Total posts : 45366
The documentation I had with my FM100B stated that it had 10mw output. Now, I always take any claims of output with a grain of salt.
In reality, using the telescopic antenna, it didn’t have significantly more range than my Canadian certified Decade MS-100 (maybe a few hundred feet). The signal did have more of a punch, in the sense that there were fewer dropouts in places where my Decade’s signal just disappeared, and it was obvious that the field strength did exceed Canadian regulations. So I never did use it for broadcasting. The telescopic antenna is quite small, and it must introduce quite a mismatch, if the spec’ed power levels are totally accurate (which I do doubt, at least in my unit). It could also be why there might be problems with heat, as some have mentioned.