Just back from the field after testing 5 Whole House 3.0 tranmitters for field strength.
Exact same setup as for all my other field strength tests. Exactly.
I don't feel like typing up a big fancy pdf for this one, LOL.
I tested 5 Whole House 3.0 transmitters, all within a minute or two of each other, under identical conditions. Of the 5, field strength at 3 meters ranged from a low of 5635 uV/m to a high of 7585 uV/m. Remember, legal is 250 uV/m.
So, one guy would have received much better coverage than the other 4 guys. And they're ALL illegal. Compare to the C. Crane I tested a week or so ago. All under the limit -- I believe the high score among those was 110 uV/m under identical conditions.
This is a big part of the Part 15 FM problem. None of the different transmitter brands are even close to being "on the money". And since the WH 3.0 is certified, people buy it and use it's coverage as a standard for a legal device. Counting last year I've now tested 6 of these all under the same conditions and all were illegal.
I did not test these with the secret "Canadian" setting, nor did I test them with the illegal but still included in the US version, alternative long wire antenna.
This is why you can watch videos on Youtube of guys demonstrating their Christmas light displays using the WH 3.0 with great results, then driving away in their cars to show off their coverage. They're several multiples over legal.
TIB