I have just tonight set up my brand new 6300 but despite never even transmitting the internal fan is very loud! Is there a setting or issue I should know about? It is very loud. I am running the 1.4.3. Software. Thanks.
I've had a 6300 since October. My fan has come on (or probably gone into high speed mode) only once and it was loud. In this one instance, I probably made a long transmission (SSB) but was running only 60 watts into my amp. It scared me. If it happens again, at least I'll know what it is and that it goes away in 30 - 45 seconds. Good luck with your potential issue.
I started to use my Brand new 6300 yesterday....I used (max power) for around 5 hours.....and didn't even hear the fan...however...it depends at what environment you have your radio shack....my was really lousy ...I have watched at youtube some videos about same complain...good luck