hi, im starting out my first mayjor radio project. what i want to build is a long range high frequency transmitter and receiver, or at least a transmitter anyway. what i want it to do is be able to transmit a frequency across its signal, essentially like music and such, for testing.
eventually i want to use it for pwm control for a remote stepper motor on a rc project.
ive been looking into 433mhz modules, and even bought a few, but they dont seem to work the way i want, for instance, i have one which has a range of about 20cm, within 5cm of the antenna, i get a full on signal, beyond that it turns on and off at changing frequencies, mostly around 6hz. i think it doesnt work the way i want, instead i think it uses data bursts rather than plain frequency signals.
in any case, i cant find any good projects which work long range but also have multiple channels.
thats the second part. i want to have a good amount of channels between the receiver and transmitter, simply for other things, one of them idealy ide like to be a video feed.
which brings me to another thing, i need multiple channels to be useable simultaneously, preferably 4, but if thats too complex, 2 is fine.
could anyone suggest me a good schematic for what im looking for? or a reasonably cheap receiver and transmitter pair?
thanks!
eventually i want to use it for pwm control for a remote stepper motor on a rc project.
ive been looking into 433mhz modules, and even bought a few, but they dont seem to work the way i want, for instance, i have one which has a range of about 20cm, within 5cm of the antenna, i get a full on signal, beyond that it turns on and off at changing frequencies, mostly around 6hz. i think it doesnt work the way i want, instead i think it uses data bursts rather than plain frequency signals.
in any case, i cant find any good projects which work long range but also have multiple channels.
thats the second part. i want to have a good amount of channels between the receiver and transmitter, simply for other things, one of them idealy ide like to be a video feed.
which brings me to another thing, i need multiple channels to be useable simultaneously, preferably 4, but if thats too complex, 2 is fine.
could anyone suggest me a good schematic for what im looking for? or a reasonably cheap receiver and transmitter pair?
thanks!