- and + shift receivers? - RCCanada - Canada Radio Controlled Hobby Forum
RCCanada - Canada's Radio Control Hobby Forum
Beginners / Newbies Interested in getting in the hobby. Not sure where to start. Post your questions here and one of the RCCanada experts will be glad to help you out!

Closed Thread
Thread Tools Display Modes
Old 08-22-2004, 02:19 AM   #1
RCC Noob
Join Date: Jul 2004
Location: Mount Hope, Ontario Canada

Feedback: 0 / 0%
Posts: 15
Total Props: 0
- and + shift receivers?

       Remove this ad - become a site supporter!
can someone please tell me what the difference is between + and - shift on recivers? im looking at getting a gws receiver (micro pack) to use on the gws a-10 model (fun foam..lol) anywho im sporting a futaba 9cap and am not sure which "shift" i should be purchasing. all the posts i could find on other forums were saying about usa "positive" etc..well im in canada and this equipment was bought in canada. (and yes i know i have a very advanced radio for just beginning..lol)
bradzilla is offline   Quick reply to this message.

Sponsored Links - Subscribe to remove this ad.
Old 08-22-2004, 02:55 AM   #2
RCC Contributor
Frenchman's Avatar
I am: Rene B
Join Date: Jan 2003
Location: Kitchener Ontario

Feedback: 0 / 0%
Posts: 461
Total Props: 0
I really don't know the difference between positive and negative shift, but I do know that both Hitec and Futaba use negative shifting, and JR and Airtronics use positive shifting. Hitec make what they call a supreme universal receiver which can be either positive or negative shift simply by changing a jumper. They work very well. Just not sure if they make a universal in micro size or not. Hope that helps

MAAC # 68775
Frenchman is offline   Quick reply to this message.
Old 08-22-2004, 07:27 AM   #3
scaleguy's Avatar
I am: JimmyD
Join Date: Nov 2002
Location: Mississauga On, SE Zone
Radio of choice:
JETI Duplex DS-16
# of RCs: 6

Feedback: 30 / 100%
Posts: 13,957
Total Props: 16
As Frenchman said.... Hitec and Futaba use -ve and Airtronics & JR use +ve shift phasing in their systems. So if you have a Futaba TX you will have to buy the -ve shift Rx from GWS.

Check your Tx manual however. Some of the higher end radio systems, like my Airtronics Stylus, have the ability to switch and use either phasing.

Have fun....
Jim Daly
IMAC Sequence Committee Member
Your Friendly Neighborhood SouthEast Zone Director
MAAC #14323L IMAC #3678
scaleguy is offline   Quick reply to this message.
Old 08-22-2004, 08:39 AM   #4
RCC Junior Contributor
Join Date: Feb 2004
Location: Newmarket, ON

Feedback: 0 / 0%
Posts: 197
Total Props: 0
This must be one of the best radio pages I have come accross....


Well worth reading.

To quote from that page (note that carrier means the "advertised frequency" such as channel 50 is 72.790MHz:
The Futaba, Hitec and Tower Hobbies camp are NEGATIVE shift (carrier - 5 Khz)= ON. The Airtronics/ JR camp are POSITIVE shift (carrier + 5 kHz)= ON. Carrier only is OFF for both. For example an Airtronics PPM frame, with all servos at Neutral, would start with 72.075 MHz (ON) for 1.5 m then 72.070 MHz (OFF) for 0.5 ms repeated for 2 - 9 servos and wraps up with 2 ms at 72.070 (OFF) synch.
if only...
gus is offline   Quick reply to this message.
Closed Thread

Quick Reply

Register Now

In order to be able to post messages on the RCCanada - Canada Radio Controlled Hobby Forum forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

Member names may only be composed of alpha-numeric characters. (A-Z and 0-9)

!!ATTENTION ADVERTISERS!! If you intend on advertising anything on this forum, whatsoever, you are required to first contact us here . Additionally, we do NOT allow BUSINESS NAMES unless you are an Authorized Vendor. If you own a business, and want to do sales on this site via posting or private message, you will need to follow the rules. Shops, Stores, Distributors, Group Buys without being authorized will see your account terminated.
User Name:
Please enter a password for your user account. Note that passwords are case-sensitive.
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:
Your Name
Your first name and last initial is required if you plan on using the forum.
Which city & province you live in. This is mandatory for classified listings.
Radio of choice?
Which radio is your current favorite to use?
Number of RC Vehicles?
How many boats, cars, planes do you own?


Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
vBulletin Message

Thread Tools
Display Modes

Forum Jump

All times are GMT -5. The time now is 03:47 AM.

vBulletin Security provided by vBSecurity v2.2.2 (Pro) - vBulletin Mods & Addons Copyright © 2016 DragonByte Technologies Ltd.