On Dec 31, 8:05*am, Kenneth Scharf wrote:
K7ITM wrote:
....
One of the obvious problems is
that such an amplifier may have the potential to blow up things
following it...

ONLY IF the amplifier is allowed to become unstable. *It can't generate
any more power output than the input signal multiplied by the power
gain, so unless a KW station a few hundred feet away fires up you're safe..
....

Well...that depends on what the following stages can tolerate, the
gain of the amplifier, and the signal environment you're in. I know
that European AM broadcast stations in the 7MHz band can put signals
into the East Coast of the US that deliver 0dBm to the output of some
hams antennas, and from what I hear, listeners at many locations in
Europe have to deal with even larger signals. When the phases of such
signals all line up, the peak voltage can be substantial. It's at
least something to beware of.

Do you happen to have any more definite references to preamps with
very high TOI? I've had trouble finding anything better than about
+56dBm in commercial amplifiers that don't also draw several watts (or
more!) quiescent. What I'm looking for needs to be broadband,
500kHz--30MHz.

Cheers,
Tom