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Everything posted by Raptor30

  1. the word is the astro flight 109 ($125)is very good and the schulse 6330 (or something like that) is even better and of course even more expensive ($220) they say Triton is slow as sh*t comparatively and hobbico doesn't fully charge
  2. why does a 3 watt Tx costs so much more than a 500mW Tx?? i may be wrong but don't they both cost nearly the same to make??
  3. what exactly sete the freq in a Tx and a Rx? in other words, what one component or transister, i guess, can be swapped out with a component of a different value to change what freq a transmiter transmits on and a receiver receives on?
  4. they look exactly like the cheap 1.2GHz models off of ebay...it's as if he's buying them and modified them to 900MHz and 2.4GHz and uping the output. i mean, EVERYTHING else is the same, cases, 4 channel switch, color... and the one he sells as a pcb board is likely just one he removed the case from. what are your thoughts?
  5. i'm trying to find a 'smart', fast, and cheap LiPo charger that can do any number of cells.. anyone have a favorite?
  6. yup, the antennas on cell towers are not designed for anything but ground signals not to mention cell phones are just extremely complicated radios that transmit at the power of about half a watt.
  7. they are also available by themselves (not integrated with thier own receiver). the new one has more options and IMO is better.
  8. i've got this little 3 stage fm transmitter i put together and with it came this 'tester' circuit (peaking circuit) which "is simply an RF detector that uses diodes to charge a capacitor" anyway i put it on my 9CAP's antenna and hooked the other end to a speaker. after that it made a low humming niose that CHANGED pitch as each joystick was moved. can a circuit be built that will cange the carrier wave's freq w/out losing/changing the signal and then have another circuit built that changes it back to how it was orriginally. they're both frequency modulated, just at different frequencies..so why can't a circuit be built to change it's (the Tx's) freq. to an audiable freq. -> send it through the phone then -> a seperate cicuit translates it back to 72.xxx MHz?? it's seems like it should be so simple (and cheap )to do this..am i missing something here??
  9. you make some very good points but wouldn't the output from the antenna of your Tx look like that of your speaker?? i think it would exept of course they're operating at different frequencies.. so what if you could convert that signal (from the Tx ant.) to something that could pass through the circuitry of the cell phone's mic input without frying it and then, from the output of the heli's cell, convert it back to 72.xxxMHz. you're absolutely right when you said the stream from the Tx BEFORE it gets to the antenna is like apples to oranges to what a speaker's output looks like. BUT if you take it from the antenna instead it would be similar but just at a different freq, right?? is it possible to do it this way or not?
  10. yea, i'll pay no problem but there has to be a well defined fully working system first that can send control and receive video at a decent framerate while still being cost effective by still just using your cell phone minutes. if anyone can do it i'm all for it. i don't understand why a component can't be bought for a cell phone so that it transmits at 56K like everything else. why are we limmited to 9.6k? i'll do whatever it takes to get a system like this working that doesn't use RF. do you realize how cool it would be to just be able to sit in you house and fly ANYWHERE? w/out worring about your RF signal fading away, your only limmitation being how much gas you have? not only that, the person who accomplishes this will have every R/C hobbiest knocking on thier door wanting to buy one. it will make all this RF equipment obsolete..i beleive opening this door would be followed by some quite amazing possibilities
  11. i read about what you and cyber flyer are try to do and from what i understand u've been partially successful. would sending/encoding the Tx pusle string at a live rate be possible at this point or is this even harder than what you're trying to do w/ cyber-flyer? you stated earlier that i would likely need a 17k+ packet rate to accomplish this and from what i understand current technology only allows 9600baud. if this is true using a sat phone would be the answer...i guess. i need to figure out the right path to take to successfully turn this idea into reality in the cheapest, simplist way. what components would i need? how would they be wired together? still, though what if you could encode the pulse string into a series of beeps that way they could just be fed, live through the cell's audio and then decoded back into a small simple Tx on the heli? i understand what you're trying to do and the method you're trying to use. what i don't understand is, while even though my idea has more steps, why it couldn't work. you would find which 2 holes (on the buddy port of th Tx) are positive and ground and just wire them directly in place of the mic on phone on the ground. on the heli wouldn't you just take the 2 speaker wires from the cell phone and wire them directly to the mic input of a radio Tx modified to transmit on the freq the heli receives on? right? why wouldn't that method also work?!? it sure as heck would be very cheap and simple...anyway i know you're much more experienced with these things and in the end your answer will probobly be the right answer but i can't give up on this idea until i know exactly why i wouldn't work..
