hey all, ive completed my max2606 fm transmitter project.. It is very stable vs the other schematics ive tried to replicate.
incase anyone curious.. http://forum.allaboutcircuits.com/showthread.php?t=94229
Ive been had it energized for 5 days continuously now, still exactly 87.5fm. The range however, seems a bit disappointing. I can get the transmitter to work about 7 feet max with perfect conditions.
Id like at least 40 feet to reach my shed, where i tinker on stuff.. I originally tried this transmitter i found for the stability, as this is for a friend, and she wont want to(cant) "fine tune" it all the time from drift as the others ive built suffer from..
My antenna is a 12" piece of wire(suggested to not break fcc laws?), that seems to hardly anything.. no antenna gets around 3' range(rotated just right).
now i said 40 feet, which seems low in the realm of transmitters imho.. bestbuy and walmart sell ones(many actually) for 60 bux( minimum price it seems) with fancy illuminated led displays that transmit about 150ft.. my buddy has the cheapest one the sold, and weve tested it down my drive way
Ive found this..
http://www.electronics-lab.com/projects/rf/015/FM_transmitter_Schematic.png
may i ask whats going on here? as in what is the benefit of having the max4467 feeding the tune terminal on the max 2606? vs the circuit ive replicated here: http://www.electroschematics.com/wp-content/uploads/2008/04/stereo-mini-transmitter-max2606.gif
Any way i can boost the power of my existing circuit? maybe a different antenna?? if not , maybe a small fm booster circuit compatible with a max2606? Id hate to scrap the board design time, soldering etc..
Thanks guys!
incase anyone curious.. http://forum.allaboutcircuits.com/showthread.php?t=94229
Ive been had it energized for 5 days continuously now, still exactly 87.5fm. The range however, seems a bit disappointing. I can get the transmitter to work about 7 feet max with perfect conditions.
Id like at least 40 feet to reach my shed, where i tinker on stuff.. I originally tried this transmitter i found for the stability, as this is for a friend, and she wont want to(cant) "fine tune" it all the time from drift as the others ive built suffer from..
My antenna is a 12" piece of wire(suggested to not break fcc laws?), that seems to hardly anything.. no antenna gets around 3' range(rotated just right).
now i said 40 feet, which seems low in the realm of transmitters imho.. bestbuy and walmart sell ones(many actually) for 60 bux( minimum price it seems) with fancy illuminated led displays that transmit about 150ft.. my buddy has the cheapest one the sold, and weve tested it down my drive way
Ive found this..
http://www.electronics-lab.com/projects/rf/015/FM_transmitter_Schematic.png
may i ask whats going on here? as in what is the benefit of having the max4467 feeding the tune terminal on the max 2606? vs the circuit ive replicated here: http://www.electroschematics.com/wp-content/uploads/2008/04/stereo-mini-transmitter-max2606.gif
Any way i can boost the power of my existing circuit? maybe a different antenna?? if not , maybe a small fm booster circuit compatible with a max2606? Id hate to scrap the board design time, soldering etc..
Thanks guys!