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FM and PCM difference?

Old 09-27-2006 | 11:17 AM
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Default FM and PCM difference?

Hi, I own a JR 6102 Tx, I want to buy a flight pack but I have the choice between FM and PCM. What's the difference? And how can I know wich one my Tx uses?

thansk for helping a newbie!

Old 09-27-2006 | 11:29 AM
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Default RE: FM and PCM difference?

Your transmitter should say right on it what type of transmission it uses,
Old 09-27-2006 | 11:35 AM
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Default RE: FM and PCM difference?


ORIGINAL: buzzlightyear
Hi, I own a JR 6102 Tx, I want to buy a flight pack but I have the choice between FM and PCM. What's the difference? And how can I know wich one my Tx uses?

thansk for helping a newbie!
As for which yours uses, look at your transmitter. If you don't see "PCM" anywhere, then you're limited to the FM (non-PCM) receiver, and need not worry about the difference.

If you see "PCM" on your transmitter, then you can choose either. In your case, I would recommend the Non-PCM receiver.

Best wishes,
Dave Olson
Old 09-27-2006 | 11:36 AM
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Default RE: FM and PCM difference?

http://www.horizonhobby.com/ProdInfo...644-manual.pdf
pg 58 explains how to change modulation types. If your transmitter will not allow you to select PCM then it is an FM only transmitter.

An FM flight pack will work with either type transmitter as long as you select the proper modulation on the transmitter.
Old 09-27-2006 | 12:07 PM
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Default RE: FM and PCM difference?

Thanks to all of you, your post helped me!
Old 09-27-2006 | 04:09 PM
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Default RE: FM and PCM difference?

The 6102 is selectable and will transmit both. Get whichever flight pac you want and set the modualtion for that particular model.
Old 09-27-2006 | 04:44 PM
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Default RE: FM and PCM difference?

Is that true of ALL 6102's?
Old 09-27-2006 | 06:29 PM
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Default RE: FM and PCM difference?

I'm not 100% certain, but I have not seen one that does not transmit both?[sm=confused.gif]
Old 09-28-2006 | 02:20 AM
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Default RE: FM and PCM difference?

G'day Mate,
Read your manual, it will tell you how to set it up for PCM, in the system menu Modulation Section, page 26, JR uses SPCM, & that is the way to go, you won't regret it, small extra cost for PCM, but huge advantages over PPM.
Lots of guys will tell you different, but if you go to a pattern or jet guy, he will usually only use PCM. So if it is good for them why not use it too.
Old 09-28-2006 | 07:50 AM
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Default RE: FM and PCM difference?


ORIGINAL: alan0899

G'day Mate,
Read your manual, it will tell you how to set it up for PCM, in the system menu Modulation Section, page 26, JR uses SPCM, & that is the way to go, you won't regret it, small extra cost for PCM, but huge advantages over PPM.
Lots of guys will tell you different, but if you go to a pattern or jet guy, he will usually only use PCM. So if it is good for them why not use it too.
Jets/turbines are required to use PCM or other failsafe due to requirement for auto engine shutdown on loss of signal.
Old 09-28-2006 | 08:13 AM
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Default RE: FM and PCM difference?

While on the subject of the JR 6102... for the fifty bucks it is up the price ladder, a lot of bang comes for that $50. As well as the mentioned modulation choices, it offers a lot more models, and enters the world of mixes and exponential. The settup scheme is also friendlier than the 631.

Old 09-28-2006 | 03:36 PM
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Default RE: FM and PCM difference?

I have one and I really like it! I would love to have the 9303 but for the price, the 6102 is one of the best bang for the buck transmitters out there IMO.
Old 09-29-2006 | 01:57 AM
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Default RE: FM and PCM difference?


ORIGINAL: bruce88123
Jets/turbines are required to use PCM or other failsafe due to requirement for auto engine shutdown on loss of signal.
G'day Bruce,
That's the point, you can't get that with normal PPM.

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