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Old Sep 05, 2012, 06:29 PM
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Thanks for the answers guys.
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Old Sep 05, 2012, 11:49 PM
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South Africa, LP, Polokwane
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Thank you will give it a go.
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Old Sep 06, 2012, 10:50 AM
↓↘→ + (punch)
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central PA.
Joined Sep 2004
20,246 Posts
due to the receiver not being able to drive a servo while being programmed, other servo matching devices are quicker and easier to use, and will also allow you to set the end-points. JR Matchbox and Futaba MSA-10 are what I've used, work pretty well. Obviously they're also around $60-70 each... JR's can be bought in pairs. Match up to four servos on a channel.

...but this is just to tide us over until the XPS's auto-matching receivers and break-out board arrive. The world will get turned on its head for ease of setup of giant scale planes. I seriously can't wait, will be so nice. I look forward to selling my matchboxen...
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Old Sep 16, 2012, 11:33 AM
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South Africa, LP, Polokwane
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If I use two nanos as master slave and have for example two elevator servos where I use channel 2 for one servo and say channel 8 on the slave receiver mapped as channel 2 but I want to reverse one of the channel 2 outputs.
Can anyone help, I dont see anywhere on the XDP a servo reverse?
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Old Sep 16, 2012, 11:50 PM
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Gilbert, Az
Joined Jun 1999
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click on failsafe
Bob
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Old Sep 17, 2012, 01:09 AM
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South Africa, LP, Polokwane
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Thanks Bob, found it but even when I click in reverse it does not reverse I still have one elevator moving up and the other down have also tried hold, user and off and no go.
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Old Sep 17, 2012, 12:03 PM
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South Africa, LP, Polokwane
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My mistake, all working 100%
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Old Sep 20, 2012, 01:28 PM
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United States, UT
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How close can i install two nanos? Do i have to follow the 2" rule?
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Old Sep 21, 2012, 11:00 AM
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Upper Arlington, Ohio
Joined Dec 2007
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It is truly remarkable. I was a little skeptical about installing something that small in my glow ship but it works great.

How is it that XPS is able to get away with two antennae so close to each other without the concerns that they be perpendicular and in different planes?
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Old Sep 21, 2012, 12:50 PM
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The Villages, Florida
Joined May 2003
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Quote:
Originally Posted by RyanNX211 View Post
It is truly remarkable. I was a little skeptical about installing something that small in my glow ship but it works great.

How is it that XPS is able to get away with two antennae so close to each other without the concerns that they be perpendicular and in different planes?
Are you talking about the two "whiskers" coming out of ONE receiver ??

If so, those two whiskers is actually make up ONE antenna, not two.....
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Old Sep 22, 2012, 12:43 AM
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Upper Arlington, Ohio
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Quote:
Originally Posted by JuanRodriguez View Post
Are you talking about the two "whiskers" coming out of ONE receiver ??

If so, those two whiskers is actually make up ONE antenna, not two.....
That is even more remarkable. How is this possible? Most manufacturers use two or more.
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Old Sep 22, 2012, 12:52 AM
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Quote:
Originally Posted by JuanRodriguez View Post
Are you talking about the two "whiskers" coming out of ONE receiver ??

If so, those two whiskers is actually make up ONE antenna, not two.....
That is even more remarkable. How is this possible? Most manufacturers use two or more.
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Old Sep 22, 2012, 06:48 AM
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Originally Posted by RyanNX211 View Post
That is even more remarkable. How is this possible? Most manufacturers use two or more.
In layman's terms, it's "magic"......

But I'm sure someone will provide a technical explanation neither one of us is going to understand anyway.....
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Old Sep 22, 2012, 08:16 AM
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USA, CT, Bethany
Joined Mar 2004
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I think it's a dipole design
http://en.wikipedia.org/wiki/Dipole_antenna
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Old Sep 26, 2012, 11:26 AM
Xtreme Power Systems
Lake Havasu, AZ
Joined Jun 2005
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Our 'ears' are far more sensitive than any others. Our Nano receivers have a sensitivity of -102dBm. Compare that to the Spektrum receivers using the 6934 at -90dBm. Every 6dB doubles the range. So 12dBm difference is 4 times the range. That is real range too, so if your -90dBm receiver is getting 2000 feet, you get 8000 feet if it was -102dBm. Our new receivers using the DivBee module are -107dBm in diversity mode, and -109dBm in single antenna mode. Our original receivers are -100dBm. Outputting higher power is not the answer to increasing range. First of all, the FCC does not like 'remote' devices to have more than 100mw of power, and you are required to warn people that you must be no less than 8" away from the tip of the antenna. It takes 4 times the power to double the range. That is a LOT of power for very little gain, so I focused on receiver sensitivity (combined of course with signal rejection) to increase the range. The Nano was my first attempt at designing 2.4GHz RF hardware, and the results are quite incredible. The DivBee is an even bigger jump.
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