HomeBrew modified EK1A (Small Wonder Labs SW40 China cloning) CW QRP transceiver
SOME PICTURES:
FIRST TEST VIDEO:
LAST VIDEO:
Schematic diagram (now transceiver have another one stage at RF amplifier with IRF510 - like my other CW projects):
http://www.schematics.com/project/ek1a-lz1dpn-46277/
5W PA - Part from Farhan's JBOT amplifier (this amplifier is not used now):
With this LPF and PA, now transceiver work well in transmit mode on 3.5 , 5, 7, 10 MHz for other band You should to recalculate LPF ( http://www.calculatoredge.com/electronics/ch pi low pass.htm ).
ALL SCHEMATICS AND SOURCES:
https://github.com/LZ1DPN/CWTRX0to30MHzv2/
Components price: ~50$ from ebay
73 ES MNI DX'es!LZ7DP
