459MHz UHF legal Tx and Rx - Arduino based programability.

[thundead]

haha I'm actually using fewer packets (8byte payloads) at 9600 baud. frequency hopping is set on purpose to 25hz because the chip needs time to settle before hopping again (otherwise the rssi goes nuts and unreliable). that's what I saw anyway.

Melih's runs at 57600 baud, 17bytes payload.

[papa_lazerous]

I really cant see it being an issue, it was a known factor from the beginning that this RF module wouldnt be at it's most efficient power at 459Mhz.  I would be interested to know if the antennas used during the sweep where tuned for 459Mhz or another frequency?

[Dennis Frie]

Arh 9600 baud, - that makes more sense. The lower payload should also help quite a bit, great.

[Dennis Frie]

I really cant see it being an issue, it was a known factor from the beginning that this RF module wouldnt be at it's most efficient power at 459Mhz.  I would be interested to know if the antennas used during the sweep where tuned for 459Mhz or another frequency?

- and with stock antennas:

- The sweep with antennas was done with the standard antennas from flytron, which should be tuned for 430 MHz.
The sweep where the modules have been connected directly with cable and 60 dB attenuater is the interesting sweep.

It might not be an issue, but if the range turns out to be 50% of the range at 433 mhz it might be an issue for some.

[papa_lazerous]

Well there are enough who fly on 433 and just keep quiet about it.... ;)

[Devonian]

I'll have to get my finger out and test the only RF22B module that is physically tuned for 459MHz output.

I changed several components on my Tx board and it is an exercise I will not be repeating!!!
My Rx board is still 'default' values.

Laters...

Nigel.

[Devonian]

OK, am I being a bit dim or what?

Do I just paste the Spectrum Analyzer code into the Rx pde and add the line
#define SPECTRUM_ANALYZER 1
into the config.h

When I do that, it won't compile due to errors (Arduino version 0023).

Also, do we connect the FTDI to the programming port or channel 9 servo out (where Mihai outputs RSSI)?

Sorry, age, end of a long day an all...

Nigel.

[papa_lazerous]

Ian congratulations on winning the largest cut and paste of the week competition  :P

[Coyote]

I flew with OpenLRS and Thundeads V3.4 code today. Not far, but I flew 1.3km on 50mw ( yes not 100mw ) with no glitches.

However, with anything higher than 50mw output power my Picture was wrecked and couldn`t fly at first. We established it was my Fatshark Dominators were the problem, his Fatshark base goggles were fine. After a while we narrowed it down to my in built 2.4ghz rx in the Dominators, I removed it and goggles were fine again

[Devonian]

Nope, still won't compile in Arduino v0023.

@ Dennis,

Can you send me your sketch/pde for thUndeads 459 Rx with spec analyser code inside?
If it's OK, PM me and I'll let you know my private email address.

Nigel.

[Coyote]

It doesn`t work with Thundeads rx code Nigel, just Melih`s rx code

[Dennis Frie]

I think it works just fine with thUndeads version as well (I will give it a try). I'm not able to send PM at this forum (probably due to too few posts), but feel free to e-mail me at Dennis.frie REMOVETHIS@ gmail.com

[Dennis Frie]

Just did a quick test. Probably due to the lower baud-rate settings etc. it needs a lot more time to get stable readings with theundead mod. I would recommend to use the default firmware for spectrum-analyzer. I'll ask Melih to include it as standard in next version.

[Splashy]

Hi, please find attached a zip of the 1_11 version of the code modified for the Spectrum analyzer.

The code is only to be used for the Spectrum Analyzer ..

[Dennis Frie]

Hi, please find attached a zip of the 1_11 version of the code modified for the Spectrum analyzer.

The code is only to be used for the Spectrum Analyzer ..

That's the old code - please don't use that.