[TowerTalk] 4-Square Configurations

[Maurizio Panicara]

It depends by the coupling, but the difference is generally big (a lot of
dbs) because when a signal is radiated becomes an electromagnetical field.
Opposite to a transmission line or very tightly inductively coupled circuits
(were nearly all the energy is confined), only a small part of the radiated
energy is picked up by a receiving antenna that crosses the field.
If there was no difference between lines and electromagnetical waves we
could easily transfer big amounts of energy without wires, what unluckyly is
not so easy to obtain.

73,
Mauri I4JMY


----- Original Message -----
From: <K3BU@aol.com>
To: <towertalk@contesting.com>
Sent: Tuesday, August 15, 2000 1:25 AM
Subject: Re: [TowerTalk] 4-Square Configurations



> >  More commonly, the "remoted" IMD distortion occurs in amplifiers
connected
> >  to multiplexed systems (single antenna for more transmitters) when the
> >  filtering between multiplexer ports is insufficient.
> >
>
> What's the difference between amplifiers with insufficient port filtering
and
> through antennas coupling to each other?  Not much.
>
> Yuri, S561C
>



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