I have this Yaesu FT-270R waterproof HT that I really like except for one problem. The TX audio is low to the point of being unusable. To make matters even more annoying, sometimes the TX audio is almost acceptable but then a few days later it is like talking to a brick again. I haven't done any scientific correlation studies or anything but it almost seems to change with the weather. Excluding some of the Chinese made bargain radios, Yaesu makes other waterproof radios as well as other manufacturers all of which don't seem to have this problem. One solution is to always use a speaker/mic with the HT, but I would like to fix the root problem. Two solutions that I have seen searching the internet are to remove the waterproof diaphragm over the mic and increase the signal deviation. Removing the diaphragm kinda defeats the purpose for having a waterproof radio and I would rather not muck with the transmission characteristics.
Does anyone have any words of wisdom regarding this?