  12. could you explain, in more detail how your prototype works? from what i gather you're encoding the data via the trainer port to a packet format so it can be sent over the internet..but i don't understand your problem thoroughly..you can't get it encoded fast enough to be real-time? im sure i could help you out if i can get up to speed. also my receiver is not PCM. couldn't the RF waves be reproduced from audio?couldn't it be just that simple? couldn't you just have a radio set to receive on 72.xxxMHz and wire it's speaker to the mic of the phone and then on the heli have a transmitter that takes that audio and turns it back into the exact same RF waves? couldn't it be just that simple without going digital and messing around with all that other stuff?
  13. all i would need is a regular cell phone and some device that can translate the RF into audio (so it could go to the cell on the heli) and then back to RF and that would be the end of it. if it's possible to do what im asking i shouldn't need a sat phone or a cell modem. i'm not at all worried about dropped calls or the cost of getting a more expensive cell phone plan. it's all WELL worth that risk if it's possible. so the key question again is; CAN AN RF SIGNAL BE TRANSLATED TO AUDIO AND THEN TRANSLATED BACK? no satellite phone, no cell modem, nothing but a device that will encode the rf into audio and another device on the heli that will do the opposite. if it can be done, i'd love to know how. if it can't then i'll drop the whole idea and start screwing around with antennas, transmitters and ground control setups like everyone else..
  14. i can't see how it would cost more than all the stuff you would need for good FPV or to have a good UAV helicopter ststem. just look at all the work and especially money that went into cyber-flyer's setup. think of what you would get; unlimited range; sit in your living room and fly ANYWHERE you want as long as you have enough gas for it. no worrying about trees, buildings interfering with your RF signal or how far away your heli is. IF IT IS POSSIBLE (to send control and receive a/v via a cell phone), IT WOULD BE, BY FAR, MUCH, MUCH BETTER THAN ANY RF SYSTEM. ps, if you did figure out all the details of what it would take to do it please let us know...
  15. you would just need co-pilot and altitude hold to turn on while you redial the #
  16. yea, thats a lot closer to what i'm trying to do (it's actually simpler) but i want to use my remote instead of push buttons....u can't fly a helicopter with buttons..
  17. so i would have to use a cell-modem? lets forget about the video for now.. and focus on the helicopter's controls. i need a simple, cheap way to have unlimited range and a figured a cell phone would would be the best way...the only problem, i figured, would be to translate the RF waves to audio so they could travel through the cell phone. so the key question is, can RF waves be translated to audio then back again in a SIMPLE, CHEAP way?! ...thanks for the links by the way
  18. can RF be translated into audio and then back to RF?? if it could, couldn't you use a cell phone (on the Heli) set on auto answer to send controls from the ground and send A/V from the Heli? Furher explanation: On the ground-- u've got a Futaba 9C with a radio next to with that has a crystal plugged into it (on the same channel as the Tx) so that it receives what the 9CHP is transmitting and is naturally converting it to audio which is being fed into the mic input of your home phone which you use to dial up the cell phone that would be on the Heli In th air -- u've got the cell phone with it's speaker being tapped by something that would covert the audio back into RF which is broadcasted to the Rx (which is only like 2 inches away). The A/V would be going the other way (frome the cell phone mic to the home phone's speaker. i know there's gotta be something about this that makes it impossible..
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