TRANSMITTER MOD-SPM FOR TELEMETRY

Abstract

A description is given of the transmitter ModSPM, referred to as spin transmitter. Essentially it is a negative-grid oscillator employing two triodes in balanced circuit driving a split-loop antenna. It is used for measuring the rate of spin of the XM390 projectile and requires little or no modification of the vehicle. Frequency of operation is approximately 220 to 230 mc and radiated power of the unit is 200 mw. Configuration of the test site and location of the transmitter were such that toroidal nulls and maxima were recorded by a receiving station. The spin rate of the vehicle is equal to the number of nulls provided by one-half the flight time. (Author)

Document Details

Document Type
Technical Report
Publication Date
Nov 15, 1961
Accession Number
AD0267602

Entities

People

  • Fred R. Nemir

Organizations

  • Harry Diamond Laboratories

Tags

Communities of Interest

  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Antennas
  • Frequency
  • Loop Antennas
  • Oscillators
  • Projectiles
  • Telemetry
  • Transmitters

Fields of Study

  • Physics

Readers

  • Electronics Engineering
  • Radar Systems Engineering.
  • ballistics.