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reciever/transmitter compability
I have a 27% Somenzini Yak 54 and a Futaba 6EXA computer radio. The Yak is a gas powered airplane {EVO 26 cc}.
Do I really need a PCM reciever or will a regular FM reciever suffice? What does PCM do for me and do you need it for a gas engine? |
RE: reciever/transmitter compability
Considering the size, weight, and cost of your plane, I'd go for a PCM receiver. This is assuming that you have the new 6EXAS, not the original one, right?
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RE: reciever/transmitter compability
I've been flying gas engines, magneto and EI for over 7 years on FM. So far, I have survived without PCM. You will get a lot of firmly held opinion, beliefs and threats on the subject. BTW, your engine is the Evolution 26? I don't belive EVO makes that size engine, or do they?[sm=confused.gif]
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RE: reciever/transmitter compability
I'm not jumping in to say for or against PCM. But I do want to clear up one point. There are two types of modulation that is used PPM and PCM. BOTH of these use FM as the transport signal. Many get confused and thing that they are choosing between FM or PCM, but in reality PCM uses FM. FM is how the signal is transmitted from the transmitter to the receiver. PPM or PCM is the language that the radio speaks to the plane with. There is a bit more involved with the differences between PPM and PCM, but I just wanted to point out that no matter what modulation you use it's still an FM radio.
Ken |
RE: reciever/transmitter compability
ORIGINAL: Jim Dines I've been flying gas engines, magneto and EI for over 7 years on FM. So far, I have survived without PCM. You will get a lot of firmly held opinion, beliefs and threats on the subject. BTW, your engine is the Evolution 26? I don't belive EVO makes that size engine, or do they?[sm=confused.gif] http://www.horizonhobby.com/Products...rodId=EVOE26GT |
RE: reciever/transmitter compability
ORIGINAL: bruce88123 ORIGINAL: Jim Dines I've been flying gas engines, magneto and EI for over 7 years on FM. So far, I have survived without PCM. You will get a lot of firmly held opinion, beliefs and threats on the subject. BTW, your engine is the Evolution 26? I don't belive EVO makes that size engine, or do they?[sm=confused.gif] http://www.horizonhobby.com/Products...rodId=EVOE26GT |
RE: reciever/transmitter compability
Jim
You have confused EVO with Evolution...two different manufacturers. Evolution is Japanese ...EVO is Spanish I believe. Some people mistakenly use EVO as an abbreviation for Evolution. Yes Evoluton has a 26cc gas engine. |
RE: reciever/transmitter compability
Sorry Jim, I also learned as I had never heard of www.evo-engines.com before. :)
I guess we were both kinda correct. |
RE: reciever/transmitter compability
ORIGINAL: mwarren400 Jim You have confused EVO with Evolution...two different manufacturers. Evolution is Japanese ...EVO is Spanish I believe. Some people mistakenly use EVO as an abbreviation for Evolution. Yes Evoluton has a 26cc gas engine. "Some people mistakenly use EVO as an abbreviation for Evolution". No kidding? ;) |
RE: reciever/transmitter compability
ORIGINAL: RCKen I'm not jumping in to say for or against PCM. But I do want to clear up one point. There are two types of modulation that is used PPM and PCM. BOTH of these use FM as the transport signal. Many get confused and thing that they are choosing between FM or PCM, but in reality PCM uses FM. FM is how the signal is transmitted from the transmitter to the receiver. PPM or PCM is the language that the radio speaks to the plane with. There is a bit more involved with the differences between PPM and PCM, but I just wanted to point out that no matter what modulation you use it's still an FM radio. Ken anyway, i can't add anything useful to the thread, just though i'd add kens post again, just incase anyone missed it ;) |
RE: reciever/transmitter compability
yes both pcm and ppm use an fm signal as a carrier.
pcm....Pulse Code Modulation ppm....Pulse Position Modulation pcm is said to be more tollerant to interferrence. pcm is usually preferred over ppm in spark ignition models due to their tollerance to radiated noise from the ignition system. cheers craig |
RE: reciever/transmitter compability
ORIGINAL: hardtop351 yes both pcm and ppm use an fm signal as a carrier. pcm....Pulse Code Modulation ppm....Pulse Position Modulation pcm is said to be more tollerant to interferrence. pcm is usually preferred over ppm in spark ignition models due to their tollerance to radiated noise from the ignition system. cheers craig |
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