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Futaba R617FS 2.4GHz Receiver ANTENNA placement ??

Old 04-19-2008, 10:09 PM
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floridawen
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Question Futaba R617FS 2.4GHz Receiver ANTENNA placement ??

In the Futaba 7C manual (page 17) it shows that the two antennas on the R617FS 2.4GHz Receiver should be placed 90 degrees to each other, either in a 90 degree “V” shape or one straight out and the other at a 90 degree right angle to that other lead. I am installing this receiver in a small foamy’s fuselage that is sort of “hollowed out” but has no room to place the antennas in either of the two suggested placements.

WHAT TO DO ?? Drill small holes through the foam fuselage and push them through in some sort of 90 degree fashion ?? What will happen if they are placed in parallel to each other inside the fuselage ??

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Old 04-19-2008, 10:31 PM
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RocketMan
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I just try and make the antennas point in as different directions as possible and I haven't had any problems. Make sure you do the range test in power down mode to test it.

RM
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Old 04-19-2008, 11:16 PM
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floridawen
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Question

Originally Posted by RocketMan View Post
I just try and make the antennas point in as different directions as possible and I haven't had any problems. Make sure you do the range test in power down mode to test it.

RM
How many "feet away" should I be, about 100 feet or more?

Is this what they mean by walking "30 paces" away from the aircraft to test range?

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Old 04-20-2008, 12:31 AM
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Originally Posted by floridawen View Post
How many "feet away" should I be, about 100 feet or more?

Is this what they mean by walking "30 paces" away from the aircraft to test range?

Just walk back for a total of 30 paces, WHILE using the Tx to move all control surfaces. Don't just walk back 30 paces and then perform the range check. But yes, this is what they mean when they say "range test".

I hope you figure out how to install your Rx. Wish I could be more help in that department, but I'm still flying her stock. Good luck friend.

Mike
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Old 04-20-2008, 01:02 AM
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rcers
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BTW - In a small foamie - it simply won't matter how you put the antenna wires. 90 degree orientation is important for larger models, but I have done everything but braid them together with good results!

MIke
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Old 04-26-2008, 10:13 AM
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Old Sloppy
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Here is what I did on my heli.

Harry
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Old 04-26-2008, 11:07 AM
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Originally Posted by Old Sloppy View Post
Here is what I did on my heli.

Harry
Wow, that worked out great for you !! You were able to spread the antenna leads out at close to 90 degrees like specified. Looks good too.

I have a 1" wide by 4" deep "carve out" in a hollow foamy fuselage that made it difficult, but I did it, I put one lead straight out and the other "bent" at 90 degrees to it. Retained the leads securely with stick-on velcro. I am still waiting to do a LONG range test to tell if it was 100% successful !!
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Old 04-26-2008, 02:37 PM
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So when do you plan on maidening that bird friend?

Mike
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Old 06-08-2008, 05:38 PM
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Any update on this thread?

I would like to hear more.

Harry
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Old 06-08-2008, 05:48 PM
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Originally Posted by Old Sloppy View Post
Any update on this thread?

I would like to hear more.

Harry
YES........ I maidened the Cessna on a very windy day (I SHOULD HAVE WAITED BUT FOOLISHLY DIDN'T !!) and the poor foamy caught a 20+ MPH "gust" and blew away (out of control) like a Styrofoam plate in the wind....... just spiraled out of control and my trying to "regain" ANY sort of surface control was totally useless. I can re-create the whole experience on my RealFlight G4 simulator by turning the wind up to 25 MPH !! (If ya' got G4, be a maniac and turn the wind up to 50 MPH and then see if even you can stand up, as the chair, cooler, umbrella and airplane "hurricane" across the flying field !!)
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Old 06-08-2008, 05:59 PM
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I was hoping for some good news..

Harry
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Old 06-08-2008, 06:09 PM
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Build Review Serious NOW !!

To be serious now.......... that Antenna arrangement (90 degree opposed) worked out great on a range check in the Cessna and I do a very similar method of mounting the antenna in an ElectriStar I now have. I have much more room in the ElectriStar so the receiver is mounted "flat" onto a "shelf" that also holds servos, battery, etc. One Antenna lead goes up vertical and the other works it's way horizontal. You gotta see a picture to know what I mean:
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