The T03DSP High Performance Transceiver with DSP IF processing

Designed by Oleg Skydan UR3IQO

The Second LO Board

The second LO board contains XTAL oscillator (10.034 MHz) and buffer amplifier.

The oscillator is made on the low noise JFET. I had to use a very old crystal (manufactured in the 1960 year :), since is has a very large crystal and easy opening carbolite case, because I was unable to find the crystal with the necessary frequency, so I polished 10MHz crystal until its frequency raised to 10.034 MHz.

The emitter follower at the output provides the necessary matching with the coax line.

The schematics of the second LO board is here.

All materials provided here are copyright by Oleg Skydan. In all cases, materials are provided for the purpose of self education and training in Amateur Radio. No use may be make for commercial purposes without permission of the author. Please send any comments and questions to Oleg Skydan UR3IQO.
Send mail

Made in Ukraine