Total posts : 45366
No, there is NO access to the power adjustment with a sticker removal. In fact, I don’t even SEE any stickers on this at all!
You’ll have to pop out the two little rubber “feet” on the bottom and remove the small Phillips type screws under them, then also remove a small Phillips screw in the battery compartment. Once this is done the back cover comes off quite easily and the adjustment control is right there, very obviously mounted, that you turn with a screwdriver. Turning it counterclockwise increases the power. I’ve read on various sites that this control is somewhat delicate and some users have reported breaking them. But people with some electronic experience probably realize that a tiny PC mount style potentiometer is a rather delicate device!
It may have been the previous model that had the adjustment under a sticker, but definitly not this one.
Clearly if you adjust the power it’s pretty easy to wind up WAY over the legal limit.
When we discuss range, they will ALL be the same at the same field strength power. 250 uV/m is just that and it will only go so far. It’s like saying a Ferarri goes faster at 60 miles an hour than a Chevy does at 60 miles an hour. Even if you went with some sort of improved antenna it works BECAUSE it’s a gain antenna that is increasing the radiated signal. You could line up every Part 15 FM transmitter on Earth and if they are all adjusted for 250 uV/m at 3 meters, they’re all going to have the same range given the same geographic conditions. I only tested range with this one because it was lower powered than the others I tested and I wondered how far it would actually go.
I did note that this transmitter has a shorter antenna than the Whole House 3.0 or the Decade CM-10 that I tested. But again, changing the antenna voids the certification.
There’s a (rather crappy) video on YouTube of someone showing how to make the adjustment, but it’s blurry and poorly lit, but it’s at: