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Other › My antenna on my JR 770 is too long???
11-24-2006 11:10 PM  11 years agoPost 1
Murf

rrApprentice

Normal IL

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What should I do with this antenna? Cut it? or put a whip antenna on it? Are the whip ones any good and will it affect the PCM of my RX??? Thanks for any help

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11-24-2006 11:15 PM  11 years agoPost 2
leslie

rrKey Veteran

Hollis, NH - USA

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Hi all,

No, don't cut it. The antenna length is matched to the frequency of your rx. It should be approx. 1 meter long.

If you don't want to deal with a three foot antenna, get a dean's baseloaded antenna. You then cut your original antenna at 4-10 inches and solder/crimp a connector on for the short baseloaded antenna.

I fly dean's on eight of my heli's, some ppm some pcm with no problems. Range checks are outstanding with the deans's.

cheers,
Leslie

Protecting those who protect us

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11-24-2006 11:51 PM  11 years agoPost 3
nivlek

rrProfessor

Norfolk England

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You could coil some of the aerial around piece of dowel rod or similar , but make sure that you do a good range check to make sure that your range hasn't been badly reduced .

At the end of the day , it gets dark .

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11-25-2006 12:00 AM  11 years agoPost 4
leslie

rrKey Veteran

Hollis, NH - USA

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Hi all,

nivlek has a good point, you can also coil the antenna around a straw or such, don't cross the wire, coil neatly.

any solution you choose, should include a good range check.

Cheers,
Leslie

Protecting those who protect us

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11-25-2006 02:59 AM  11 years agoPost 5
AWittleWabbit

rrElite Veteran

O.C., CA

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I use the deans antenna with that exact reciever. Works great! I have never experieced lockouts or glitches with this combo.

Heli-itis sufferer.

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11-25-2006 03:15 AM  11 years agoPost 6
fiatracer163

rrNovice

Milwaukee Wi

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I like to tie action figures to my long antennas and wip them around. It's a fun game I invented, and doing rolls with enough inertia to have it not hit the blades is a feat that I take pride in...

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11-25-2006 05:28 AM  11 years agoPost 7
Murf

rrApprentice

Normal IL

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Thanks to every one I think I will go with a deans

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11-25-2006 01:27 PM  11 years agoPost 8
Jon the Rooster

rrElite Veteran

Johns Island, Charleston, SC

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Daens not needed! Like said;
nivlek has a good point, you can also coil the antenna around a straw or such, don't cross the wire, coil neatly.

My Current Glitches are from my Tx!
Rx Did a Great range check with a (borrowed Tx)Futaba T6XHs @ 120'! To bad I couldn't figure out the programing in time to fly it today.
That things Primative!

and one more thing "DON'T BE AFRAID!"

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11-25-2006 09:22 PM  11 years agoPost 9
clive45

rrVeteran

NSW Australia

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??
Any coiling of the original antenna will seriously affect the tuning of it. Although you may get a good range check you will also make yourself susceptible to other noise/interference/frequencies. Coils in antennas is OK, but it has to be in the correct part of the antenna and correct inductance etc. Although people use coiled antennas of their own I would not suggest you do it. Use a deans or equivalent.

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11-26-2006 03:00 AM  11 years agoPost 10
Gary Jenkins

rrElite Veteran

Nowhere, US

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This antenna coil works well.

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11-26-2006 03:10 AM  11 years agoPost 11
OUCaptain

rrApprentice

Heli Addict Rehab Center

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I tightly coiled the end on my 790 right after it exits the tube and secured it with some fuel tubing. Many may say this isn't a good idea but not ploblems here. Range check is way farther than I can fly the heli nor have I had any glitches. The books usually says one thing and expierience tells something else. I'll stick with it untill expierience tells me different. Or I pry my wallet open and get a deans.

"Human beings are viruses with shoes"

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11-26-2006 01:23 PM  11 years agoPost 12
NQNA

rrElite Veteran

USA

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I use Revolution Base loaded antennas on all of my helicopters.. From Xcell60SE right down to the Trex XL.. I've never had one bit of problem with the Revolution antennas!!

JR 10 SX II Trans
PCM 770 Receiver

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