Wireless modules and simple setup, what is required?

[tasmod]

Hi Roger and all,

Sorry I've not replied but I'm on a limited internet connection.

Thanks for that info Roger. Unfortunately the site is full of 433MHz stuff already and they are suffering from clashes occasionally, hence 868Mhz requirement.

I believe the Ciseco modules are serial input but transparent modules as well, I'm not sure regarding this, anyone know better ?

They do have a longer range with suitable smaller sized aerials than 433.

His requirement is up to 3km range in semi open environment, point to point. They will be used in parkland with odd tree here and there. I will be able to carry out range tests once finalised and suspect that one yagi and one whip will suffice. If not, two yagis is not out of the question.

They will be in use for just one day occasionally during the year, probably no more than 3 times. They will be temporary and fully portable.

Rob