Click the DONATE button below for more information on how to make a donation. QSL.net e-mail and web services are provided at NO COST to amateur radio operators and organizations, although donations are encouraged and very much appreciated. If this error is due to a missing file for the QSL.NET web site, then please feel free to contact us to report the problem. You might also try an Internet Search to find what you were looking for. We suggest you try to reach the website owner directly, if possible. QSL.NET hosts more than 30,000 websites, all maintained by different people, so we will not be able to help you find the page or file you were looking for. Sorry, but the page or file you were looking for no longer exists. ISSN0033-4812.Error 404 - Page Cannot Be Found SITE MENU Newington, CT: American Radio Relay League. Archived from the original (PDF) on 18 February 2014.
Proceedings of the Radio Club of America. 'New method of accurate frequency measurement' (PDF). The 2013 ARRL Handbook for Radio Communications (90th ed.). Wikimedia Commons has media related to Dipmeters. 0183 32 Field Effect Transistor FET Gate Dip Oscillator GDO Most recent Update The circuits shown here are based upon work by Doug DeMaw W1FB SK This is a relativity easy to build FET GDO As shown above the frequency coverage is limited to a spread of frequencies from about 115 MHz to about 25 MHz which includes four. Since the power in the circuit under test must be high enough to register on the meter, this uncommon method is risky both for the operator and the equipment. The operator finds the frequency at which the highest rise in meter power occurs in the unpowered GDO, when its coil is held near the wires of an active resonant circuit. Central to the dip meter is an HFvariable frequency oscillator with a calibrated tuning capacitor and matching interchangeable coils, as shown in the circuit. Some dip meters can be used in reverse, as ultra-short-range, tuned field strength meters.
0 kommentar(er)
