A detector designed to search for modulation of auroral electron fluxes in the frequency range 50 kHz to 10 MHz and energy range 5--7 keV was flown on a Nike-Tomahawk sounding rocket payload launched from Poker Flat, Alaska, at 0722 UT on February 25, 1972. Data from the flight show no obvious peaks in the frequency spectra. However, cross-correlation analysis of the data shows low-level modulation near the detection threshold of the instrument. The 5% modulation occurs at frequencies from 4.2 to 5.6 MHz at 211--218 s into the flight. The indicated modulation occurred near the boundary of two oppositely directed Birkeland sheet currents whose position was determined by the use of an on-board vector magnetometer. Also, accompanying the boundary was a large increase in the flux of electrons in the 0.5- to 20-keV range and strong pitch angle anisotropy peaked at 0¿--10¿. Lack of modulation at other times suggests that the observed modulation is related to these features.