====== Test set T-107 ======
**Test set T-107**; manufactured by [[Autophon|Autophon AG, Solothurn]].

Autophon developed a test set for alignment and repair work to fit the [[SE-208]], [[SE-209]] and [[SE-411]] radio set family.

{{:images:t-107-b.jpg?direct&600|}}

===== Technical data =====
  * [[Principle]]: Measuring instrument for voltages, resistances, 100 μA; set-specific measurements; **RF oscillator 23 - 35 MHz**, IF oscillator for the intermediate frequency 1.65 MHz, AF oscillator 1000 Hz

==== Power supply ====
  * [[Batteries]]: Heater battery [[10001]] 1.5 V; plate battery [[10103]] 103.5 V
  * [[Mains operation]]: 220 V

==== Dimensions ====
  * 353 x 227 x 210 mm, 7.5 kg

==== Accessories ====
  * Cable set in lid section, regulations

----

{{:images:t-107-b-front.jpg?direct&600|}}
===== Operation =====
The mains or battery-operated T-107 test set developed by [[Autophon]] allows maintenance and alignment to be carried out on the [[Autophon]] [[SE-208]] / [[SE-209]] and [[SE-411]] family radios thanks to the built-in RF oscillator, which covers the frequency range 23 - 35 MHz. 

In addition to the RR oscillator, which can be modulated at 1000 Hz, it also includes a crystal-controlled oscillator active on the IF of 1.65 MHz and a tube voltmeter and ohmmeter for measuring the anode and heater voltages, among other things.

{{ :images:t-105-t-107.jpg?direct&300|}}
For measurements, the tester is connected to the radio with the corresponding cables; the radio can be controlled from the test set via the special cable without connecting a headset.

The instrument can be used to measure DC voltages of 3 V, 30 V, 300 V, 600 V and AC voltages of 3 V and 30 V. Resistance measurements are possible with three ranges. The 12-position measuring switch can be used to carry out the same fault diagnostic test measurements in positions 1 - 8 as with the [[EJ83]] diagnostic instrument; the test set is connected to the measuring socket on the transceiver or the [[SG94]] power supply.

All functions and test procedures are described in the regulations.

===== Technical principle =====
Quartz-controlled IF oscillator 1.65 MHz (two [[1V6]]), AF oscillator 1000 Hz, RF oscillator ([[1AD4]]).

==== Tube configuration ====
V1 ([[1V6]], IF oscillator); V2 ([[1AD4]], AF oscillator 1000 Hz); V3 ([[1V6]], 2nd stage IF oscillator); V4 ([[1AD4]], RF oscillator).

==== Development ====
The T-107 was developed for maintenance and alignment work on the [[SE-208]]/[[SE-209]] and [[SE-411]] radios from [[Autophon]]. The [[T-105]] is almost identical apart from the RF oscillator frequency range 35 - 54 MHz.

==== Use ====

{{gallery>::images?t-107*.jpg&0&80x80&lightbox&showtitle&titlesort}}

===== Technical documentation =====
  *{{ :manuals:autophon-testgeraet-t107.pdf |Testgerät T-107, Bedienungsanleitung, Autophon AG}}
  *{{ :manuals:autophon-testgeraete-t105-t107-revision.pdf |Revisionsanleitung Testgeräte T105, T106, T107}}

==== Further information ====
  * [[http://www.armyradio.ch/radio-d/t-107.htm|T-107 on www.armyradio.ch]]
  * [[http://www.radiomuseum.org/r/autophon_testgeraet_t_107t10.html|T-107 on the website of www.radiomuseum.org]]