Thank you ;) A proposito, sono stato parecchie volte sul isola d'Elba che ritengo uno delle migliori isole del Mediterraneo. Le spiagge e paesaggi da favola piu' la cucina Toscana ;) un giorno ritornero'! Un saluto da Russia!
I good video i have a inverted problem, my 1.2ghz VTX (1.5W) is interfering with my RC 433mhz signal. The video is clear and clean all the time, but I lose the RC signal just 100m away. If I replace the 1.2ghz VTX with a 5.8ghz VTX (600mw)I can go to more than 2km with no RC signal problem (rssi 90%). How can i solve this problem ??
Yes, you need a bandpass SAW filter connected between the antenna and your RC RX. I'm planning selling these for 433/868/915 mHz, price tag will be about 20-25 usd. These filters COMPLETELY solve the problem of swamping RC RX with strong signals nearby.
@@WRXMSK Great ¡¡ Do you have any online Store ?? In my particular case where I am using a WolfBox 433mhz (1,000mw) on the RC and a VTX at 1.2ghz (1500mw), which filter would be suitable to install on my RX Receiver? Thanks again
They usually rob up to 6dB of front end sensitivity, and many receivers will overcompensate with AGC, bringing the problem back, albeit at a lower level but with higher noise levels, degrading image quality even further. Better to run an active LNA with sharper cutoff filters to keep the receiver in check..
i assume you used telemetry, correct? if so, your air unit was still transmitting and your vRX directional antenna was pointed right to it. Also, your air unit could be "polluting" your main vcc supply causing interference at the source. if you still have the modules, i suggest you repeat the test with disabled telemetry.
I'm far from thinking that vRX could be somehow affected by 60mw telemetry transmitter flying at such a distance... However, increasing a distance between vRX and RC relay on the ground really helps a lot.
@@МистерТвистер-з8т по последним тестам - лучше, сам перешел на 868, но нужен полосовой фильтр на входе приемника, чтобы избежать забития мощным сигналом передатчика на 1.2. Иначе 5-7 км и всё. Писал об сем на рцдизайне: forum.rcdesign.ru/blogs/153258/blog24001.html Там все обоснования, измерения, АЧХ и т.д.
Кстати есть и обратное влияние, когда передатчик 1.2 ггц наглухо забивает приемники радиоуправления, причем любого диапазона, 433/868/915. Из-за этого фейлсейфы начинаются уже на расстоянии всего несколько километров. Решается применением полосового фильтра на входе приемника. Я планирую их продавать, если надо, дайте знать.
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Very informative.. thank you very much!!
Thank you ;) A proposito, sono stato parecchie volte sul isola d'Elba che ritengo uno delle migliori isole del Mediterraneo. Le spiagge e paesaggi da favola piu' la cucina Toscana ;) un giorno ritornero'! Un saluto da Russia!
@@WRXMSK grazie mille a te!! Se torni fammi sapere.. Saluti dall'Elba
I good video
i have a inverted problem, my 1.2ghz VTX (1.5W) is interfering with my RC 433mhz signal.
The video is clear and clean all the time, but I lose the RC signal just 100m away.
If I replace the 1.2ghz VTX with a 5.8ghz VTX (600mw)I can go to more than 2km with no RC signal problem (rssi 90%).
How can i solve this problem ??
Yes, you need a bandpass SAW filter connected between the antenna and your RC RX. I'm planning selling these for 433/868/915 mHz, price tag will be about 20-25 usd. These filters COMPLETELY solve the problem of swamping RC RX with strong signals nearby.
@@WRXMSK Great ¡¡
Do you have any online Store ??
In my particular case where I am using a WolfBox 433mhz (1,000mw) on the RC and a VTX at 1.2ghz (1500mw), which filter would be suitable to install on my RX Receiver?
Thanks again
@@WRXMSK
D'altra parte vivo a Maiorca, che penso sia anche una bellissima isola del Mediterraneo? jeje
Se vieni a volare fpv contattami
You need to use a Notch filter on your VRX to use it with 868 TX
Tried this in 2016 with TBS Crossfire, it didn't help.
@@WRXMSK did you also replace the saw filter inside vrx?
@@slavikarg No, but I tried to get rid of the interference by using non-comtech tuner based receiver. It affects them all.
They usually rob up to 6dB of front end sensitivity, and many receivers will overcompensate with AGC, bringing the problem back, albeit at a lower level but with higher noise levels, degrading image quality even further. Better to run an active LNA with sharper cutoff filters to keep the receiver in check..
i assume you used telemetry, correct? if so, your air unit was still transmitting and your vRX directional antenna was pointed right to it. Also, your air unit could be "polluting" your main vcc supply causing interference at the source. if you still have the modules, i suggest you repeat the test with disabled telemetry.
I'm far from thinking that vRX could be somehow affected by 60mw telemetry transmitter flying at such a distance... However, increasing a distance between vRX and RC relay on the ground really helps a lot.
Здравствуйте, порекомендуйте пожалуйста надежную и недорогую лрс для видео 1.2ghz ,чтоб летать в городе
Я очень не советую летать в городе :) А так как раз QLRS на 433 мгц и советую.
@@WRXMSK А частота 868 не лучше?
@@МистерТвистер-з8т Лучше анализатором пройтись по городу и посмотреть, какие частоты больше всего загажены. Может 868 лучше будет.
@@МистерТвистер-з8т по последним тестам - лучше, сам перешел на 868, но нужен полосовой фильтр на входе приемника, чтобы избежать забития мощным сигналом передатчика на 1.2. Иначе 5-7 км и всё. Писал об сем на рцдизайне: forum.rcdesign.ru/blogs/153258/blog24001.html Там все обоснования, измерения, АЧХ и т.д.
какая частота 1.2g которой помешает 868mhz ? 1360mhz ?
868 в той или иной степени влияет на весь диапазон 1.2. Не думаю, что есть особая разница по частотам.
Кстати есть и обратное влияние, когда передатчик 1.2 ггц наглухо забивает приемники радиоуправления, причем любого диапазона, 433/868/915. Из-за этого фейлсейфы начинаются уже на расстоянии всего несколько километров. Решается применением полосового фильтра на входе приемника. Я планирую их продавать, если надо, дайте знать.
Please sell them