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HomeRC & PowerAircraftHelicopterRadio - Futaba FASST › Receiver antennas
10-28-2011 06:45 PM  6 years agoPost 1
504Rone

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New Orleans, LA.

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What are y'all doing with these long antennas?

NO FLYBARS

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10-28-2011 07:28 PM  6 years agoPost 2
carcrasher

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east coast

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Long antennas? The actual antenna is only the last inch.

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10-28-2011 07:43 PM  6 years agoPost 3
504Rone

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New Orleans, LA.

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I know but that part can't touch cf and they don't just stick out.

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10-29-2011 04:58 AM  6 years agoPost 4
Foz

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Earth

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I've routed them with fuel tubing and with pieces of plastic antenna tube. I have also just taped the coax part of the wire to the frame.

Foz

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10-29-2011 05:14 AM  6 years agoPost 5
504Rone

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New Orleans, LA.

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Did you put fuel tubing on the end??

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10-29-2011 05:48 AM  6 years agoPost 6
Foz

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Earth

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The second picture is my 450 where I used fuel tubing. The first picture is of my Furion 6 where I used antenna tube. I stuck one out straight and used a heat gun to bend the other 90 degrees.

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10-29-2011 03:46 PM  6 years agoPost 7
jadams

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East coast USA

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Its Futaba FASST., you don't have to worry about "lockouts ". It can touch CF. Won't affect it at all.. I have seen them taped to frames before without issue.

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10-29-2011 04:30 PM  6 years agoPost 8
504Rone

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New Orleans, LA.

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I thought I saw it taped on bobby watts 450 but I can't find the video.

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10-29-2011 04:57 PM  6 years agoPost 9
Phaedrus

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S. Orange County, California

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Here is how I ran the antennas on my 550.

AMA Leader Member
Go FASST, or Go Home!!
Team Futaba

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10-29-2011 07:55 PM  6 years agoPost 10
rexxigpilot

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Florida

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What are y'all doing with these long antennas?
I just spit my beer all over my keyboard after reading that comment! You obviously were not involved in this hobby when 72, 27 and 50 MHz were the norm. Talk about long antenae!

I usually here this "long antenae" comment from Spekky and JR guys that have those LONG satellite wires and boxy satellites with all those antenae sticking out in every which direction, what a mess!!!!!

I have both Futaba and Spektrum, but I have never heard a less fair complaint about Futaba than the antenae one!

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10-29-2011 08:51 PM  6 years agoPost 11
504Rone

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New Orleans, LA.

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Not a complaint, just curious. Just switched from spectrum. I was using satellite so I never have this problem. Going to maiden 3 cgy750's today. Do want no problems! All 3my helis are new and I would like to keep them that way

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10-30-2011 03:53 AM  6 years agoPost 12
ChuckCLJ

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Arden, NC

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Now, now, let's not turn this into a Futaba vs. Spektrum/JR debate. We all know they are both good systems. Of course Futaba is better, but there both good systems.

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10-30-2011 04:25 AM  6 years agoPost 13
504Rone

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New Orleans, LA.

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Lol...I like both.

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10-30-2011 06:20 AM  6 years agoPost 14
dkshema

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Cedar Rapids, IA

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Its Futaba FASST., you don't have to worry about "lockouts ". It can touch CF. Won't affect it at all.. I have seen them taped to frames before without issue.
Oddly enough, even Futaba hasn't figured out a way to defy the laws of physics and the manner in which radio signals propagate. From the 8FG Super manual:
3. The antennas must be kept away from conductive materials, such as metal, carbon and fuel tank by at least a half inch. The coaxial part of the antennas does not need to follow these guidelines, but do not bend it in a tight radius.
Just because you SEE someone having no problems with their installation, it doesn't mean it's a proper installation.

-----
and used a heat gun to bend the other 90 degrees.
Note the caution above "do not bend it in a tight radius". Using a heatgun to make this possible is a good way to damage the coaxial nature of the cable itself (inner conductor surrounded by a dielectric insulator, surrounded by a braided return wire, surrounded by the outer insulation).

The coax antenna wire depends upon the dielectric insulator separating the inner conductor from the outer conductor to remain intact (to prevent the obvious shorting of inner to outer conductor), and the separation of the two conductors needs to remain constant for the coax cable to maintain its characteristic impedance. The use of a heat gun can easily deform the dielectric insulator and damage the wire to the extent that the antenna no longer performs as it was designed. Be careful out there. As technology advances, so does the need to treat it with respect.

-----
Dave

* Making the World Better -- One Helicopter at a time! *

Team Heliproz

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10-30-2011 03:57 PM  6 years agoPost 15
Four Stroker

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Atlanta

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Phaedrus;

I like your antennas ! Perfect for an electric. I'm going to send a guy this link.

What Dave said. It's micro coax. Don't abuse it.

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10-31-2011 05:47 AM  6 years agoPost 16
Foz

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Earth

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Note the caution above "do not bend it in a tight radius". Using a heatgun to make this possible is a good way to damage the coaxial nature of the cable itself (inner conductor surrounded by a dielectric insulator, surrounded by a braided return wire, surrounded by the outer insulation).
I should have been more clear. I used a heat gun to make a very gradual 90 degree bend in piece of plastic antenna tube and then inserted the antenna through the tube. Futaba recommends that the two antennas be oriented 90 degrees from each other.

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10-31-2011 07:37 AM  6 years agoPost 17
Phaedrus

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S. Orange County, California

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I too used a heat gun to bend my tubes to 45 degrees. The 2 antennas for a 90 degree angle. This arrangement has been rock solid.

On my nitros I have the receivers up front on top of the stack of stuff (battery, gyro amp, etc.) On those I have the on antenna going straight forward and the other straight up. Also rock solid.

I'm using R617FS in my Trex 550E, R6008HS in my Raptor 90SE, R6014FS in my Raptor 50SE.

AMA Leader Member
Go FASST, or Go Home!!
Team Futaba

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10-31-2011 03:03 PM  6 years agoPost 18
Four Stroker

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Atlanta

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Up front on a nitro is more of a problem. 1/8 landing gear straps are great for holding the tube. 1/16 ID spiral wrap is great on the micro-coax. Or 1/2A fuel tubing.

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10-31-2011 03:39 PM  6 years agoPost 19
BeltFedBrowning

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Kansas City

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I use RC car antenna tubing cut to size epoxied to the heli. Here are several examples.

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10-31-2011 05:53 PM  6 years agoPost 20
Four Stroker

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Atlanta

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You have a horizontal Phaedrus installation(middle). 1/8" landing gear straps would make it a lot neater.

Us old guys have heli antenna tubing laying around. It only came is white.

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HomeRC & PowerAircraftHelicopterRadio - Futaba FASST › Receiver antennas
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