Frequency and interference

[Uttam1]

Hi guys,

We intend on using a modified ( lightened ) paparazzi autopilot board on a small MAV. Here's the problem. The video system operates at 2.4ghz, and the radio modem we intend to use ( Maxstream XBee Pro ) operates at 2.4ghz too. Would the two interfere? Are there equivalent light weight radio modems operating at other frequencies? 900mhz?


-TIA
Uttam

[skogsvargen]

I am using the aerocomm AC4868 which is the European version of the 900Mhz AC4490. I am very satisfied with my modules so far. The weight is 20g (0,75Oz).

/Magnus

[_helitron_]

Hi Uttam,

I use it also and bought a complete SDK (includes two modules) here last year

http://www.mouser.com/search/ProductDetail.aspx?R=SDK-AC4868-250Mvirtualkey52610000virtualkey814-SDK-AC4868-250M

Here a single module

http://www.mouser.com/search/ProductDetail.aspx?R=AC4868-250Mvirtualkey52610000virtualkey814-AC4868-250M

As Magnus mentioned already for your country you need probably the 900 MHz version

http://www.mouser.com/search/ProductDetail.aspx?R=AC4490-200Avirtualkey52610000virtualkey814-AC4490-200A

Cheers,

/Erwin

[AntonK]

may I ask how you lightened the paparazzi board. Oh and to your question. They do interfere but not nearly as much as you would imagine.

Anton

[Unterhausen]

anyone have anything to say about the maxstream modules?

[vector_vortex]

I can second the aerocomm modules are pretty good, I have a AC4790 dev kit which was the cheapest option for me at $199US with 2 1/4 wave whips and dev boards/cables etc. But they are really easy to interface to and they are pretty much pin compatible across the frequency range, if the 900Mhz dont work, pop in a 2.4 or whatever comes in the future.
When studying the differences between aerocomm and maxstream modules was that the maxstream module, the 9Xtend needed a 5V supply for full 1W output whereas the aerocomm ran off 3.3V the same as the micro etc. that was the deciding factor for me.

Have fun

Joel