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01-11-2006 04:21 AM  13 years ago
Topic Vote0Post 1
victor55ca

rrApprentice

Vancouver BC

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Antenas
Hi Everyone

This may be a silly question but I was just wondering if most of you are running base mount antenas or using the stock wire that is on your reciever? Can I use the stock wire or would it be better to convert to base mount?

Thanks
Vince
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01-11-2006 04:36 AM  13 years ago
AGRAV8

rrProfessor

Mosquito Coast......Houston Texas

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base load
revolution is my preference.
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01-11-2006 04:42 AM  13 years ago
Chris Bergen

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cassopolis, MI USA

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Ditto Chris D. Bergen
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01-11-2006 04:54 AM  13 years ago
victor55ca

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Vancouver BC

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You are talking about the Base Loaded Whip Antenna RVO1010

Vince
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01-11-2006 01:24 PM  13 years ago
Gary Travis

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Utah

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i Have 3 gssers with Deans antennas and one with a revolution base loaded antenna, haven't had a problem with any of them.
Gary
Bergen R/C Helicopters Duralite Batteries DJI Innovations Magnum Fuels Wren Turbinesl
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01-12-2006 01:03 AM  13 years ago
victor55ca

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Vancouver BC

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Another question where do you generally mount the antenna? Under the hood pointing forward? Are there any pictures of this antenna on a pred out there?

Thanks
Vince
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01-12-2006 02:11 AM  13 years ago
BIGRCR

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Easley, South Carolina

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I use both the full length and a Revolution base load. The results are good with both of these. The full length is best IF you can do it. The signal using a base load mounted under the canopy is more easily blanked off by frames, electronics,etc. especially at certain attitudes of the model (nose out at a slight angle have caused issues in the past).This was because the signal had to pass through the mass of the motor, frames and other parts. The signal eminates in straight lines from the transmitter antenna and if the wave cannot "see" the reciever antenna at times it could cause an intermittant loss.

The base load is also not as quite as effiecient as the full length as there is a small amount of loss compared to full length.

I take the time to route the antenna wire away from the ignition system, gyro and other electronics of the model.

Later,
BIGRCR- John Garst
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01-12-2006 06:34 AM  13 years ago
Disciple4123

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USA

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Victor: Below is a picture of the mounting of a base loaded on a Predator, if you choose to go that route. I attached it to the right side fuel tank plate. It sticks out one of the canopy holes very neatly.

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01-12-2006 04:40 PM  13 years ago
dariof

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Henderson, NV / Laguna Niguel, CA

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Seems like everyone is using the base loaded. It is definitely a cleaner method and hides the wire coming from the canopy.

I have used both methods (base loaded and full length). I have never had problems with either, but tend to use the full length method exclusively now.

I see the base loaded as one more opportunity for something to go wrong....the connection severs, lost signal due to heli position, slightly less signal strength, etc. With a full length, I believe these possible issues are eliminated, and I would rather not cut a perfectly good antenna wire anyway.

Below is the base loaded on my Bergen and the full length mount for my Fury and R30. I use the latter methods for all my helis now.

Best Regards, Dario
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01-16-2006 08:22 PM  13 years ago
victor55ca

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Vancouver BC

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Looks like Century is sold out of the Pred Gassers right now. Looks like I will be waiting for my Pred SE 231. :-(
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01-17-2006 11:47 AM  13 years ago
flipped2left

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indianapolis,in.

