#Why am i getting RX LOSS so much? Is this normal?

50 messages · Page 1 of 1 (latest)

verbal aurora
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RSSI dBm and LQ look fine. The flat antenna BetaFPV RX is terrible, but I don't think that's the issue. Seems more likely to be strong RF interference at the top of these buildings, and also potentially resource exhaustion/overheating of the FC after the climb.

jovial trout
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is there any failsafe settings i could try?

jovial trout
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how does vegan fly up like 380m?

verbal aurora
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strong RF interference at the top of these buildings

jovial trout
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On crossfire i never had this before, and i flew the same places with it.

verbal aurora
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Crossfire is 900MHz, the ELRS hardware you're using is 2.4GHz.

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There is also 900MHz ELRS hardware, and dual band 900MHz/2.4GHz hardware you could use if several 2.4GHz interference is a problem where you fly

jovial trout
fluid hound
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did you "discover" the sensors?

jovial trout
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discover?

fluid hound
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Model Menu -> Telemetry page, discover new sensors (with tx and rx bound/connected)

jovial trout
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ah, no

fluid hound
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better if you can delete everything first so that the link stats would come first

jovial trout
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i see, will do another one just now

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what do you think about the bench test?

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on the elrs page it says between -25 and -40 is fine.

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mine is at best -55

fluid hound
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seems pretty normal for this particular receiver..
but how do you have oriented the tx antenna?

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what happens if you hold the tx as if ready to fly?

jovial trout
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will do that now. the rx antenna is oriented as it came from betafpv

fluid hound
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but it's the tx antenna that I want to know the orientation of..

jovial trout
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oops, sry, yeah, hmm, just normally i guess?

fluid hound
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have you tried with the tx antenna twisted 90degree from its current orientation?

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(vertical)

jovial trout
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You mean like this?

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No i have not, but would that not negate or at least negatively influence my reception in height?

fluid hound
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!antenna

fluid hound
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log's better.. link stats present.

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rssi dBm seems pretty normal for this receiver, and is almost the same as for the telemetry rssi dBm

jovial trout
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its still worse than with my ranger nano on the zorro, didnt do a benchtest, but a rangetest, there is a link above.

fluid hound
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I'd suggest trying a different receiver, at least with the bench test so you can see how bad this particular antenna is (on the betafpv lite rx flat).. (you can test with an ep1 or a betafpv lite rx with the smd antenna/tower)

jovial trout
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yes, the antenna is not good, but the link shouldnt cut out without a warning or whatnot. it should at least give me room to somehow react. it feels like someone rips off the ranger nano at random. or some power issues on the tango itself, as this has happened on crossfire (but i fly WAY more whoops than my crossfire quads)

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i checked the mod of the module bay, seems fine, i checked if i could see anything wrong or browned out on the tangos pcb or the battery, seems also fine.

fluid hound
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have you tried with an external 2s pack on the module itself just to eliminate the power-related concerns?

jovial trout
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no i did not, but as this has happened on crossfire also, i don't think its the module and i know my testings are a bit shitty, but the rangetest i did showed better rssi on the ranger+zorro as on the ranger+tango. consistently -7 to -10 db worse on the tango.

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i fly a lot guerilla with this thing. sometimes 7 days a week. the rx loss thing has happened 6 times now. 5 times in not-so-good situations. i got lucky everytime. my son flies his air65 on his zorro, he never had it once.