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Author Topic: Quick and dirty range calculator  (Read 576 times)

Coyote

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Quick and dirty range calculator
« on: November 17, 2018, 12:54:41 PM »

This one is not a greatlycomprehensive range calculator, although clicking "Advanced" will allow further options still.

In simple mode it only allows certain antennas to be used but also takes a lot of guesswork out, the others are great as long as you know everything, this one gives you an ok ball park figure but petty fool proof to get the options correct.

http://www.maxmyrange.com/
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English Turbines

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Re: Quick and dirty range calculator
« Reply #1 on: November 17, 2018, 01:22:10 PM »

This one is not a greatlycomprehensive range calculator, although clicking "Advanced" will allow further options still.

In simple mode it only allows certain antennas to be used but also takes a lot of guesswork out, the others are great as long as you know everything, this one gives you an ok ball park figure but petty fool proof to get the options correct.

http://www.maxmyrange.com/

  Thats a nice Website Ian....As far as our 868mhz Firmware is concerned, we are again hamstrung by the EU jobsworths and their infernal LBT obsession.

                                                                                              :vulture:

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FPVSteve

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Re: Quick and dirty range calculator
« Reply #2 on: November 17, 2018, 04:10:21 PM »

Hmm - I mean I like it but it only shows 1.28km for skew to skew on 200mW 5.8Ghz which is wrong.

I guess it's better to assume a lower maximum in theory though than claim you can go further than reality allows.
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Epicurus1

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Re: Quick and dirty range calculator
« Reply #3 on: November 17, 2018, 04:45:06 PM »

I've been using this site for a few month funnily enough.

One thing I've been curious about is the default RX sensitivity is -85db. Now is this representative of your average rx? For example my 2.4 Quanam receiver states something like -106db in the specs. Is this realistic? Where would the noise floor begin to become the deciding factor?
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FPVSteve

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Re: Quick and dirty range calculator
« Reply #4 on: November 17, 2018, 05:22:22 PM »

ah that explains things a bit as I have -90 nextwave receivers
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English Turbines

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Re: Quick and dirty range calculator
« Reply #5 on: November 17, 2018, 06:42:30 PM »

Hmm - I mean I like it but it only shows 1.28km for skew to skew on 200mW 5.8Ghz which is wrong.

I guess it's better to assume a lower maximum in theory though than claim you can go further than reality allows.

 Hi Steve.


  Skews and 5.8G are not a good combination at all IMO....I have a few different brands of Skew and never managed any decent range with any of them.
  Good for Whisking eggs maybe..
 
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FPVSteve

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Re: Quick and dirty range calculator
« Reply #6 on: November 17, 2018, 06:49:39 PM »

Well it's all I've ever used apart from a helical on my ground station ... to be honest I never get any dropout in normal ops so I'd disagree and say they're perfect ... different strokes etc.

Loads of people use skews!
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Coyote

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Re: Quick and dirty range calculator
« Reply #7 on: November 17, 2018, 11:03:13 PM »

Yes the quick and dirty calc ( simple mode ) presumes a -80db receiver. But clicking on the advanced tab enables your Rx sensitivity to be changed to suit your own receivers spec.
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