For people like me in the UK ,after march 2012, when they switch off all
analogue TV transmissions. The following set top boxes,PVR etc apparently
have modulated UHF for continued use of an analogue TV , without wasting
the SCART input.

I can personally vouch for the Thomson DTI2300, the others are googles. Can
anyone add to the list ?

Commtel SRT5885
Daewoo Setpal DS608
Daewoo SV900 VCR
Hauppauge DEC1100
Hauppauge DEC2000
Humax DV-1000T - DVD
Humax F2-Fox
Humax MGTU1
Humax PVR-8000 HDD recorder
Icecrypt T5000 Freeview Receiver
Inverto IDL-7000 80Gb PVR
Labgear LAB DTT100
Nokia Mediamaster 121
Nokia Mediamaster 221
Pace DTR210T recorder
Panasonic TUCT20
Philips DTR100
Pioneer DBR-TF100GB
Sagem ITD60
SEG CDST900 Freeview
Thomson DTI-2300 Freeview receiver box (modulator programmable ch 21 to
above ch54, this and all other data, including last used station, retained
if switched off rudely at the mains )
Thomson DTI-2305
Thomson DTI 6300-16
TVonics MFR-200 Freeview box (very compact, no scart at all)