First question is, that when TV tuners are pressed into service, what is it
the comes digitised down the USB cable?

Is it chunks of spectrum downconverted in 6M5Hz chunks to suit the TV
channels, or
are they capable of finer tuning than that?

Secondly, do they have a good dynamic range?

Thirdly, when narrow filtering is being synthesized in the PC, is it IF
filtering (good)
or AF filtering (tends to ring for 20WPM +) ?


Fourthly, with the SDR and oscillator kits available from
www.sdr-kits.co.uk,
will the day shortly be here when all _REAL_ radio amateurs will be eqipped
with
a speccy-plus-tracking-generator at a fraction of the cost of traditional
professional
models? (But not talking of the £200+ hidden cost of the PC to drive it)