Some pictures of the innards of the Tesco Rad108 multiband pocket radio are to be seen attached to this post in another discussion elsewhere:
no markings visible on the chip
http://www.boards.ie/vbulletin/showp...8&postcount=17
MW sensitivity on the RAD-108 is indeed rather poor despite a longer ferrite rod than some similar budget receivers. Maybe the ferrite rod has dubious composition and maybe substituting another similar sized ferrite rod from a junked old radio might improve matters?
That said with a strong LW/MW signal the audio is crisp, unlike the 'muffled' AM audio from many other recent radios (both DSP and non-DSP) which makes listening unpleasent due to their rolloff above just 2.5 or 3kHz or so.
very acceptable performance on FM for what it is, with good close-in selectivity.
Some images of the whistling+buzzy sounds on portions of the FM band though when used near mobile phone base stations!
On mine - the top section of the telescopic rod came detached after a while (must try and replace it).