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Author Topic: Really bad FPV range  (Read 3546 times)

grahamjb

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Re: Really bad FPV range
« Reply #15 on: June 07, 2017, 09:06:59 PM »

Whereabouts in London are you ? I'm in SW London
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ali101

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Re: Really bad FPV range
« Reply #16 on: June 07, 2017, 09:42:28 PM »

im in sw2 , brixton
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grahamjb

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Re: Really bad FPV range
« Reply #17 on: June 08, 2017, 11:07:11 AM »

Quote
im in sw2 , brixton

PM sent
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Ratty

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Re: Really bad FPV range
« Reply #18 on: June 08, 2017, 11:08:06 AM »

Have you made sure youre not using a RP-SMA antenna on a SMA  Vtx?
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ali101

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Re: Really bad FPV range
« Reply #19 on: June 08, 2017, 06:20:21 PM »

My vtx is sma female and my antenna is SMA male so the pin is connecting.
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ali101

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Re: Really bad FPV range
« Reply #20 on: June 23, 2017, 10:15:21 PM »

Hi guys i have still not found the fix of my problem so can you guys kindly give me some more suggestions. :)
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chris-s

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Re: Really bad FPV range
« Reply #21 on: June 23, 2017, 11:20:08 PM »

Assuming you have got good wiring and correct voltages, then It can really only be one of three things (in order of likelihood)...

1. Wrong channel
2. Blown transmitter
3. Faulty antenna

I guess there is a slight possibility that the receiver could be faulty, but not very likely in my experience.

Without special equipment, the only way to identify 2,3 or 4 is by a process of elimination using other parts. If meetings up with someone isn't practical then I don't think you can do much more without buying another transmitter (can be a cheap one so long as it supports compatible frequencies) or send your kit to someone willing to test it for you.

Chris
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Coyote

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Re: Really bad FPV range
« Reply #22 on: June 24, 2017, 09:18:32 AM »

If you are only getting 1 meter the transmission must be in the micro watts region. Even 1mW will get further than 1m.
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beesleyboy

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Re: Really bad FPV range
« Reply #23 on: June 24, 2017, 11:15:05 AM »

I'm in Peckham working at the moment, and have my 5.8 sharks with me, I can see if I can get a signal from your transmitter with them if you like, I just lost the antenna on my little quad, and only getting a meter now. Lol
need to fined a little whip antenna for it.
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ali101

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Re: Really bad FPV range
« Reply #24 on: June 25, 2017, 03:54:52 PM »

Assuming you have got good wiring and correct voltages, then It can really only be one of three things (in order of likelihood)...

1. Wrong channel
2. Blown transmitter
3. Faulty antenna

I guess there is a slight possibility that the receiver could be faulty, but not very likely in my experience.

Without special equipment, the only way to identify 2,3 or 4 is by a process of elimination using other parts. If meetings up with someone isn't practical then I don't think you can do much more without buying another transmitter (can be a cheap one so long as it supports compatible frequencies) or send your kit to someone willing to test it for you.

Chris


I have gone through all the channels available and the signal is the same. However, it might be a blown transistor bit I don't think it a faulty antenna as I have just bought the antennas so they are new, it can also be 4. But I am sending my VTX to someone so they can test it for me.
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ali101

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Re: Really bad FPV range
« Reply #25 on: June 25, 2017, 03:59:21 PM »

If you are only getting 1 meter the transmission must be in the micro watts region. Even 1mW will get further than 1m.

Sorry, i don't understand what you mean but my transmitter is a 250mw, however, I am not sure if the mw stands for micro or milla but I am sure its milla watt.
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Steve W

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Re: Really bad FPV range
« Reply #26 on: June 25, 2017, 04:03:55 PM »

What he means is even with 1 milliwatt you should be getting more than 1 metre distance so it's very likely that your transmitter is putting out microwatts if it's blown, which would explain the bad range.
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ali101

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Re: Really bad FPV range
« Reply #27 on: June 25, 2017, 04:37:15 PM »

Would there be a way to check if it was giving out microwatts with a multimeter
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chris-s

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Re: Really bad FPV range
« Reply #28 on: June 25, 2017, 07:34:33 PM »

No, not on own at least, you need special equipment
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Steve W

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Re: Really bad FPV range
« Reply #29 on: June 25, 2017, 08:00:30 PM »

The simplest way is to simply install another VTX in its place and see if it all works. If so, your VTX is toast.
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