Your first radio transmitter can now talk
Автор: Amateur Radio VK3YE
Загружено: 2021-09-26
Просмотров: 11378
Описание:
Getting a simple 1 transistor CW transmitter to talk. Modification adds an LM386 audio amplifier as a modulator to transmit AM voice.
Contents
0:00 Introduction
0:16 How to voice modulate a CW transmitter
2:23 Need an audio amplifier to modulate
2:57 Audio amp diagram
4:59 Electret mic
7:26 Modulator and connecting to the transmitter
10:42 Wiring
11:48 Testing
14:47 Alternative crystal frequencies
15:13 What if it doesn't work?
15:49 Connecting a mobile phone with a voice loop app
16:29 Range test outside
16:57 On a web SDR
18:53 On air reports
19:00 Conclusion
If you haven't done so please watch Part 1 first: • Your first radio transmitter you built you...
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