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DeveloperPermalink Reply by Andrew Tridgell on April 22, 2012 at 5:06am

What frequency is the Dragon Link on? (I seem to remember it as 433MHz, is that right?)

Certainly its considered a good idea to not have two systems in the same band in the same aircraft if you can avoid it. It can work, but if you do it then you better do some careful ground testing at long range to ensure the two systems don't interfere.

If both systems can be configured to use different parts of the band that can help. For example, the 900MHz band in the US is quite wide (902 to 928MHz), so you could easily setup two systems that are separated by a good frequency gap. That isn't as good as using two different bands, but it will help a lot. You need to use 50 hopping channels in the US, so you can't setup a link on a very narrow range of frequencies, but its easy to fit 50 channels in well under half the US 900 ISM band.

I'm curious, what 900MHz video system are you using?

Cheers, Tridge

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Permalink Reply by José "Kala" on April 22, 2012 at 1:04pm

Hi Andrew

Many thanks for your reply, actually I am using a video system that, in fact, isn't is a 900 mhz system although is a 1200 - 1300 mhz and I use to work with 1240 mhz.  System is this one: http://www.electronicarc.com/catalogo/product_info.php?products_id=...

But I was affraid about a possible problem within video and radio 3DR in 900 mhz, because DL is 433... But after your reply I am thinking may be there isn't a problem...

thanks again! 

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