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Home✈️Aircraft🚁HelicopterHelicopter Main Discussion › Can someone do me a favor? Range check in the house?
07-21-2006 03:51 PM  14 years ago
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Red-Rx7

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Olathe, KS - USA

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Can someone do me a favor? Range check in the house?
Hey all..

I need a favor, and was hoping someone could help me out here. I need a range check of their bird. This isn't just a regular range check, but rather I need it conducted through walls and outside a house.

Specifically, I would like to find out if all transmitted signals are received within a house; while transmitting them from across the street. For testing purposes, this will require two people. If possible, can someone (or many??) people try the following steps:

1) Position the person with the transmitter across the street from their house (like on the neighbors curb)
2) Place their Helicopter in various places in their home, with an observer. ****
3) Provide various inputs to the transmitter, and verify that the receiver performs this activity

Note: On step #2, I am looking for various places within the house. The idea is to see if the signal can go through exterior walls, and interior walls with various other obstacles in the way. Also, if you have a basement, I would love to see that as well.

I would really appreciate the assistance.
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07-21-2006 04:10 PM  14 years ago
PaulJC

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Hertfordshire UK

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idea is to see if the signal can go through exterior walls, and interior walls with various other obstacles in the way.
Yes, Yes & Yes. However don't be suprised if the electrical goods in your house cause major glitching
Re-entering the atmosphere...
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07-21-2006 04:29 PM  14 years ago
Red-Rx7

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Olathe, KS - USA

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Paul,

Thanks for the reponse!

Does the range make a difference to the operation at all? Our minimum requirements are "across" the street. Of course, we would love to have it still be operated from around the corner.

Also, can anyone try turning on a Microwave and check the glitching? How about a Television? FM or AM radio?

This would be really appreciated.

Thanks again.
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07-21-2006 04:59 PM  14 years ago
Leif

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USA

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What do you hope to achieve with this "testing"?

The reason I ask is that RF transmission will be VERY dependent on what type of construction materials the house is built with.

My house has foil-sided Cellotex foam on the exterior. As such, it's like having a massive RF shield around the whole house. While some RF gets in (mainly through the roof area), my wireless LAN won't penetrate the exterior walls at all.

We have a similar issue at my work place, where the windows have a micro-foil metallic coating that blocks RF. Can't even get cell phone calls in the building.

Leif
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07-21-2006 06:37 PM  14 years ago
Red-Rx7

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Olathe, KS - USA

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Leif,

Thank you for the response. This is the type of information I am trying to flush out in our testing. Without going into much detail, "we" (state agency) need to be able to control an RC vehicle within the confines of a typical residential dwelling.

We would like to extend the confines to something in the ballpark of other structures, but we understand the construction materials and signal interferences that may be caused. Our basic goal is to work within the limits of 1-50+ year old homes in both a downtown and a suburbia type environment.

Meeting this basic requirement in most situations, with the knowledge of what the limitations are; would achieve the purpose from this testing. I would really like people to "try" the activity if possible, rather than just speaking from theoretical knowledge.

Obviously we will administer our own testing, but this is the first point proving grounds to determine the practical use case. In addition, whoever does attempt this; please provide the type of transmitter user and the information about the receiver on the end.

Again, I appreciate the help.

Thanks,
Mike
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07-21-2006 08:08 PM  14 years ago
shaltac

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Rochester, NY

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Depending on what you are trying to do, you might want to look into some of the lower frequency govt. / comercial band stuff. Penetration is better (for the most part) the lower the frequency. You can also pump more power at the problem with a licensed ham\industrial Xmitter.I'm wrong no matter what I do, so I might as well have fun doing it!
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07-21-2006 08:12 PM  14 years ago
C30

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Cookeville Tn USA

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check out "spektrum" technology

http://www.horizonhobby.com/Explore...?ArticleID=1535
Chuck
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07-21-2006 08:35 PM  14 years ago
Red-Rx7

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Olathe, KS - USA

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shaltac,

We are using a 900MHz frequency to transmit the video / audio feed, powered behind a 500mW transmitter. We are also using a diversity 900MHz receiver with a Yagi antenna.

C30,

That looks like a great idea, but I am not sure on the ability of the 2.4Ghz system to transmit through structures. Does anyone have one, that they could try?
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07-22-2006 01:15 AM  14 years ago
C30

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Cookeville Tn USA

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Check your cordless phone...they are 2.4 g they work fine through walls for a great distance....mine works at my neighbors house 1/4 mile away.Chuck
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07-22-2006 01:18 AM  14 years ago
C30

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Cookeville Tn USA

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I have three spektrum systems 2 for park fliers and 1 for 1/8 buggy and they work great , never a glitch/ever , and no channel concerns. I would try your test for you but theres no one around ....Chuck
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07-22-2006 01:43 AM  14 years ago
Red-Rx7

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Olathe, KS - USA

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Chuck,

I am very interested in the results. If you can find someone to assist you, please do!

If you could, try standing across the street from your house.

Have your buddy partner start at your front door (holding the park flyer/heli whatever) and walk through your house. Go into the very back rooms, basement, upstairs, etc. Try tuning on a microwave, tv, etc. All while the buddy person is moving, have you constantly be moving one stick (something consistant, so you can see if there are any glitches).

For your trouble, I would paypal you 10.00. I know it isn't much, but the departmental budget is laughable.

Thanks!
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07-22-2006 01:53 AM  14 years ago
C30

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Cookeville Tn USA

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someone will be here over the weekend and I'll try to check it for you....no worry about the $ I'll do it for free if I can find some help...Chuck
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07-23-2006 06:41 PM  14 years ago
Red-Rx7

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Olathe, KS - USA

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Chuck,

Thanks again. Let me know how it goes.

Anyone else have a DX6 Radio/Reciever?
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