A demonstration of a homebrew receiver designed for SSB/CW reception and published in Lo-Key magazine December 2007.
RF Amp: BC547
Mixer: 3N140 (FET)
Local osc: 74HC04
Xtal filter: 4.434 MHz (3 xtals)
IF amp: BC547
Det: 1N414 x 2
BFO: BC547 x 2
AF preamp & amp: TDA2822
Demonstration is tuning 40 metres (7 MHz) at 3:30pm from Melbourne, Victoria.
where can one find the schematics and board designs if they exist? I can't get the Lo-Key Magazine here in Spain. I suggest you publish all those equipment in your website, they can raise a lot of interest...
ec5aca 10 months ago
yo8rqp, it was at midday (3pm) typical noise at that hour...
ec5aca 10 months ago
heavy noise ruins demo!!!!!!!! or is it bad dssign?????
randeddy 1 year ago
it,a bad rig because your noise it,s strong.i construct homemade with direct conversion verry good.i using in trafic.73s de yo8rqp,romania
yo8rqp 2 years ago
Ime very struck by the variety off kit you demonstrate.
Great channel "vk3ye" 5 stars
stuartthegrant 2 years ago
Nice receiver !
LW2EQS 2 years ago
it so great!
lowerruralruler 3 years ago