Tuesday, June 13, 2017

LZ1DPN-CW3 14 MHz CW Transceiver

UNDERCONSTRUCTION!
I have some problems with DDS made from Si570. When connect transmitter
DDS becomes unstable. I will need more time , or redesign DDS with AD9833.






Front panel:



First module - VFO (freq. oscillator) and transceiver control:


Receiver module with NE602 mixers and crystal BFO:


Audio:


Receiver modules:


RF Transmitter 0.5W:




Enclosure (120x95x40):


Tests:

 



 First receive test:



SCHEMA (with 0.5W RF Power):
http://www.schematics.com/project/lz1dpn-cw3-swl-sw20-57798/




ALL SOURCES AND SCHEMATICS:  
https://github.com/LZ1DPN/LZ1DPN-CW3/ 


73 ES MNI DX'es!LZ1DPN