RC Groups

RC Groups
    R/C Blogs
        Mini-HowTo Project Covert Ops: Long range ground station in disguise

#1 IBCrazy Sep 19, 2012 05:41 PM

Project Covert Ops: Long range ground station in disguise
 
10 Attachment(s)
Ever get sick of setting up your ground station every time? Me too. More and more I want my ground station to be more simple. However, I want the nice clean video of a directional antenna which used to mean I had to break out the tripod. Not anymore.

This is my idea of a fun to use long range ground station. And the best part, it's covert. Perfect for those places you aren't supposed to fly but want to anyway. Get in, launch, fly land, vanish before anyone notices.

For you guys who want a high performance ground station try mounting your VRX to the back of your antenna, then sticking into a messenger bag. Launch and stand sideways to your flying field. The great part is that your body blocks interference from your radio to your video. The messenger bag is RF transparent, so you won't have any signal loss. The other great thing is you can use any goggles you want. Since you are wearing your station, you can use a better set of goggles like the EVG920's or Cinemizers and still be wireless.. well... sort of.

Mine us dual band: 1.3, and 2.3GHz. I have 1258, 1280, 2305, 2396MHz. Here's the parts list:

Cheap messenger bag
Ready Made RC 1.3GHz video RX
1.3GHz Crosshair antenna
2.3GHz Ready Made RC 2.3GHz VRX
2.3GHz custom Crosshair
Cheap Ebay voltmeter (to monitor battery)
FPV-Japan digital video recorder
EVG920 Goggles

The other great thing is you can pack your tools and extra batteries in the bag so you don't need to carry all the extra toolboxes anymore.

How it works

It's pretty simple: turn the system on, launch and turn sideways after launching. You want to aim the Crosshair antenna in the general direction you are going to be flying, so a quick turn to the side takes care of it. The great thing is you expose the strong side of your transmitter antenna to the airplane and your body blocks the interference to your video.

Feel free to build one for yourself.

-Alex

#2 SDSURFnGLIDE Sep 19, 2012 07:00 PM

That's pretty cool and practical! Good job

#3 carguy1994ca Sep 21, 2012 01:01 PM

I like portable ! Build one in a back pack, not as compact as yours though. Great idea on how to place the ant. vs flying the plane. Good job :)

#4 Blusky1 Sep 25, 2012 12:22 PM

1 Attachment(s)
great work alex

I agree 100% with you after 82 fpv flights

My ultimo lazy man ground station
Good for up to 1.2km

when I convert over to 1.3ghz your idea will be very handy

#5 IBCrazy Sep 27, 2012 03:57 PM

I still have a head-mounted omni station. This just gives me more punch. Nothing beats the simplicity of a simple head-mount, though.

I almost did a backpack, but I couldn't figure out how to not block my own RC airplane signal. Oddly, the messenger bag was my girlfriend's idea.

-Alex

#6 carguy1994ca Sep 27, 2012 04:52 PM

My back pack GS is meant to be placed on the ground. Unzip the back shows the patch antenna (900 mhz). I got the idea here on RCG on the GS tread. The idea was to have it portable so I can alk with it and go to remote areas with the multirotor.

#7 SDSURFnGLIDE Sep 27, 2012 04:58 PM

I have a camel pack that i started converting into a super portable Gs last night...has just enough room for everything!..although its not really super covert oops as i have an roof that mounted my vrx on...

#8 pajonate Oct 02, 2012 09:58 AM

Hi, Alex,
what is a difference between this antenna and the patch you have a mini build-in here on rcgroups.
I was looking for a build log for that one, but I could not find one. Do you or will you have one posted here on rcgroups.

#9 pajonate Oct 03, 2012 03:49 PM

I am a newbie in the FPV world. so I ask a lot of questions.
You have Vrxs on two freqs: 1.3 & 2.4Ghz.
As you mentioned, you have two Vrx.

How many cameras you have on your plane?
Is it one, and if so how did you do the wiring to the both VTxs? Is splitting the signal for each Vtx. already a loss of signal?

Thanks for sharing your knowledge.

#10 sharonx Oct 05, 2012 12:36 PM

Nice one Alex.
Why dual band ? how that works ? two vtx onbaord ?

#11 Neville2012 Oct 05, 2012 08:05 PM

Alex,

I'm going to build one of these.

I'm curious to know how well you think it is likely to work if it's hanging upright (i.e. oriented as it would be on your shoulder), inside a 'Yakima' roof box top of a car?

My Yakima would have plenty of room, and is all-plastic construction apart from a metal rail low down on each inside (part of the locking mechanism).

I think there are lots of places where one would be way less likely to attract attention and become subject to distraction and/or harassment (friendly or otherwise) if able to fly while sitting inside a car, with no equipment at all visible outside it.

#12 CarbonFlite Oct 12, 2012 02:58 PM

I'm guessing the two frequencies are so he can decide which one has the best video signal. He'll be moving around a lot. Correct me if I'm wrong.
Alex suggested the same thing for my project. Without a spectrum analyzer you can't tell what video signal will work the best without testing it.

#13 himagain Oct 23, 2012 11:01 AM

Alex

Like your thinking. Keep it simple

One question, What Tx antenna is best for working with the the X-hair RX ant

Cheers

David

#14 IBCrazy Oct 24, 2012 01:33 PM

Quote:

Originally Posted by sharonx (Post 22921312)
Nice one Alex.
Why dual band ? how that works ? two vtx onbaord ?

Dual band is so I can fly with other pilots. I can switch bands on the fly. I fly both 2305MHz and 1280MHz. All my transmitters use servo connectors and velcro so they swap incredibly fast. I now have notch filters to clean things up even more.

-Alex

#15 IBCrazy Oct 24, 2012 01:35 PM

Quote:

Originally Posted by Neville2012 (Post 22924635)
Alex,

I'm going to build one of these.

I'm curious to know how well you think it is likely to work if it's hanging upright (i.e. oriented as it would be on your shoulder), inside a 'Yakima' roof box top of a car?

My Yakima would have plenty of room, and is all-plastic construction apart from a metal rail low down on each inside (part of the locking mechanism).

I think there are lots of places where one would be way less likely to attract attention and become subject to distraction and/or harassment (friendly or otherwise) if able to fly while sitting inside a car, with no equipment at all visible outside it.

It all depends on how far you intend to fly. The roof rack thing is a good idea so long as it sets at the edge of the car. Reflections form the car can be difficult to deal with.

-Alex


All times are GMT -5. The time now is 05:45 AM.