Welcome to the thermionic website
Devoted to electronic valves [also known as tubes], valve radio circuits and equipment
|about & disclaimer||
This picture shows an 813 based Hartley oscillator transmitter being tested with a makeshift power supply.
This transmitter was intended for the 160m (1.81-2.0 MHz) Amateur Radio band.
I dismantled it after a slightly disappointing period of testing and made another version using an 812A triode. This one works a whole lot better.
You can read more about this project and some others on my projects page.
|Sansui HiFi receiver|
"TR40" (stalled :)
|copyright (c) AJB 2001-3
22nd July 2003