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TA-57

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Soviet-era field telephone
TA-57 (Полевой Телефонный Аппарат)
TA-57
Main technologies or sub-processesField telephone
Year of invention1957

The TA-57 is a Soviet-era field telephone. It is a completely analog battery-powered wired system that is highly resistant to electronic interception and jamming.

History

The first model of the TA-57 rolled out in 1957 for usage by the Soviet Armed Forces.

As of 2022, the TA-57 was reported to be in use by Ukrainian forces in the Russo-Ukrainian War.

It has been documented in human rights reports as a torture device during the conflict, with euphemisms utilizing the TA-57 as a "phone call to Putin" or "call to Lenin".

Description

The TA-57 can be used for induction calls working with 2-wire lines in an OB (local battery) or a ZB (central battery) operation. It can be used to transmit voice messaging in ranges between 0.3 and 3.4 kHz, with a calling frequency of 15 to 45 Hz. Absolute signal level at output of transmission path with a 600Ω load ranges between -3 and +3 dBu. It also a has a deployment time of 2 minutes.

Power is primarily drawn from a 10V lead–acid battery GB-U-1.3 (ГБ-10-У-1.3) with a capacity of 1.3 Ah, alternatively a 9V block battery can be utilized. In OB battery operation, a hand cranked magneto can be used to generate ringing.

The enclosing and body is made of Bakelite and its dimensions measure 22.2 x 16.5 x 7.9 cm, and weighs 2.8 kg.

There are multiple cables that are used, which can establish the range of the phone:

  • Field cable P-275 (П-275); 20 km range
  • Field cable P-274 (П-274); 40 km range
  • Field cable P-268 (П-268); 40–45 km range
  • Field cable P-271 (П-271); 125 km range
  • Overhead line; up to 170 km range.

With a reception amplifier, the signal range of the phone can increase by 30-50%.

It is intended for operation ranging from -40 °C to 50 °C, and a max humidity of 98% at 25 °C.

A modernized variant of it is known as a TA-57U.

Users

Former users

References

  1. ^ Peterson, Nolan (February 7, 2022). "Ukraine's Old School Answers to Russia's Modern Electronic Warfare Weapons". Coffee or Die Magazine. Retrieved 2024-03-25.
  2. ^ "fieldphones.org - Army Fieldphone Comparison". fieldphones.org. Retrieved 2024-03-26.
  3. "Report of the Independent International Commission of Inquiry on Ukraine" (PDF). UN Office of the High Commissioner. 15 March 2023. Retrieved 25 March 2024.
  4. Times, Русская служба The Moscow (2023-03-16). ""Звонок Путину". ООН раскрыла методы пыток российской армии в Украине". Русская служба The Moscow Times (in Russian). Retrieved 2024-03-25.
  5. ^ "Raketen- und Waffentechnischer Dienst (RWD) - Feldfernsprecher TA 57". www.rwd-mb3.de. Retrieved 2024-03-25.
  6. Handwörterbuch des elektrischen Fernmeldewesens [Concise Dictionary of Electrical Telecommunications] (2nd ed.). Berlin: Bundesministerium für Post und Telekommunikation. 1970. pp. 1209–1210, 1941–1942.
  7. ^ "RusArmy.com - Телефонный аппарат ТА-57". rusarmy.com. Retrieved 2024-03-25.
  8. ^ "Telephone Device TA-57U". Radiopribor. Archived from the original on 13 July 2012. Retrieved 25 March 2024.
  9. Krasteva, Gergana (2024-03-25). "Russian terror suspect 'electrocuted by his genitals' during interrogation". Metro. Retrieved 2024-03-25.
  10. "Military Telephone TA-57 Military Unknown - CUSTOM BUILT: Soviet |Radiomuseum.org". www.radiomuseum.org. Retrieved 2024-03-26.
  11. "TA-57 field telephone". Imperial War Museums. Retrieved 2024-03-26.

External links

  • Media related to TA-57 at Wikimedia Commons


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