RE: 2.4ghz 2000mw transmitter and receiver -CHEAP  
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RE: 2.4ghz 2000mw transmitter and receiver -CHEAP - 10/7/2005 10:57:42 PM   
bruce_lee


 

Posts: 109
Joined: 1/24/2005
From: rotherham, UNITED KINGDOM
Status: offline 		could some 1 check see if both their transmitter and receiver antennas are joined where the arrow is on this pic.. becasue my transmitter isnot.. cheers , lee

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(in reply to Skycam41)
       Post #: 51

RE: 2.4ghz 2000mw transmitter and receiver -CHEAP - 10/8/2005 3:05:36 AM   
Skycam41



Posts: 516
Joined: 9/8/2003
From: Fort Macleod, AB, CANADA
Status: offline 		How did you get the antenna sleeve off? I have tried to gently pull and twist but its not budging.

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(in reply to bruce_lee)
       Post #: 52

RE: 2.4ghz 2000mw transmitter and receiver -CHEAP - 10/8/2005 3:28:51 PM   
bruce_lee


 

Posts: 109
Joined: 1/24/2005
From: rotherham, UNITED KINGDOM
Status: offline 		lol it fell off.. just pull it off ,, twist and pull should come off. it wont brake anything..

(in reply to Skycam41)
       Post #: 53

RE: 2.4ghz 2000mw transmitter and receiver -CHEAP - 10/8/2005 3:50:32 PM   
Skycam41



Posts: 516
Joined: 9/8/2003
From: Fort Macleod, AB, CANADA
Status: offline 		My TX & RX antenna's look the same, just like the picture you showed.

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(in reply to bruce_lee)
       Post #: 54

RE: 2.4ghz 2000mw transmitter and receiver -CHEAP - 10/8/2005 8:01:16 PM   
bruce_lee


 

Posts: 109
Joined: 1/24/2005
From: rotherham, UNITED KINGDOM
Status: offline 		cheers.. have you setup all your system onto a plane yet? i would really like to see a video with the transmitter/receiver...

(in reply to Skycam41)
       Post #: 55

RE: 2.4ghz 2000mw transmitter and receiver -CHEAP - 10/12/2005 3:02:32 PM   
bruce_lee


 

Posts: 109
Joined: 1/24/2005
From: rotherham, UNITED KINGDOM
Status: offline 		nnnnooooooooo, i borke my tranmitter.....

well i had 12v in and i was testing it.. it was working fine,, i unpluged the cam from the battery and then my regulator fried on the tranmitter, and a little puff of smoke cam out (((((((

skycam you know the one with the green rig around on your pic... that 1..

but the tranmitter still works, i can see that the regulator is damaged, when runing on 12v the regulator gets VERY hot but on 9v it just get's warm..

what do u think i should do? run on a lower voltage or somehow replace it..

(in reply to Skycam41)
       Post #: 56

RE: 2.4ghz 2000mw transmitter and receiver -CHEAP - 10/12/2005 3:31:03 PM   
Skycam41



Posts: 516
Joined: 9/8/2003
From: Fort Macleod, AB, CANADA
Status: offline 		Hmmmm, being electronically "challenged" I would run it on a lower voltage and monitor it for a while to see what happends. I ran a test on mine on the weekend and had my son walk around a soccer pitch carrying the TX. I tried it on 9v power and 12v power and it made no change to the picture. However, the 9v battery was sucked down pretty quick!
Mike

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(in reply to bruce_lee)
       Post #: 57

RE: 2.4ghz 2000mw transmitter and receiver -CHEAP - 10/13/2005 3:11:48 PM   
critterhunter



Posts: 2531
Joined: 9/24/2004
From: Brook Park, OH, USA
Status: offline 		I just got mine yesterday but have yet to take it apart. I'll break out the volt meter and check the regulator(s) for you guys to see what the output is. It shouldn't be a problem to power them off anything up to 12 volts or so. Even though the input says 9 to 12 volts most regulators can take in voltage all the way down to 3 or 4 volts as the main battery drains and still output the reguired voltage. Running it off 9 or 12 volts shouldn't matter in a range test as the output should remain constant at whatever the regulator is set up for. If you smoked the regulator on the TX I'd check it's output voltage and make sure the regulator is still functioning. Otherwise if it is now just passing the input voltage on you could do further damage. The regulator will help to filter out noise in the transmission as well so you might start getting static from the engine on the plane. You could always buy another regulator with the same input and output voltage ratings and replace it. Can you further describe the circumstance of the failure so we can all avoid it? Anybody check to see if it's getting hot after extended use? If it is then I'm going to install a heat sink on it.

A few quick questions...What are you guys replacing the outter case with to protect the board? I'm not sure if I'll be mounting it outside the plane or not...if the circuit board is small enough I may just carve out the body on the Stryker in one of the chambers enough to fit it. I'd rather protect it inside the plane rather than having it strapped to the body. If I decide on mounting it outside I was thinking of using heat shrink on it. Are you guys planning to fly the TX without the antenna cover or with it? I'd rather keep weight to a minimum if the antenna is strong enough to go without the cover.


