The voltage drop across the polarity indicating circuit of the TS-21 diminishes the usability on "dry circuits" where there is no central office battery. The TS22 solves this problem and so works on both types of circuit.
	4691336 Telephone test set having an auxiliary amplifier and speaker for permitting listening to line signals, Thomas W. Durston, Harris (Fluke), 1987-09-01, - Allows (1) hearing speaker with test set clipped to belt, (2) can listen to DATU (Wiki) messages, (3) in monitor mode no disturbance to line. Replaces an add on amplifier used on the TS-21. 3632878 Piggyback amplifier, John A Stratman, Lumedor Prod, 1972-01-04

TS22L	Amplified Speaker (for listening only)
TS22AL	Speakerphone & Speaker (talk and listen when in TALK mode)

Fig 1	Fig 2	Fig 3
Fig 4 9V measured 2.2V, CR2032 Measured: 0.017V	Fig 5 The CR2032 battery has tabe spot welded to the top and bottom. The tabs are soldered into the PCB.	Fig 6 I broke the top spot welds and broke the bottom tab to remove the battery.
Fig 7	Fig 8 Checking polarity: top of battery=+ Note solder pad under battery and solder pad near lower left corner are both ground. Used the latter pad for connection.	Fig 9 Installed.
Fog 10 Need to trim plastic tab on cover.

	736672 Telephone, John A Barrett, Louis A Falk, Herbert E Shreeve, AT&T, 1903-08-18, - Western Electric 244
	1439729 Telephone hand set, Deakin Gerald, AT&T, 1922-12-26, 379/362; D14/148; 379/370; 379/433.07; 379/433.01 - Belgium may use different dial number order?
	1440752 Telephone Test Set, R.B. Stone, 1923-01-02, 379/21 379/433.01 - specifically does NOT have a magneto since they are huge. All prior telephone test sets have had them and so were mounted in wooden boxes.
	1613851 Hand telephone, Sengebusch Hans, Automatic Electric, 1927-01-11, 379/370 200/1A D14/148 - Looks like current standard dial number order.
	2039625 Acoustic device, Blount Nelson, Bell Labs, 1936-05-05, 379/370 D14/148 425/DIG.56 379/433.01 -
	2520592 Telephone test set with line resistor, Anthony L Wronke, 1950-08-29, 379/21 - Includes dial (14) mounted behind receiver.