Last time I posted on this topic, I was informed that I was doing it wrong. Namely, the WRL-084 chips are class 1, but I was using class 2 devices on the other side, hence the super limited range.
I’ve now tried a few different class 1 devices on the other side, talking to the WRL-084, and the range really isn’t any better.
So, has anyone out there actually used a WRL-084 in a pure class 1 scenario, and gotten class 1-style range out of it?
The antenna design and matching network are critical. Have they been optimised.
Leon
We’re just using the built-in antenna on the chip, and some consumer variety class 1 USB bluetooth dongles.
I only have experience with the RN-41 module (WRL-08497) which gives me ranges of at least 50 ft indoors with obstcles in the path (walls and metal cabinets). I haven’t tried line of sight to see what the maximum is though. Which exact module are you using?
WRL-08474, the SMD model.
parlar:
We’re just using the built-in antenna on the chip, and some consumer variety class 1 USB bluetooth dongles.
Have they been designed properly? Getting matching networks and antennas optimised needs expensive equipment and lot of expertise.
Leon
Can’t say. I’m not necessarily hoping for the full range of class 1, but I’d expect that if I purchase devices that advertise themselves as class 1, then I shouldn’t have to worry too much about antennas and such. I guess I was wrong?
They probably used a Class 1 chip to impress people and didn’t bother much with the important stuff. That’s the most likely reason for the poor performance.
Leon
You might want to try out the RN-41 module. I have had excellant results with this module and no problems.