reciever/transmitter compability
07-20-2006 | 07:39 PM
#1
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From: Germantown,
TN
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?
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?
07-20-2006 | 10:11 PM
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From: Keller, TX
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]
07-20-2006 | 10:19 PM
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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
Ken
07-21-2006 | 07:31 AM
#5
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]
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
07-21-2006 | 09:14 AM
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From: Keller, TX
RE: reciever/transmitter compability
ORIGINAL: bruce88123
I'm pretty sure they do Jim
http://www.horizonhobby.com/Products...rodId=EVOE26GT
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]
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
07-21-2006 | 09:27 AM
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From: , NY,
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.
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.
07-21-2006 | 09:59 AM
#8
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.
I guess we were both kinda correct.
07-21-2006 | 05:08 PM
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From: Keller, TX
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.
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?
07-21-2006 | 06:54 PM
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From: Nr. oxford Oxfordshire, UNITED KINGDOM
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
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
, just think, some time ago someone said FM instead of PPM for what ever reason and it's stuck, ahh well anyway, i can't add anything useful to the thread, just though i'd add kens post again, just incase anyone missed it
12-27-2006 | 05:15 AM
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From: rockhampton, AUSTRALIA
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
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
12-27-2006 | 08:30 AM
#12
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
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
