UK Vintage Radio Repair and Restoration Discussion Forum - View Single Post - 6-gang FM stereo tuner heads

RichardGM · 29th Mar 2022, 11:27 am

Thanks for the answers to my question, but I'm still a bit puzzled. Yes you need to filter out the image frequency and any nearby strong signals, but most domestic FM tuners do OK without multiple stages of filtering before the mixer. Excluding the BBC's very special case of a receiver "based at the site of a working VHF/FM transmitter", when/why are those extra stages of filtering needed? Is it to receive very weak distant broadcast transmissions?

29th Mar 2022, 11:27 am	#27
RichardGM Pentode Join Date: Mar 2022 Location: Harrow, Middlesex, UK. Posts: 229	Re: 6-gang FM stereo tuner heads Thanks for the answers to my question, but I'm still a bit puzzled. Yes you need to filter out the image frequency and any nearby strong signals, but most domestic FM tuners do OK without multiple stages of filtering before the mixer. Excluding the BBC's very special case of a receiver "based at the site of a working VHF/FM transmitter", when/why are those extra stages of filtering needed? Is it to receive very weak distant broadcast transmissions?