the transmitters are not interchangable is correct, but the actual anemometer itself is. I tried to peg them down and ask if the frequency range “hopped” in the same frequency as the other transmitters but said it wouldn’t work. However the sensor it self is same … the actual anenometer…
anyway, got this letter below from them.
Hello,
[i]If you have the latest design Temp/Hum Station, it has the same temp/hum sensor as used in the ISS.
The VP1 will not interfere with the VP2.the VP2 uses a spread spectrum radio which uses multiple frequencies between 902Mhz to 928Mhz. If a few frequencies are interferred with, it won’t really impact reception that much.
Typical range on a VP2 is 200’ to 400’ with up to 1000’ under optimal conditions. Repeaters are available although you probably won’t need one.
I know of know changes in the VP2 line in the near future. This is a very successful product and I anticipate it will have a long life span.Larry Smith
510-732-7814
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