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HomeRC & Power✈️Aircraft🚁HelicopterRadio - Servo - Gyro - Gov - Batt › digital servos and a fm reciever?
07-20-2006 12:50 AM  14 years ago
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rcingcrazy

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florida

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digital servos and a fm reciever?
took out pcm reciever out of my heli to use it on a
33 percent plane,,,
i got several fm recivers the only thing is
my rappy is fitted with 9252`s all around
and 401 with 9254 on tail...
never used a fm receiver with digis before
my ? is ,is ther a problem with interfirnce
with the hum the digis throw out
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07-20-2006 01:24 AM  14 years ago
Chief_USN

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Chesapeake, VA

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I'm running all 3151 digital and 401/9254 with my 7CHP on FM with no issues. I know that the 3151s aren't the quality of 9252's but they are still digital.

Chad
Team HeliProz 12-14
US Navy Chiefs...Unity, Service, & Navigation to the Fleet since 1893
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07-20-2006 03:26 AM  14 years ago
bassist

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Oklahoma

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I switched to all PCM, I save the FM's for the plankers I wanna crash.
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07-20-2006 04:12 AM  14 years ago
dkshema

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Cedar Rapids, IA

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DS811's, a 9254 and a JR 7 channel FM RX, no problem. On its third season.
DS8231's, 9254, and a JR 7 channel FM RX, no problem. On its third season.
DS537's and JR 6 channel FM RX, no problem. On its second season.
DS811s, DS821, 9254, and a JR 6 channel universal FM RX, no problems.

Go fly.

Dave
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07-20-2006 09:45 AM  14 years ago
PaulJC

rrElite Veteran

Hertfordshire UK

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You should have no problems at allRe-entering the atmosphere...
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07-20-2006 01:31 PM  14 years ago
BarracudaHockey

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Jacksonville FL

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The servos don't know or care what type of reciever, once the signal is decoded its all about how wide the pulse width is as to how far the servo moves, the digital amp in the servo just tells the motor where to be more times per second.Andy
AMA 77227
http://www.jaxrc.com
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07-20-2006 06:31 PM  14 years ago
Ilkka

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Oulu, Finland

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Actually I would only use digitals with PCM receivers due to the following two reasons:

1) PPM signal is not as accurate from controlling point of view as is PCM. PPM always suffers little bit from radio "issues". Why to use high quality precision digitals with poor control signal?

2) Whenever there is a PPM glitch servo might run into binding situation. Low power analog servos are more tolerable for this and it's sad to destroy good digital one due to this. PCM's failsafe will prevent this.

Just my five cents..

Cheers, Ilkka

btw. Why people often speak about FM when they mean actually PPM receivers? PCM also utilizes Frequency Modulation (FM) but the infromation coding is different...
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07-21-2006 01:11 AM  14 years ago
rcingcrazy

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florida

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thanks for the input,,,thought i would ask before i did anything
allwasys thouht digis and fm recievers were a no,no
will give it a try....thanks for the replys
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HomeRC & Power✈️Aircraft🚁HelicopterRadio - Servo - Gyro - Gov - Batt › digital servos and a fm reciever?
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