|
 |
 |
 |
|
 |
|
 |
|
|
Last Updated
03/31/2019
Sitemap
|
|||||||||
Detailed entries for one subject from the INDEX TO HOW TO DO IT INFORMATION. |
|||||||||
|
FREQUENCY CALIBRATION sa OSCILLOSCOPE CALIBRATION x CRYSTAL CALIBRATOR/OSCILLATOR xx ELECTRONIC TESTING xx SIGNAL GENERATOR An improved crystal calibrator consists of two ICs, a 100 kHz crystal and a few other componants. It produces calibration marker points at 10 kHz intervals throughout the high-frequency spectrum. Simple calibration standards circuits. (1) Precision 2.500 volt standard. (2) 1-MHz frequency standard. Build a 455 kHz tunable BFO (beat-frequency oscillator) for receivers that use Collins-Rockwell mechanical filters. Pilot carrier frequency standard. This project turn almost any FM monaural radio into an accurate signal source for experimenting or calibrating. A modulated crystal calibrator. CB walkie-talkie tester. A modulated crystal-controlled RF generator to align walkie-talkie receivers. Produces an audio signal to test modulator and a sensitive remote-indicating FSM (field strength meter). Crystal-controlled signal generator used for CB receiver alignment. Produces modulated or unmodulated IF signals of 455 kc or any frequency from 1300 to 2000 kc. Also supplies an RF signal (26.96 to 27.25). Crystal calibrator produces 1 megacylce pips, modulation tones, and a hefty output signal. Useful up to 6 meters. Unit is small in size and battery-powered. Dual-frequency standard produces signal markers every 100 kc or 1 mc. The markers are audio modulated at 600 cps. Crystal oscillators. Learn the fundamentals of crystal resonators. How and why they work in oscillators and frequency standards. Part 1. Resonators based on the piezoelectric effect. Crystal oscillators. Part 2. Fundamentals of all transistorized oscillator circuits. Dual-range IC frequency standard. Design, calibration and operation of a solid-state version of a crystal oscillator with frequency divider. Solid-state crystal calibrator provides frequencies of 10, 20, 25, 50, 100 and 1000 KC with harmonics extending well beyond 34 mc. Est. cost: $25. Low-cost, integrated circuit, crystal-controlled frequency calibrator. Produces easily identified marker pulses at 25, 50 and 100 kHz. Est. cost: $23. Pilot carrier frequency standard. This project turns an FM monaural radio into an accurate signal source for experimenting or calibrating. Uses the FM 19 kHz pilot carrier signal to generate squarewaves of 1 kHz, 100 Hz, 10 Hz, and 1 Hz. Rubber Crystal Oscillator combines the best features of a stable crystal oscillator and a tunable Colpitts. A 100KHz crystal calibrator uses a field-effect transistor. Advanced ham crystal-controlled frequency calibrator works with vacuum-tube receivers to make certain their operating frequencies fall within 25 KHz of the correct frequency. Switch-selectable, crystal-controlled frequency calibrator puts tone modulated marker pips at 1000, 500, 200, 100, 50, 20 or 10 KHz clear out to 30 MHz. Enables you to locate a specific shortwave frequency on a receiver. Frequency calibrator for oscilloscope or shortwave receiver uses a silicon-contolled switch to simplify the circuit. Frequency standard delivers markers at both 50 and 500 KHz intervals for use in shortwave receiver calibration. Build a gated 100 KHz calibrator. Est.cost: 25. Dual-mode crystal calibration oscillator for the ham and SWL provides accurate frequency checks 25 and 100 KHz apart. Est. cost: $8. Deluxe frequency standard. One crystal and four economy-priced TTL integrated circuits produce seven crystal-controlled calibration frequencies. They are AM or CW signals at 1, 5, 10, 50, 100 and 500 KHz and at 1 MHz intervals to well above 50 MHz. How frequency synthesizers work. A myriad of highly accurate frequencies can be generated from a single crystal. Build the super marker. Inexpensive marker generator with selectable 100, 50, 20, or 10 kHz output allows precise tuning of shortwave receivers. Est. cost: $15. Low-cost crystal oven will keep a crystal-controlled frequency source much more stable. Useful RF (radio frequency) circuits. (1) RF-Sniffer can be used to hunt for RF-noise or indicate that a transmitter is operating. (2) RF-detector probe allows a DC voltmeter to indicate the presence of powerful radio waves. (3) Sensitive RF-detector probe allows a meter to detect small RF signals. (4) Wideband RF instrument amplifier. (5) Tuned or untuned RF wavemeter will provide an indication of the output level of a transmitter signal as radiated from an antenna or dummy load. (6) 100 kHz crystal calibrator RF source to calibrate receivers, sweep generators, signal generators, or other RF sources. An easy-to-build crystal oscillator that is a must for your workbench. Works with fundamental crystals from 100 kHz to 17 MHz. Has a rich harmonic output for a one-transistor circuit. A look at the Loran-C navigation system, what it is, and how it works. How to use Loran-C signals as frequency standards for calibrating oscillators. How to calibrate your own frequency standards using WWV as a source of highly accurate time- and frequency-signals. Build this television-derived frequency standard which lets you use almost any TV as an accurate frequency reference. Est. cost: $65. Economical 10-MHz frequency standard to calibrate your test equipment, such as a frequency counter. Relies on picking up the NBS frequency standard broadcast on radio station WWV. Down-counter cookbook. Using presettable down-counters to design frequency dividers, frequency synthesizers and alpha-numeric displays. Programmable crystal-controlled pulse generator (calibrated frequency source) incorporates a programmable crystal oscillator IC. Using the perf-board construction technique to build a frequency standard, a 100 kc calibrator compact enough to mount in receiver chassis. Est. cost: $11. | |||||||||
Copyright © by Norman Lathrop Enterprises. All Rights Reserved. No part of this publication may be reproduced, stored in a retrieval system or transmitted, in any form or by any means (electronic, mechanical, print photocopying, recording or otherwise) without the prior expressed permission of Norman Lathrop Enterprises, except as permitted by law. |
|||||||||