Interesting. Yeah that 25w one has the bh1415 chip and I hear it has decent audio quality.

Thing is, audio can be great and adjacent stations may not be affected but you could still be interfering outside the band and not know until it's too late.

I'd like to see these rigs compared on a spectrum analyser. Everything I look at online or in sales ads looks cooked up. Theres either no visible reference level or no harmonic frequencies shown within the chosen span. It's frustrating.

Don't suppose you put yours on a SA?