Best (in phase) scenario you will get better signal. The other question is
whether you will exceed the power limit. You could, theoretically use two,
maximum legal power and end up with four times received signal instead of
the doubling you could get with one transmitter and two antennae in phase.
The next question (if you have a good supply of amplifiers and transmitters)
is how good signal you could get with, say, ten (10) transmitters.
Also, you should be able to get some benefits from using several receivers
at the same time too, at least at the higher (<144 MHz) as the received
signal is coherent but the noise is not.
Hans - N2JFS
In a message dated 8/14/2011 5:38:00 P.M. Eastern Daylight Time,
A hypothetical question:
> I have two antennas for the same band. The antennas might be same kind
> (eg. two dipoles, two yagis) or different (one dipole, one vertical).
> I transmit with two separate transmitters - one to one antenna - but
> modulate the transmitters simultaneousl*y *with same key or microphone.
> How does my signal-strength change on the other side in comparison if I
> used only one transmitter and one antenna? The antennas are not phased
> to each other and they might be quite apart from each other.
> I know that the advanced contest stations have one beam to eg. JA and
> one to Europe etc. But if they turned both antennas to JA, would the
> signal-strength go up?
> Jari, OH2BU
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