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70cm Projects - Transmitters

Click to enlargeexperiment of 1transistor TV transmitter by JF1OZL
I will show you a simple TV transmitter. But this is planned only for experiment. You can not make TV station with such a simple circuit. And experiment of this gear makes some interference for TV.
http://www.intio.or.jp/jf10zl/tvtr.htm

Click to enlargeSimple 430 FM TX by JF1OZL
This is a very simple 430MHz band FM transmitter. This transmitter uses only 2 FET-transistors. Oscillator unit makes 16MHz signal with its crystal. The oscillating frequency is changed by Varicap diode.
http://www.intio.or.jp/jf10zl/430TX.htm

Click to enlargeUHF signal-generator by JF1OZL
One day, as a next step of my hand make activity, I decided to make 430MHz transceiver. 430MHz transceiver includes some 430MHz amplifier. To tune these amplifier and band pass filter, I need UHF signal generator.
http://www.intio.or.jp/jf10zl/uhfsg.htm


Creation date : 16/08/2007 @ 18:57
Last update : 17/09/2015 @ 23:06
Category : 70cm Projects
Page read 15273 times


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