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What is a good VHF/UHF SWR/DEVIATION meter to buy? | QRZ ...
https://forums.qrz.com/index.php?threads/what-is-a-good-vhf-uhf-swr-deviation-meter-to-buy.236634/#:~:text=A%20%22deviation%20meter%22%20is%20used%20to%20measure%20the,purchased%20by%20a%20lot%20of%20amateur%20radio%20operators.
Deviation meter - VK5DJ
https://vk5dj.com/deviation.html
audio amp/detector/meter driver board, and display meter The Receiver This can be most any receiver suitable for +/- 5KHz deviation, but the demodulated output MUST be taken from the discriminator and NOT from the normal audio chain as …
A Deviation Meter
https://www.repeater-builder.com/projects/dev-meter/deviation-meter.html
The DC coupled oscilloscope output provides a 150 mV/kHz deviation signal for viewing the audio wave form and checking for frequency offset. 73 & Enjoy! Tom, VA7TA There are 2 different files that contain printable schematics: One is deviation-meter.doc It will open and print properly from Microsoft Word. The other is a PDF file: deviation ...
Audio Level Meter for Windows Sound - WA8LMF
http://wa8lmf.net/Meter/index.htm
Poor Man's Deviation Meter For FM Transmitters This setup can measure FM transmit audio level (deviation or modulation) fairly precisely as well. You can use this setup to set the transmit level of soundcard applications or packet TNCs. A second second radio to listen to the transmitter being measured will be required. This could be a
An Inexpensive and Accurate FM Deviation Meter for Hams
http://www.bliley.net/K3NAU/FM_Deviation_Meter/index.html
These formulas predict for example, with a 1 KHz modulating frequency, at precisely +2.404 KHz deviation, the carrier frequency signal will disappear and only the upper and lower sideband signals will remain. Now if we can come up with a scheme to find out and measure when the carrier disappears, we can create a deviation meter.
FM Deviation Meter - TPG
http://users.tpg.com.au/users/ldbutler/DeviationMeter.htm
the deviation range by changing the gain of N2 circuit. Deviation ranges of 0-5 kHz, 0-10 kHz and 0-50 kHz are provided. THE METERING CIRCUIT The audio output of N2 is rectified by either diode V1 or diode V2 to charge either C10 or Cl1 to the peak value of the audio waveform. Positive or negative peak is selected by
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