[hpsdr] [OT] YU1LM webpage with cool SDR designs

[Ken N9VV]

http://www.qsl.net/yu1lm/homebrew.htm

JULY 2006 HOMEBREW

  All 4 new design are based on use 74HC4053 IC as S/H (sample and 
hold ) element in demodulators , modulator and transceiver.

1. SDR HF I/Q S/H (Sample and Hold) Receiver-DR3X from 30 kHz-35 MHz 
  for 3 bands harmonically related with 1(one)  oscillator or 1 XTAL

2.SDR HF I/Q S/H (Sample and Hold)  Receiver - DR2B from 30 kHz- 35 
MHz with external LO (local oscillator)

3.SDR HF I/Q S/H (Sample and Hold) Mono band Receiver - DR2C from 30 
kHz- 50 MHz with LO (local oscillator) at receiving  frequency

4. Low power SDR HF I/Q S/H (Sample and Hold) transceiver- ADTRX1 
from 30 kHz-35 MHz with external LO- part1

5. New SDR Photo gallery

6. Forum devoted to my SDR design

http://www.qrpforum.de/thread.php?threadid=987