If he's in the US there is an outfit that advertises in
Nuts & Volts regularly that sells a little legal transmitter
for <$100 I believe, can't remember the name off the top of
my head though.  By the time he does it and gets it right he
should have bought one.  I've seen it in operation (a friend
has one) and it's pretty good.  Has about 1000 foot range.
(I think that's about max for the legal non-licensed power
level.
Alan


Peter L. Peres wrote:
>
> On Tue, 3 Nov 1998, Dan Larson wrote:
>
> > Steal a cheap modulator from an old video game and amplify the output of tha
t,
> > perhaps?
>
> Nonono. Please no. Cheap modulators do not suppress the sideband and
> amplifying them is a proven recipe for interference generation in the
> neighbourhood.
>
> Peter