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Old May 06, 2012, 02:24 PM
Stop scaring my donkey!
JohnathanSwift's Avatar
Greenland
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So, then, please explain why Ohm's law is relevant for those of us who lack the understanding.
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Old May 06, 2012, 03:10 PM
3D Hack
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United States, IL, Glen Carbon
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OMG - I just realized that there is a design fault with the antenna.

It must be a design flaw because I can point the tip of the TX antenna right at my plane. Why didn't Spektrum design it differently to protect me from myself?

That means someone on this thread (not the person who asked about antenna orientation) is going to need a transmitter with an antenna that can't be pointed at the aircraft.

JC
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Old May 06, 2012, 03:13 PM
Air, Ground & Water
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Or a transmitter like the DX18 with two antennas.
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Old May 06, 2012, 03:24 PM
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Or a transmitter like the DX18 with two antennas.
Yes!

VP
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Old May 06, 2012, 03:26 PM
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Quote:
Originally Posted by JohnathanSwift View Post
How does Ohm's law play into this?

I mean, if electricity takes the path of least resistance, so what?
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Originally Posted by JohnathanSwift View Post
Hm, my point was that Ohm's law seems irrelevant to the entire issue!
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Originally Posted by JohnathanSwift View Post
So, then, please explain why Ohm's law is relevant for those of us who lack the understanding.
Here, do some research:

http://en.wikipedia.org/wiki/Ohm's_law

VP
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Old May 06, 2012, 03:46 PM
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United States, UT, Salt Lake City
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Well for the technically berift -
1 Turn on the TX
2 read the voltage displayed
3 if it is above 4.6 go fly for a few more hours
or
5 charge for 4-5 hours
If this is too technical
6 go to Walmart and buy a little 120 timer with a 120v outlet
7 plug power supply into timer
8 set timer
As for Homey's law- not req'd
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Old May 06, 2012, 04:21 PM
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Originally Posted by richard hanson View Post
Well for the technically berift -
1 Turn on the TX
2 read the voltage displayed
3 if it is above 4.6 go fly for a few more hours
or
5 charge for 4-5 hours
Go back and read my post: http://www.rcgroups.com/forums/showp...ostcount=15905



VP
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Old May 06, 2012, 04:53 PM
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Quote:
Originally Posted by Victory Pete View Post
You started charging at 4.8v according to your post.

His post indicated not to charge if it is above 4.6v.
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Old May 06, 2012, 05:08 PM
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Quote:
Originally Posted by richard hanson View Post
Well for the technically berift -
1 Turn on the TX
2 read the voltage displayed
3 if it is above 4.6 go fly for a few more hours
or
5 charge for 4-5 hours
If this is too technical
6 go to Walmart and buy a little 120 timer with a 120v outlet
7 plug power supply into timer
8 set timer
As for Homey's law- not req'd
Quote:
Originally Posted by JC Spohr View Post
You started charging at 4.8v according to your post.

His post indicated not to charge if it is above 4.6v.
Reread #3 and #5. See the "Or" in there? (I wonder what happened to #4?)

VP

PS: I didnt know Spektrum hired him to rewrite the DX8 manual
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Old May 06, 2012, 05:28 PM
3D Hack
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Quote:
Originally Posted by Victory Pete View Post
Reread #3 and #5. See the "Or" in there? (I wonder what happened to #4?)

VP

PS: I didnt know Spektrum hired him to rewrite the DX8 manual
"or" = 4
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Old May 06, 2012, 06:45 PM
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United States, FL, Orlando
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Quote:
Originally Posted by JC Spohr View Post
OMG - I just realized that there is a design fault with the antenna.

It must be a design flaw because I can point the tip of the TX antenna right at my plane. Why didn't Spektrum design it differently to protect me from myself?

That means someone on this thread (not the person who asked about antenna orientation) is going to need a transmitter with an antenna that can't be pointed at the aircraft.

JC
Knock it off. Your just as much as an instigator as anybody on this thread. Ask a question or answer one. Thats all...........
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Old May 06, 2012, 06:45 PM
Champagne Supernova
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You guys need to go a few rounds. Id pay to go see that.
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Old May 06, 2012, 06:47 PM
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Originally Posted by FlyHighSelllow View Post
You guys need to go a few rounds. Id pay to go see that.
Yes, in an "Electronics Lab"!

VP
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Old May 06, 2012, 08:54 PM
3D Hack
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United States, IL, Glen Carbon
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Originally Posted by FlyHighSelllow View Post
Knock it off. Your just as much as an instigator as anybody on this thread. Ask a question or answer one. Thats all...........
Interesting... now you are us.

And since you just comanded me what to do - would you mind if I told you what to do? That's a question not a command or insinuation.

Which came first? The trolls or the replies to the trolls?

When I joined in the conversations on this thread, I first tried politely - asking that the people that are repeatedly harping on the same topics over and over ad nausem to stop. But, they kept beating the dead horse. Then they drug the horse to the new DX8 and beat it some more.

If you go back several pages, I indicated I would chill if they would. I even went to the new DX8 thread but you'd never guess who followed and had to stir it up there as well.

If they have the right to repeat their opinions, surely I have the right to reply.

Thanks again for telling me what to do. I'd like to see you apply your eidct to everyone. Maybe you have and maybe you haven't. As you commanded, let's move on.

Once again, I will offer this...

I'm willing to keep this on topic. Are they?

JC
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Old May 07, 2012, 12:30 AM
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Deutschland, Hessen, LA
Joined Jan 2009
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Quote:
Originally Posted by tracknoob View Post
Thanks!

One of the persons advocating going straight up and down as some sort of a 'rule' at our field, cites the concept of someone standing fixed like a stone, while they track the plane using their eyes or head only, so that at the extreme end of a circuit, somehow that could conceivably leave the point of the antenna aligned with the plane, causing a hold or complete loss of contact with the aircraft.
The antenna oritation depends on the HF environment.
Beyond 30MHz give you horizontal polarization a greater range.
Gives you a lower range damping, lower signal bias and lower scattering.
Why? The most impurities are vertical.
On water gives you vertical the greater range.
A upwards or downwards pointing antenna is a bad choice for slope flying.
When you fly high then point the weak antenna tip in the direction to your modell. Fly you below the slope side and must landing downhill is upwards pointing antenna suboptimal the other weak point of your antenna point downwards to your modell. A antenna straight ahead is also suboptimal, you point with the weak point towards your modell.

The data log show you what is better on your field.
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Last edited by Kambalunga; May 08, 2012 at 02:54 AM.
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