I have a CMT-SBT300WB, The supplied antenna, better known as a cheap length of wire, is totally useless! I have only had my unit for a few weeks, but am already thinking of losing the warranty by fitting a BNC socket onto the rear panel to allow the use of a decent external antenna! Having paid over £300 for this unit, I would have at least expected a useable external socket on the rear, rather than the amazingly cheap and nasty white plastic plug and wire antenna! As reception where I live is none existent, it may even be accurate to say that the unit is not fit for purpose, sadly everything else the unit does is great, such a shame, spoiling the ship for a pennyworth of tar methinks!
