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07-29-2012 09:04 PM  8 years ago
Einzelganger

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Campbell, Texas

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O.K. I've got real problems.
Side on, low power is good to 45'.
Tail in, low power is good to 45'.
FULL Power side on to 54'.
FULL Power tail in to 50'
If I walk it slow, side on is good to about 100' but once lost won't return till about 45 at full power.
Bad Tx or Rx.
I love the smell of nitro in the morning.
RIP Roman
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07-29-2012 09:40 PM  8 years ago
Cowjock

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If you got another receiver swap it out and see if that one does the the same thing.Damn that ground is hard! When's the right time to get out of this money sucking hobby?
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07-29-2012 11:22 PM  8 years ago
Einzelganger

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Campbell, Texas

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Wish I had another. The one I have is obviously not working right.
I reset the antenna as shown here in pics and it is good to about 50 feet then it's spotty after that in any direction. At full power.

First tank that I put through with the 2.4 was just all angles hover at about 35 feet distance.
First tank after the nose in was the same to check everything out. Good thing I didn't do any FF. Would have lost control trying to leave the circle.
Got a dud for a Rx/Tx. No spares for either.
Back to PCM for a while.

Thanks to everyone for your help.
Wayne
I love the smell of nitro in the morning.
RIP Roman
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07-30-2012 12:32 AM  8 years ago
TMoore

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Cookeville, TN

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I would try to clean that installtion up and see if I couldn't identify the problem. Take the RX out of the model and do a range test with both antenna in the open.

The 701 gyro box will fit in front of the collective lever easily.

Part 107.
The only ZERO flight hour certificate in the world.
It's like getting a driver's license without the driver's test.
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07-30-2012 01:53 AM  8 years ago
ThumbBumper

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A little to the right and down!

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Just the way the problem was described does not sound like a radio problem to me. At the distance the model was from the transmitter, you should have had plenty of signal... Futaba stuff is pretty bullet proof and you have to screw up pretty bad to loose your signal.

I'm thinking a loose wire just not plugged in all the way, or even a frayed servo wire rubbing on the frame somewhere. I know you said you checked them, but check to see if any of the pins in the connectors are pushed back and not seating all the way. It's possible that a power glitch could have caused the FBL controller to glitch and reset.

After you check all of your servo/receiver wires plugged in all the way, put a small bit of shoe-goo or other adhesive to hold them in place.

Bob
If it ain't broke, go fly some more!
http://facebook.com/groups/TORCHS/
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07-30-2012 02:17 AM  8 years ago
Einzelganger

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Campbell, Texas

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TMoore and ThumbBumper

I will check everything very carefully as I disassemble.
I would love to find something simple that I can fix.
Yes, I will remove the rx and check again out of bird.
Hopefully, I've got a loose conn somewhere and can put it all back together with better cable and unit management.
TMoore, your installation is pristine. Mine looks like a kid's room.
I'll let you know.
Took the 8fg Super off my wish list until this is settled.
The 8J doesn't look so bad with Sbus and 3 axis support.
I love the smell of nitro in the morning.
RIP Roman
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07-30-2012 02:25 AM  8 years ago
Cowjock

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I don't like the 45' at full power, like Thunderbumper said Futaba stuff is pretty much bullet proof, but they are punched out like toys and bad stuff does get through. I have flown a 600n with one of the antennas missing off of a fasst receiver with NO ILL affects. I truly think it's either a receiver or Tx problem. If this is a new set and you bought it a hobby shop take the whole set back and exchange it. Maybe they can help you.Damn that ground is hard! When's the right time to get out of this money sucking hobby?
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07-30-2012 02:43 AM  8 years ago
Solmanbandit

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Tucson , AZ

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This is part of an article I found recently about 2.4ghz. If you want the article with the pictures, send me an email and I can send you the document.

The radiation pattern is shaped like a big fat airplane tire with the antenna being the axle. The signal off the end of the antenna is inherently weak.
But above 30MHz is the horizontal polarization (bend antenna 90° to the side)

But there is still very good signal strength even when the tip is pointed only a little to the side (where the red goes to yellow). That would be with the antenna pointed away from the plane 20-30 degrees or so in any direction, (up, down, right, or left).

The real weak signal "danger zone" is only when the tip of the antenna and length of the antenna are pointed directly at the plane. Like when the antenna is aimed at the antenna in both the horizontal and vertical axis.

Most us hold the TX so the antenna is angled up and usually to one side or the other also. Even if the length and tip of the antenna are in your line of sight, the 45 degree of so of upward angle on the antenna keeps the plane in a good signal zone.

So the "weak signal" dangers are sometimes a little over stated. As long as there is 20-30 degrees or so of offset in either axis you're in the good signal zone.

If you're at 3,500 feet and think you're experiencing some glitches or signal loss at the receiver the best thing to do is the get the antenna vertical or vertical and leaning back a little to get the line of sight to the plane perpendicular to the antenna's length. And hope for the best.
Trex 700E / Trex 500 ESP - Ikon/ HD 500 - Ikon 2/ Goblin 500 Ikon 2
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08-05-2012 08:34 PM  8 years ago
Einzelganger

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Campbell, Texas

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I tested the radio out of the bird and found about 20 to 40 feet max range in all directions @ low test power. Approx 30 to 75 feet max range at normal transmit power. It is not consistent and is deteriorating. Before it quits, it hesitates and responds raggedly like a rusty robot.

When it nosed in and broke the blades, I was hovering in a breeze. Apparently, the last forward input froze and pushed it over. It is set up for rather crisp response.

After much thought, it wasn't interference.(never really thought it was)
Wasn't battery @ tx or rx.
Wasn't the switch.
No frayed wires.

It had almost nothing to do with the antenna position.
When I found max range in any direction and then aimed the antenna like a pistol barrel at the rx, signal was lost. A very small loss of signal. Insignificant under normal conditions. There's my answer in a worst case scenario.

Time for an RMA number.

Thank you very much to all respondents. You guys are awesome.

I love the smell of nitro in the morning.
RIP Roman
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