TM 11-2669: Keyer KY-7/FRT | T.REX ARMS Field Manual Vault

TM 11-2669 Keyer KY-7/FRT

TM 11-2669

Keyer KY-7/FRT

Army · TM · Sep 1945 · 67 pages

About

SECTION I. DESCRIPTION 1. GENERAL. Keyer KY-7/FRT (fig. 1) is a unit designed to adapt any type of keyed radio transmitting equipment to tone-keying operation. The keyer is intended for use with a 500-ohm keying line. This line feeds a keyed tone into the input transformer of the keyer. The transformer has a center tap for simplex control. A keying tone of approximately 1,000 cycles at an input level between — 15 and +10 decibels (6-milliwatt reference level) is required for dependable keying. The keyer provides a keyed negative out put voltage of from 0 to 115 volts. It also contains a polarized keying relay which, controlled by the keyed tone input, can be used to key the associated radio transmitting equipment. TL'3Q93S Figure 1. Keyer KY-7/FRT. 2. TECHNICAL CHARACTERISTICS.

DesignationTM 11-2669

EditionSep 1945

StatusSuperseded

Pages67

FunctionComms Signal

CollectionHistoric

Public domain (U.S. Government work)

References 21

TM 11-6629Not in the Vault
TM 11-2613Not in the Vault
TM 11-2627Not in the Vault
TM 3-220Not in the Vault
TM 1-455Not in the Vault
TM 11-314Not in the Vault
TM 11-453Not in the Vault
TM 11-462Not in the Vault
TM 11-483Not in the Vault
TM 11-499Not in the Vault
TM 37-250Not in the Vault