A 10 minute 7 MHz QRP transmitter and more скачать в хорошем качестве

A 10 minute 7 MHz QRP transmitter and more

Putting together a '10 min QRP transmitter' from Sprat. Then adding a final amplifier and getting on air. On a performance per components basis it's hard to beat. Source for oscillator circuit: http://www.zerobeat.net/g3ycc/tenmin.htm Contents 0:00 Introduction 0:30 Inside 1:16 Oscillator circuit with 1 transistor 1:51 Measuring tx power output 2:25 On air test with online SDR 3:16 Inside with extra transistor 3:34 New circuit - now 2 transistors 5:01 Measuring tx power (now more) 5:20 Another on air test with online SDR 5:36 Changing coupling capacitor value and tests 6:23 Revised construction 8:38 Final circuit 8:48 More testing with online SDR 9:00 Making contacts on the air 11:16 Book - Minimum QRP 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 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)