RE: 2.4ghz 2000mw transmitter and receiver -CHEAP  
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RE: 2.4ghz 2000mw transmitter and receiver -CHEAP - 9/28/2005 6:40:17 PM   
critterhunter



Posts: 2507
Joined: 9/24/2004
From: Brook Park, OH, USA
Status: offline 		What's wrong with the stock antenna and are you planning to just remove the cover or replace the whole thing? If you are going to replace the TX and/or RX antenna where are you guys buying those from? Can I get by with the stock antenna? Also, will this unit give decent range without a patch on the RX?



< Message edited by critterhunter -- 9/28/2005 6:43:06 PM >

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RE: 2.4ghz 2000mw transmitter and receiver -CHEAP - 9/29/2005 10:41:44 AM   
randall1959



Posts: 863
Joined: 8/29/2004
From: Bolckow, MO, USA
Status: offline 		Those antennas actually work VERY well. That little circuit at the bottom of the antenna is a base load. Mine does really well with the stock antennas. I sent photos to Bill Strong a while back asking if I could use better antennas and he told me that the ones that came with it were high gain. They look funky but they work a long long ways out.

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RE: 2.4ghz 2000mw transmitter and receiver -CHEAP - 9/29/2005 1:05:17 PM   
bruce_lee


 

Posts: 109
Joined: 1/24/2005
From: rotherham, UNITED KINGDOM
Status: offline 		oh ok, i just thought they looked a bit tacky if you know what i mean, but the range is very far but it brakes up alot on the ground.. but in the air it will be just fine, the case i took it off to see how much it would weigh, because it is heavy with the case on...

< Message edited by bruce_lee -- 9/29/2005 1:10:28 PM >

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       Post #: 28

RE: 2.4ghz 2000mw transmitter and receiver -CHEAP - 9/29/2005 3:31:06 PM   
critterhunter



Posts: 2507
Joined: 9/24/2004
From: Brook Park, OH, USA
Status: offline 		Welp, just took the plunge and bought the 2.4ghz 2000mw tx/rx! So, let me get this straight...this unit will give great range with the stock antennas and no patch antenna? Any tips on taking the case off and what can be scrapped off the TX would be great. Randall said there is a 5V regulator under the board? Curious as to what voltage input this regulator can handle as I'll be running it off an 11.1 volt lipo. What size battery are you feeding it? The Cmos camera I'll be using on it for now takes a voltage input of around 9 volts. I guess I'll have to use my 9 volt regulator to power that camera seperate unless there is a 9 volt source on the TX card? Servo leads for plugs is a good idea...I have a few scrap servos from the stock Stryker servos I can rip the wires off of. Any other tips would be welcome. Also, where can I get a good yet cheap CCD camera to replace the CMOS unit I have now with? This one does give a pretty good picture though so I'm in no hurry. Also not done with the 800mw 1.2ghz transmitter as I want to try the vertical orientation on the antenna that somebody suggested. This thing is supposed to give good range. Randall or others can you give an overview of how well the video on the 2.4ghz unit is at distance and/or plane position in the sky? Also curious which way you have the RX and TX antennas mounted. Am I to understand this unit does a constant "lock" onto the signal so there is no need to keep tuning?

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RE: 2.4ghz 2000mw transmitter and receiver -CHEAP - 9/29/2005 6:00:55 PM   
bruce_lee


 

Posts: 109
Joined: 1/24/2005
From: rotherham, UNITED KINGDOM
Status: offline 		yes there is great range with stock antenna's, but if you want improved range then get a patch.. it is easy to take the case off, just undo 4 screwws and it slides the top off then another 4 screws that hold the circuit to the base of the case. it's easy. the voltage input is 9-12v. your battery will be perfect.... i dont have mine mounted yet ... and yes the unit does "lock" onto the signal so there is no need to keep tuning. it also has 4 channels for incase you are geting interference on another.
thats all i know..

check out photos to see it with case off:
http://www.psp-messenger.co.uk/photos/

< Message edited by bruce_lee -- 9/29/2005 6:02:05 PM >

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RE: 2.4ghz 2000mw transmitter and receiver -CHEAP - 9/29/2005 7:16:05 PM   
critterhunter



Posts: 2507
Joined: 9/24/2004
From: Brook Park, OH, USA
Status: offline 		Hey, I've seen mention on other threads in this forum of a website where guys hack into cameras to make them do things they didn't originaly feature. I have an Aiptek 5100M digital camcorder that people are using as onboard recording devices (fairly small and light unit). This camera features a USB and a video out port but no video in. I would think it would make a great recording/viewing device on the ground to hitch the plane camera's RX to. This way I don 't have to lug a TV/VCR to the field to view and record what the plane is seeing. Has anybody heard of video in ports being hacked onto these or other cameras?


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RE: 2.4ghz 2000mw transmitter and receiver -CHEAP - 9/29/2005 8:34:01 PM   
JettPilot



Posts: 1151
Joined: 4/18/2005
From: Paradise, USA
Status: offline 		Hi CritterHunter,

Its been a while since I read this thread, but im guess you really like the live video I flew all afternoon yesterday (2 hours in the air) using my video goggles and had a great time As far as your questions.. The foil finish in your plane will totally block radio waves at 1.2 and 2.4 GHZ, you need to have your antenna below that if you want it to work well. Vertical orientation is best, because the most signal radiates off the sides, with the weak spots being on the ends of the antenna. Very rarely is the airplane perfectly above you, and when its directly above, you are ok with a weak signal because there is nothing to block it. Its when the airplane is to the front and sides of you where you start getting your longest distances, and you need strong signal to overcome the distance and blockage from trees etc... Mount the TX antenna vertical below your plane and you will get the best all around signal.

