amdx wrote in :

One of us is confused.
Do you want a FM transmitter or an amplifier.
The FM transmitter will transmit a frequency that your FM receiver will
receive, but you need to feed in a source of audio.


That could be you. Through several posts I mentioned enough detail to
cover all bases, but to summarise:

An antenna several tens of feet away is picking up good signals, but wired
connections to small portable radios often moved between rooms are
inconvenient (even dangerous obstacles if lying around in hallways, over
furniture, etc).

A small FM aerial amplifier built around a MAR-6 IC works to boost the signal
for direct connection, but can it also be used to drive a 1/4-wave dipole for
the immediate locality? There's little doubt that it is very low power,
likely not able to send enough RF out to justifiably annoy anyone (especially
given the UK legal allowance of it now), and almost certainly not enough to
feed back to the external aerial given how much RF attenuation exists between
inside and outside as it is. Anyb excess can be reduced, this is not the
problem, the problem is getting enough in the first place.

So the question is: can the MAR-6 based aerial amp drive a dipole with a
similar power to that had from these new microtransmitters? It's going to see
a similar impedance for that intended, so whatever impediment there may be,
impedance doesn't seem likely to be a problem.