WWV and WWVH time and standards broadcasts. What you can hear and two circuits (a bandpass filter and 1-Hz oscillator) which aid in viewing WWV signals on the screen of an oscilloscope.
MODERN ELECTRONICS [2] Feb 1991 (v.8#2) pg. 24
Correction COMPUTERCRAFT May 1991 (v.1#2) pg. 7
A DX'ers guide to tuning in radio stations which broadcast highly-accurate time signals.
POPULAR COMMUNICATIONS Jul 1990 (v.8#11) pg. 12
Portable time-signal receiver features complete superhet circuit with crystal-controlled local oscillator, etc. Powered by 9-volt battery.
POPULAR ELECTRONICS [1] Oct 1966 (v.25#4) pg. 41
AM radio converter to receive the National Bureau of Standards station (WWV) or the Canadian equivalent (CHV), both of which give the exact time every few minutes.
POPULAR ELECTRONICS [1] Jul 1968 (v.29#1) pg. 41
Build a three-channel time receiver (5-, 10- and 15-MHz). Est. cost: $75.
POPULAR ELECTRONICS [1] Dec 1970 (v.33#6) pg. 33
Two single-IC AM receiver projects. (1) The simplest AM/WWV receiver, and (2) an FAA weather receiver.
POPULAR ELECTRONICS [1] Jun 1974 (v.5#6) pg. 58
A simple 10-MHz WWV to 80-meter down-converter (frequency converter) uses a process called "heterodyning" to convert the WWV time/frequency signals to 3.6 MHz (in the 80-meter ham band).
POPULAR ELECTRONICS [2] Aug 1990 (v.7#8) pg. 88
Build a battery-powered WWV receiver to get time, weather, frequency, and other information.
POPULAR ELECTRONICS [2] Jan 1995 (v.12#1) pg. 49
Frequency converter circuits. (1) Translate WWV's 10-MHz signal to the 75-meter ham band. (2) Translate VLF signals to the 6000-kHz region.
POPULAR ELECTRONICS [2] Jul 1996 (v.13#7) pg. 62
Easy-to-build dipole antenna for receiving RWWV time signals.
POPULAR ELECTRONICS [2] Apr 1999 (v.16#4) pg. 63
How to calibrate your own frequency standards using WWV as a source of highly accurate time- and frequency-signals.
RADIO-ELECTRONICS Sep 1983 (v.54#9) pg. 62
Electronic "beeper box" eliminates stray noises when shortwave signals are being recorded on tape cassettes. It also allows putting distinctive marker sounds on the tape. Later analysis of such tapes allows the precise times of astronomical events to be determined.
SKY & TELESCOPE Mar 1986 (v.71#3) pg. 307