Build the patch antenna, it is awesome and will GREATLY improve your reception. You do not need a frequency counter to build one, just use the frequency listed on the transmitter, and that will do... Make sure you get the measurements as close as humanly possible when building your patch. Even just a little off the measurements listed for that antenna will really hurt its performance. Also make sure you use Microwave rated coax to feed it. Regular TV and Radio coax is useless at 2.4 GHZ and your antenna will barely work at all.

Mose importantly, make sure you post some really cool vidoes, I would like to see your flying

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RE: 2.4ghz 2000mw transmitter and receiver -CHEAP - 10/2/2005 9:57:15 PM   
bruce_lee


 

Posts: 109
Joined: 1/24/2005
From: rotherham, UNITED KINGDOM
Status: offline 		has any one got theirs yet?

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RE: 2.4ghz 2000mw transmitter and receiver -CHEAP - 10/3/2005 12:28:40 AM   
Skycam41



Posts: 516
Joined: 9/8/2003
From: Fort Macleod, AB, CANADA
Status: offline 		Hopefully in the next day or two

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RE: 2.4ghz 2000mw transmitter and receiver -CHEAP - 10/3/2005 3:37:10 PM   
critterhunter



Posts: 2507
Joined: 9/24/2004
From: Brook Park, OH, USA
Status: offline 		I ordered mine on Sept 29th...When did you guys order and where is yours shipping to? My delivery point is Ohio. Hope they aren't back ordered or something as when I bought it said 4 in stock. By the way, with shipping the US Dollar price came to about $56. A really good price for a 2w 2.4ghz system is it does what everybody hopes it does.

Maybe Randall or somebody else will know the answer to this. For now I'll be using the CMOS camera off my 800mw 1.2ghz camera. This camera gives a pretty good picture for a CMOS. It's rated at 9 to 12V. Is there a power lead off the 2.4ghz system for the camera? If so, what's it's voltage output? Either way, what I'm wondering is if I feed the camera off the 5 volt regulator found in the 2.4ghz TX (I assume the TX runs on 5 volts via a 12 volt power source?) I wonder if this camera will work on 5V? Guess the only thing to do is try. I'll be using a 11.1V lipo the plane runs on. I have a few options here...run the camera directly off the lipo voltage...Run the camera off a 9V regulator I have it wired to now...Run the camera off the 5 volt regulator in the TX. Ideas? I'd like to keep weight to a minimum which means I'd like to not use the 9V regulator, although this chip weighs almost nothing.

Thanks for the info on antenna position. Haven't tried verticle with the 800mw TX yet...and will probably not mess with it for a while since the 2.4ghz system will be my choice on the plane. May stick the 800mw unit on a boat or truck. Actually, I was thinking of putting it on a boat. I do a lot of jump shooting pounds for ducks and geese. Many of these ponds are strip mined which means they are long, narrow, and go around corners. It'd be nice to just drive the boat around the bend to check for birds without having to walk the thickets.

Still looking for somebody to chime in on a cheap good camera to replace the CMOS. I would guess I'd want a 5V since that's what the regulator in the TX uses.


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If you believe in Global Warming then shut your mouth. All that hot air is warming up the planet, remember?

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       Post #: 35

RE: 2.4ghz 2000mw transmitter and receiver -CHEAP - 10/3/2005 3:40:33 PM   
randall1959



Posts: 863
Joined: 8/29/2004
From: Bolckow, MO, USA
Status: offline 		Yes, there are two sockets on that tx. One is in and one is output. Back when I was using a CCD camera I would plug it in and power it off the video tx. Don't worry critter. You'll be fine. You can also use your 3 cell lipos to power it.

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RE: 2.4ghz 2000mw transmitter and receiver -CHEAP - 10/3/2005 11:12:01 PM   
bruce_lee


 

Posts: 109
Joined: 1/24/2005
From: rotherham, UNITED KINGDOM
Status: offline 		lol beat me too it by miles.. that battery of yours will be perfect for it..

EDIT: also i bought mine on the 21st of sept and got it on the 28th, im in the uk..

< Message edited by bruce_lee -- 10/3/2005 11:14:25 PM >

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       Post #: 37

RE: 2.4ghz 2000mw transmitter and receiver -CHEAP - 10/5/2005 5:12:09 PM   
Skycam41



Posts: 516
Joined: 9/8/2003
From: Fort Macleod, AB, CANADA
Status: offline 		Mine arrived today, very well packaged I might add. Removing the case reduces the weight consderably! I see that the power input has a range of 9-12v. Anyone modified theirs for the 5V regulator that Randall was speaking of? I am electronically "challenged" and need some step by step instructions if anyone is able to give them!

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RE: 2.4ghz 2000mw transmitter and receiver -CHEAP - 10/5/2005 8:48:11 PM   
bruce_lee