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(in reply to Skycam41)
       Post #: 58

RE: 2.4ghz 2000mw transmitter and receiver -CHEAP - 10/14/2005 9:34:34 PM   
bruce_lee


 

Posts: 109
Joined: 1/24/2005
From: rotherham, UNITED KINGDOM
Status: offline 		well, i will replace the regulator, if i knew what power ratings it was.., i think it's becasue i had over 3 amp battery on it.. do you think this could cause it?, becasue it smoked the regulator when i unpluged the cam, which was on the same battery.. as soon as i unlpuged the cam it blew the regulator.. i think it was my fault..,, any way if some 1 could tell me the power rating on the reg, that would be nice.. i have not got a voltage meter any more , plus my reg is damaged now.. so it wont give the original reading.... also it dose get hot but i dont know if it did before i fried it... well i would leave the bored with no case.. and mount it in your plane as it dose not get hot.. also the antena cover .. might aswell leave it.. not going to make any difference...

well.. i hope some 1 can find me the right regulator. i dont know what im looking for .
I will be able solder another on. easily...
cheers .. lee

(in reply to critterhunter)
       Post #: 59

RE: 2.4ghz 2000mw transmitter and receiver -CHEAP - 10/17/2005 2:36:41 PM   
critterhunter



Posts: 2531
Joined: 9/24/2004
From: Brook Park, OH, USA
Status: offline 		Doesn't matter what size amperage battery you were using as the power source. The TX will only draw what it needs and not a miliamp more. In other words, as long as the voltage being supplied is within the limits of 12 volts or so it won't hurt it. Were you powering the camera from the battery or through the TX power? I would guess you were powering it through the TX power and when you unplugged the camera the TX some how had an internal power surge/draw for a split second which over amped the regulator. To avoid this, I would always unplug the TX from the battery FIRST (or turn it off if you have a switch on the TX), then unplug the camera. Have yet to open mine up due to other matters. Goose season just came in and I've been thinning the herd a bit.


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

(in reply to bruce_lee)
       Post #: 60

RE: 2.4ghz 2000mw transmitter and receiver -CHEAP - 10/17/2005 11:21:36 PM   
bruce_lee


 

Posts: 109
Joined: 1/24/2005
From: rotherham, UNITED KINGDOM
Status: offline 		ok i thought the ampage would not effect it.. yes i was useing the power output from the tx. and i think you are correct..

all i need now is a new reg.. i think it is a 5v 1, but not sure what to get..ive been looking on a good website..

http://www.maplin.co.uk/home.aspx

i dont know if i need a Negative Fixed Regulator or a positive... plz some 1 help me.. also sky cam said in a few posts back, that he got 6v on 1 side of the reg and 4 on other.. if that helps.. i think it's a 5v reg..

thanks in advance

(in reply to critterhunter)
       Post #: 61

RE: 2.4ghz 2000mw transmitter and receiver -CHEAP - 10/20/2005 7:49:15 PM   
critterhunter



Posts: 2531
Joined: 9/24/2004
From: Brook Park, OH, USA
Status: offline 		Hmmm...I only have a basic understanding of electronics from high school and personal hacking but I might be able to help a little. For one, I have yet to open mine to see what the thing looks like. There are several types of regulators out there...."3" pin types, IC chips with about 8 pins on them, etc...but they all do the same thing. They take in a voltage range of say 3 to 16 volts and spit it out at a constant 5, 9, or whatever they are meant for. I also know the new regulator will need to be able to handle the amp draw of the TX and camera (if the camera is being fed power via the TX power and not straight from the battery). Good thing to remember if you guys are using a cam that may have a hungry amp draw. Feed it via the battery and avoid routing it through the TX. Haven't looked at the TX yet but assume it isn't meant to power other devices other than it's self. If somebody had an amp meter (my voltemeter doesn't have this feature) they could check the draw of the TX and then you'd know the power rating of the regulator you'd need. Short of that, somebody could do the math and figure out what 2 watts output is in amps...plus a little bit more for the circuit board's draw. Or, you could go over my head to a guy on this website known as Troglotech. Send him a close up picture of the regulator along with any other data and he might be able to suggest a replacement part #.


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

(in reply to bruce_lee)
       Post #: 62

RE: 2.4ghz 2000mw transmitter and receiver -CHEAP - 10/24/2005 3:24:17 PM   
critterhunter



Posts: 2531
Joined: 9/24/2004
From: Brook Park, OH, USA
Status: offline 		Finaly took the TX apart. Only glanced at the board for a second or two as I had to run but it appears at first sight that there is only one regulator...the one in the middle. I think the other is just a transistor, though I could be wrong and will take a closer look later. The regulator (mid one) does have numbers on it etched into the plastic. This will make tracking down a replacement a lot easier. I'll read them and post soon, along with some voltmeter readings.

Have a few quick questions. The metal casing that the lid will pop off of appears to be some kind of RF shielding. Wonder if you can remove that for even less weight or if it will cause interference. More than likely it's to prevent the TX from causing interference with other devices in the home and not the reverse. Also, is anybody removing the RCA and DC jacks off the board for less weight? I'd rather remove them and solder right to the board but didn't look too close yet to see how big of a pain that would be.


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

(in reply to bruce_lee)
       Post #: 63

RE: 2.4ghz 2000mw transmitter and receiver -CHEAP - 10/25/2005 6:06:50 AM   
JettPilot



Posts: 1151
Joined: 4/18/2005
From: Paradise, USA
Status: offline 		You need the shielding. Some transmitters will interefere with themselves and not work at all without shielding. Taking off the jacks You just arent going to save any weight at all with that. You need a pretty big battery to power a 2000 mw transmitter, the weight you save by taking off jacks, shielding etc. is just not going to make a difference, and you risk screwiing up your board etc.

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(in reply to critterhunter)
       Post #: 64

RE: 2.4ghz 2000mw transmitter and receiver -CHEAP - 10/25/2005 11:45:15 PM