POSITIVE/NEGATIVE SHIFT TRANSMITTERS
08-27-2005, 08:25 AM
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POSITIVE/NEGATIVE SHIFT TRANSMITTERS
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Another Question - What is the standard regarding Positive & Negative Shift Rc Transmitters? I'm using a Futaba 9C transmitter, would like to try a Royal, they seem to have different shifts specifications. I assume when you purchase receivers they must match the transmitter (same shift) being used (as well as operating Band - Freq and Mode). Any input would be helpful!
Thanks,
Phillip
08-27-2005, 09:23 AM
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RE: POSITIVE/NEGATIVE SHIFT TRANSMITTERS
it depends on the reciever. you can get a dual shift reciever and crystal and it will work with either radio
08-31-2005, 07:02 AM
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RE: POSITIVE/NEGATIVE SHIFT TRANSMITTERS
Futaba and Hitec use negitive, Airtronics and JR are positive.
You can use a Polk Seeker-II or Seeker6 with either,
as well as the Hitec Universal flight pack which has a shift selectable Supreme SS receiver
You can use a Polk Seeker-II or Seeker6 with either,
as well as the Hitec Universal flight pack which has a shift selectable Supreme SS receiver
08-31-2005, 01:16 PM
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RE: POSITIVE/NEGATIVE SHIFT TRANSMITTERS
I'm not familiar with either the 9C or the Royal, however, some transmitters (Such as the Hitec Eclipse 7 or Airtronics RD6000/8000) are shift selectable.
08-31-2005, 07:13 PM
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RE: POSITIVE/NEGATIVE SHIFT TRANSMITTERS
ORIGINAL: hydravien
it depends on the reciever. you can get a dual shift reciever and crystal and it will work with either radio
it depends on the reciever. you can get a dual shift reciever and crystal and it will work with either radio
Would anyone else like to explain more about positive / negative shift please?
09-01-2005, 11:44 AM
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RE: POSITIVE/NEGATIVE SHIFT TRANSMITTERS
Dual conversion is a receiver that uses 2 RF stages to lock on the FM signal. It allows a tighter lock on a frequency and rejects interferance better.
For outside flying at distances we play with, dual conversion is the way to go. Single conversion is usually used for indoor electric flight.
Negitive/positive shift has to do with the actual signal sent from transmitter to receiver. The Waverform sent from TX to RX encodes the
position of each transmitter channel. Positive/negitive shift has to do with the shaping of the information on the radio signal.
You need a receiver that expects the same signal, or a shift selectable receiver such as the Hitec SS Supreme or Polk.
Sorry to any serious electronics types out there for murdering teh shift explaination, but that is the simple way to look at it.
For outside flying at distances we play with, dual conversion is the way to go. Single conversion is usually used for indoor electric flight.
Negitive/positive shift has to do with the actual signal sent from transmitter to receiver. The Waverform sent from TX to RX encodes the
position of each transmitter channel. Positive/negitive shift has to do with the shaping of the information on the radio signal.
You need a receiver that expects the same signal, or a shift selectable receiver such as the Hitec SS Supreme or Polk.
Sorry to any serious electronics types out there for murdering teh shift explaination, but that is the simple way to look at it.
09-10-2005, 08:32 AM
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RE: POSITIVE/NEGATIVE SHIFT TRANSMITTERS
My Airtronics RD 6000 Super is shift selectable as well as my reciver from hitec, didn't know the xmiter was untill I was messing around with it one day and saw the PPM R setting on it.
Pat
Pat
