Am or fm transmitter

[Mike Watterson]

Then what power o/p?  For me there is little point in building a TX that doesnt cover the house.  For this valve designs do this easier.  I built a Mate by Peter Lankshear years ago and with 3 ft of wire chucked out the back it does (just about).  Solid state  TX are around but as I understand it need more fiddly aerial arrangements to give house coverage.

Not true.