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

[tasmod]

Incidentaly, Ciseco claim over 100km range with parabolic antennas, yes 100km.

However they say it probably won't be legal so don't do it. ;-)

[Dick Ivers]

Hi Rob,

I would like to start a project similar to yours. I'm not sure what questions to ask, but just as a beginning here are the project parameters:

Link: One-way communication from a ground based transmitter to an airborne receiver in a flying vehicle.

Range: 3 km minimum line of sight

Frequency: 902 to 928 mhz ISM license free band preferred

Power source: Battery operated on both ends. 3.3 volts doable with regulators.

I looked at the CISECO products and they look good. I think I would choose the ARF high power transceiver on the sending end and the SRF unit for the receiver. The receiver must be very small and light to fit the flight vehicle.

I have considerable experience with PIC programming and printed circuit board development, but no background with wireless stuff. That's the problem and leads to the questions: Where is the documentation on the CISECO products? What's on the vendor's website is sparse to nil. How do I get started?

Dick

[Dick Ivers]

Delete double post

[Dick Ivers]

Hi, The Forum posting was glitching a couple of days ago. My post #15 didn't update the thread to the top of the list. So this is a test to see what happens.

[tasmod]

Hi Dick,

Can't stay on, just to let you know I won't be ordering the modules till this weekend, so I've no info to add.

Try here for many docs Docs

XRF Datasheet XRF

ARF is just a high power XRF, uses same instructions for serial input.

Rob