Here is a high performance radio receiver antenna amplifier for the entire VHF broadcast and PMR band (100-175 MHz) which can be successfully built
The Sputnik regenerative receiver was designed for the 40m amateur radio band, the perfect project for beginners in homebrew radio receivers.
Projects for the electronics enthusiast
Simple Arduino-based "World Band" radio receiver with very good characteristics.
The Mark 2 and Quad 2 were the first tube amps I listened to and this was connected to a Marantz 7C and Khorns. It was a great intro…
You should hear what you’ve been missing!! The most unbiased source of international news today is shortwave radio. Here is a unit you can build yourself.
Cheap DIY Front Panels: I wanted a way to be able to design my own front panels for some synth builds and other modular stuff that was affordable. I will eventually get myself a CNC milling machine, and drill and engrave them that way for a much more professional finish, b…
２０１７／０２／２３（木曜日）晴れ一応、広帯域アンプとフィルタらしきものが出来上がった。テストの結果では増幅しているのかノイズを発生しているのかわからないような状況だが実際に超再生受信回路に接続してみることにした。この超再生受信回路はしばらく使っていなかったのと、電源電圧を９Ｖに変更したので調整をやり直しことにした。回路図はこんなものです。他励式クエンチング方式になっています。調整の様子です。いつもは電波信号源にＧＤＭを使うのですが、壊れてしまったのでＮＷＴ－１５０のＶＦＯ出力をアダプタで変調を掛けてテストしました。ＶＦＯの周波数は１２０．５ＭＨｚに設定しました。超再生受信機の感度はクエンチング周期とクエンチング発振波形に左右されます。他励式クエンチングは調整がしやすいです。ＶＦＯの出力に変調を掛けてそれ...超再生受信機（回路）の再調整
This project talks about how RTL-Software Defined Radio dongles can easily perform the function of an SDR receiver using an Android smartphone.
RF Signal Generator: The RF signal generator is a must to have tool when playing with radio receivers. It is used to tune a resonant circuits and adjust the gain of different RF stages. Very useful feature of the RF Signal generator is its modulation capability. If it c…
Spontaflex HF Radio Receiver - The Listeners Read more about capacitor, circuit, audio, coil, tuning and amplifier.
