Скачать с ютуб Testing a 1.5 volt / 1 transistor pulsed VHF beacon в хорошем качестве

Testing a 1.5 volt / 1 transistor pulsed VHF beacon

Possibly the simplest possible pulsed beacon transmitter. Video describes where I got the circuit from, modifications to make it light dependent and complications along the way. I then do a range test on a local beach and get a surprising distance for a 1 transistor circuit powered by 1 x AA battery. The beacon operates just below 37 MHz using a commonly available 36.864 MHz crystal. In Australia frequencies around this are allocated to 'low interference potential devices' with a 100mW EIRP power limit. This transmitter would have an output of a few milliwatts only. Contents 0:00 Introduction 0:23 Circuit of previous 2 transistor beacon 1:06 Inspiration for this project 1:29 My unit and description 2:05 Circuit of 1 transistor beacon and description 3:07 Important components 3:53 Outside range test - How far? 5:02 Summary and applications 5:22 Hand-carried QRP Antennas (book) PS: If you liked this video please consider supporting Amateur Radio VK3YE by: * Subscribing on YouTube, * Checking my books page at https://books.vk3ye.com​​​​​​​​​​​​​​​​ to see if any appeal, * Shopping on Amazon via: https://amzn.to/3iiDQXv​​​​​​​​​​​​​​​​ , or * Shopping on eBay via: https://ebay.us/i9DuWP (then if you buy something I'll get a small commission at no cost to you)