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I haven't had the chance to try a dean's or other brands of base loaded heli antenna's but i use a 2 meter ham radio antenna with a lock in bnc connector and no glitches on my gasser. kenSmile! people will wonder what you're up to!!
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01-17-2006 12:40 PM  13 years ago
wolfdad

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Southern Maryland

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I've been using the Revolution for the past three plus years with absoutely no problems on turbines, gassers and nitro's. A short time ago, there was a post that mentioned that both the Deans and Revolution were made by the same folks. Can't vouch for the accuracy of that, however both work on the same principle. Only thing I would add is that I would strongly recommend soldering the connection between the antenna and receiver wires. One of the best crashes I have ever seen was the result of the "push together" connector coming from undone.

wolfdad sends...
"There are those who have...and, those who will" IRCHA #2117, AMA #70068, Turbine Waiver #105
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01-19-2006 08:11 PM  13 years ago
mcoccia

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Central Jersey

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Little help here regarding whips and my Gasser
I have the Carbon Predator Gasser with Deans. I have mounted this on the gas tank away from everything and with the antenna down and the canopy on can't walk more then 5 feet away..this is not good. I have been fighting this for awhile now and I do certianly have PCM lockouts. I have tried the Rev also with the same results. I have tried another RX with the full length antenna, wire running down the skids on the exhaust side and can easily walk 60 feet with no degration.

What are your thoughts and suggestions? what can I really do here other then leave the full length on and pray

Radio 9303 and 10CH SYTH RX tuner.
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01-19-2006 09:01 PM  13 years ago
xcellgasman101

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WOODWARD, OKLA....

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Something has to be wrong,, what is the length of the stock ant? to the deans lead? I have been running the same Deans for 6 years now with out any trouble, both FM and PCM recievers.. Might be a bad ant.
XGM
John Crotts
www.soonerhelicamproductions.com
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01-19-2006 09:05 PM  13 years ago
mcoccia

rrKey Veteran

Central Jersey

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John,

Antenna length is 4 inches then hits the Deans. I also tried this Rev.

I do have another brand new Deans one Piece I could try. I will try this and see what my results are and get back ASAP
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01-19-2006 09:27 PM  13 years ago
mcoccia

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Central Jersey

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I tried
Installed and walked back maybe 30ft looked ok but it was hard to see. I will wait till my buddy comes over to give me a hand.

Directions state for the Deans cut 4-10 inches off the RX should I have left more on there?
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01-20-2006 01:50 AM  13 years ago
xcellgasman101

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WOODWARD, OKLA....

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I leave atleast 8 to 10" on all of mine,, that could be your problum, too short XGMJohn Crotts
www.soonerhelicamproductions.com
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01-23-2006 10:18 AM  13 years ago
flipped2left

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indianapolis,in.

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our frequencies which are in the 72 mhz range falls into the VHF spectrum, These can be subjected to reflectivity (ghost signals etc.)
all frequencies are proportional (the higher the frequency, the shorter the antenna) there is also polarisation, if the antenna is mounted horizontally, then your transmitting antenna must be horizontal as well (this applies to all antennas and frequencies!) Most antennas for helis do not have a ground plane (which is a must in order for any antenna to work properly) the ground is the negative side of the power supply (battery) (for all of you c.b. radio people you should know this!) since most rx's are relatively isolated from the heli you either need to run a ground plane(piece of wire same lengrh as antenna or at least half length or tap off of batt. neg. to frame of heli,) if you doubt this then don't try it! ken
Smile! people will wonder what you're up to!!
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01-24-2006 08:14 PM  13 years ago
avator

rrVeteran

New Jersey

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I not certain, but, I think all of the ground wires running to the servo's act as the ground plain for an RC system. At any rate, these radio units are designed to work as they are and do not require adding wires to augment the systems performance. Most RCer's rarely fly more than several hundred feet away from the transmitter, well within the range of modern systems.
Mcoccia, What you are describing is a problem somewhere in your system, antenna, receiver, etc. It is not because you don't have a ground plane on your antenna.
Anyway, I hope you find it. Let us know what it was when you do.
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01-24-2006 08:46 PM  13 years ago
mcoccia

rrKey Veteran

Central Jersey

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Hi,

Well I went with the full length antenna on Saturday and had no issue's with PCM lockout until my rudder ball link snapped in flight (That's another story).

I agree I must have had some issue with the Deans antenna possibly only the RX wire was only 4 inches and not enough I really don't know though. By the way it was the same RX that I used and soldered a new lead on. I don't think it's the RX.
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