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Re: CAn anyone help me? I want to build an FM Rx with TDA700
Lets say IF is on 70Khz and it is 100Khz(+-) wide, you can use simple
Manchester coding modem and youll get 19200-38400bps.
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http://www.qsl.net/ok0ns/technics.html#ManModem...
Re: CAn anyone help me? I want to build an FM Rx with TDA700
Try to use demodulated signal from pin 4
just unsolder condensator from Vpp line, youll get nice unfiltered demodulated
signal.
Maybe afc will be problem, you have to try.
Or use TDA7021 (KA22429) and demodulated signal from pin 1
Hello !
Maybe offtopic but need little help.
This forum is visited by many designer in that field.
Recently I bought, for some radio experiment, cheap PCI wlan card,
Atheros chip, TP-Link, model WN650G.
If anyone can tell me where I can find schema of front-end.
So confused front-end I never...
Re: antenna position
well, I dont think so.
Usualy radio listeners are in car, truck, buses, so antennas in or on are vertical,
that mean TX must be vertical too for better reception.
Muptipath from ground isnt inportant when you are in moving car, there is
always some multipath.
Cooper protection
For amateur use silver plating is expencive, so how to protect cooper in some
stripline circuit or patched antennas in home made "production" ?
For microwave especialy.
How cooper oxside perform to microwave (1-6Ghz) ?
Is ist better to leave it clean or protect it with thin...
fr4 pcb frequency
Well known Slovenian radio-amateur, dr. Matjaz Vidmar, S53MV, use FR4 for
his SHF radios up to 10ghz.
All text you can find at:
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There is no converting BMP in circad file.
Read "CirCad" manual, BMP picture is in background.
Over it you can place pads and or components and routing
manualy.
spdt lna
Hi!
Im searching for one RF device to modify my radio project.
T/R antenna switch with LNA integrated in the same package.
Something like
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Unfortunatly Hittite havent it in production anymore.
Maybe some other manufacturer make the similar thing ?
Freq. up to...
Hi!
For amateur use and home made MW PCB what is better ?
Can I use coplanar lines without lots of vias to other side
(thruhole to gnd) ?
Thruhole metallisation is still big probem for home PCBs !
Thanks !
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