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HomeAircraftHelicopterMain Discussion › QUK Whip Antenna
02-07-2006 12:39 PM  12 years agoPost 1
Red9301

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London UK

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I was just about to wrap my antenna cable lead - the 30CM you are supposed to maintain between the Rx and the QUK whip. Then I started thinking that doubling it up like this is possibly not a good idea:

Is this acceptable? Range check appears to be ok, but after spending weeks tracing glitches on the Trex, I didnt want to have to do the same with me rappy.

Any suggestions as to a better routing?

Cheers for any help

Redz

Making crashing an art form...

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02-07-2006 01:43 PM  12 years agoPost 2
tchavei

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Portugal

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Wraping it like that isn't a good option. I would make sure it has the 30cm and then try to route it to the base loaded without any latches/loops... try to route it through the longest way so that it doesn't just hang there.

Make sure you range test it. I have that antenna on my Freya but still I'm scared flying with it since I read so many bad things about base loaded. My range tests give me around 70 paces on the ground with the Tx antenna fully collapsed.

Tony


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"Perfection and patience usually walk side by side..."

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02-07-2006 02:25 PM  12 years agoPost 3
gkoutsis

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Athens Greece

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I am also using the QUK whip on my 30 and I am more than happy with it.

Not a single glitch and the setup looks nice and neat.

George

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02-07-2006 04:05 PM  12 years agoPost 4
Red9301

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London UK

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Thanks to both of you.

I had a good look at your gallery gkoutsis and saw your installation. On the back of that I routed the antanna through a fuel tube, around the bottom of the battery tray, up under the throttle servo horn and back through the frame. The result is much neater, and no doubling up. I made sure I wasnt crossing any servo wires and that the tubing does not interferre with the throttle horn using some cunning zip-tie-ness.

Much better

Cheers!

Red

Making crashing an art form...

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02-07-2006 05:20 PM  12 years agoPost 5
Quick50Nikl

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Sweden,Sthlm,järfä lla,

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I did it another way, what do u think guys is this ok?

Assumption is the mother of all . . . . ups

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02-07-2006 06:06 PM  12 years agoPost 6
tchavei

rrProfessor

Portugal

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Red9301: Yep, much neater. DONT FORGET TO RANGE CHECK though

Quick50Nikl: Seems good but 2 remarks:

1. I'm not sure if being paralell to the boom at that distance is healthy

2. Being in the back the 30Cm wire was enough?

I hope someone more educated will drop in here and comment


my two cents

Tony


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02-08-2006 11:06 AM  12 years agoPost 7
RotorHead486

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England

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Hey Guys,

Red, much better looks really good!! very neat.

Quick50Nikl: Hmmmm!, interesting positioning never tried that way round, the only thing that comes to mind is the concern Tony has with it being close to the boom, with the booms having the drive for the tail in there, be it a belt or shaft these can be a certain amount of static built up from the spinning action of the shaft or even more from the belt.

Cheers!
RH486

One Reason For Crashing'Rogue Servo Bent on World Domination'!!
FLP Flight Team

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02-08-2006 02:14 PM  12 years agoPost 8
jbiter

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Sebring, FL

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I mounted my whip on my Avant the same way Nikki did. Works great.

Jeff

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02-08-2006 02:48 PM  12 years agoPost 9
tchavei

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Portugal

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no problems with the carbon? I like it too but am a little afraid of mounting it that way as the back part of my freya is full carbon and I don't konw if 30cm are enough to get to the back of the heli

Tony


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02-08-2006 03:02 PM  12 years agoPost 10
jbiter

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Sebring, FL

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No Problems. In fact, it seems to work better there than underneath the frame.

BTW, I supported my whip end using one of those JR servo wire wraps and some fuel tubing. I might be able to upload a pic to the gallery if interested.

Jeff

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02-08-2006 03:15 PM  12 years agoPost 11
tchavei

rrProfessor

Portugal

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Please do.

Never like my quk antenna where it is mounted. Effective but ulgy.

Thx
Tony


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02-08-2006 03:22 PM  12 years agoPost 12
tchavei

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Portugal

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Btw... On my bird the distance from the front tray to the back is at least 40cm... how in earth do you manage to fit it in the back?

Tony


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02-08-2006 04:32 PM  12 years agoPost 13
Quick50Nikl

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Sweden,Sthlm,järfä lla,

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Ithough it was ATLEAST 30cm it doesnt need to be exactly 30cm does it???

Assumption is the mother of all . . . . ups

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02-08-2006 05:02 PM  12 years agoPost 14
tchavei

rrProfessor

Portugal

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It has to be 30cm or the wavelength won't match the antenna length... I would have swear I read exactly 30cm on the QUK antenna manual...


here is a pic of my wiring:


Tony


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"Perfection and patience usually walk side by side..."

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02-08-2006 05:11 PM  12 years agoPost 15
jbiter

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Sebring, FL

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Check my gallery for a pic of my Avant installation

The wire is 30cm but as you can see, I didn't have to go all the way to the back.

I know this is off post but how do you insert pics inside the post like that?

Jeff

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02-08-2006 05:17 PM  12 years agoPost 16
tchavei

rrProfessor

Portugal

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Very nice. It would concern me routing the antenna wire next to the carbon frame though.

I suppose your antenna is also over 30cm...

Tony


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"Perfection and patience usually walk side by side..."

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02-08-2006 05:21 PM  12 years agoPost 17
jbiter

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Sebring, FL

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Hi,

Yes, but on an all carbon machine it is difficult to say the least to avoid that. Anyways, I get great range checks and the system works flawlessly in the air.

Jeff

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02-08-2006 05:29 PM  12 years agoPost 18
Quick50Nikl

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Sweden,Sthlm,järfä lla,

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But does the antenna have to be exactly 30cm??
or is it atleast 30cm?

Assumption is the mother of all . . . . ups

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02-08-2006 05:30 PM  12 years agoPost 19
tchavei

rrProfessor

Portugal

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Hmm... I think I going to try that... would look much neater in the back. I read somewhere min distance is 30cm and max is 40cm maybe I could manage 35 or so but I also noticed there are two types of QUK antennas... one is cylindrical (ours) and one is square... I wonder if there are differences.


I also though I could fix it to the landing gear but its carbon too so I guess that would reduce the range.

Another question we are forgetting is if we are talking about 35Mhz or 72Mhz... the instruction differ I guess. Mine is for 35Mhz

Tony


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"Perfection and patience usually walk side by side..."

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02-08-2006 05:47 PM  12 years agoPost 20
Quick50Nikl

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Sweden,Sthlm,järfä lla,

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didnt know Carbon had any effect on the antenna . But my frame is made of something called G10 is suposed to be similar to carbon.

Anyone know of this material?

Assumption is the mother of all . . . . ups

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