TM 11-2674: Crystal Test Set TS-314/FSM-1 (Ray Jefferson Model AF-30)

TM 11-2674 Crystal Test Set TS-314/FSM-1 (Ray Jefferson Model AF-30)

TM 11-2674

Crystal Test Set TS-314/FSM-1 (Ray Jefferson Model AF-30)

Army · TM · May 1945 · 95 pages

About

SECTION I DESCRIPTION OF CRYSTAL TEST SET TS-314/FSM-l ' 1. GENERAL. Crystal Test Set TS-314/FSM-1 (Ray Jefferson Activity and Fre quency Test Unit AF-30) is an instrument designed for checking the activity and frequency of quartz crystals either for duplication purposes or for final test. It is an alternating-current (a-c) operated instrument, mainly used in grinding crystal blanks to the frequency of a standard crystal and for checking the activity of these new crystals. Adjustments are provided for measuring the frequency of the crystals over the range of 2,000 to 10,000 kilocycles (kc). Activity is checked by means of a meter inserted in the grid circuit of the crystal oscillator while frequency is checked aurally by means of headphones, and visually by means of a frequency meter.

DesignationTM 11-2674

EditionMay 1945

StatusSuperseded

Pages95

FunctionComms Signal

CollectionHistoric

Public domain (U.S. Government work)

References 13

TM 3-220Not in the Vault
FM 21Not in the Vault
TM 1-455Not in the Vault
TM 11-453Not in the Vault
TM 11-462Not in the Vault
TM 11-483Not in the Vault
TM 37-250Not in the Vault