Jerry Martes wrote:

"Tam/WB2TT" wrote in message
...

"gwhite" wrote in message
...

Richard Clark wrote:

On Wed, 23 Feb 2005 19:08:20 GMT, gwhite wrote:


RF transmitters are not ....

Sorry OM,

This was all nonsense.

Nice articulation. I don't know who OM is, but RF transmitter power amps
are
not "impedance matched." Neither are audio power amps for that matter.

My stereo amp has a spec on output impedance. As I recall, it was around
0.16 Ohms. Intended load is 4 - 16 Ohms.

Tam


Tam

An audio amplifier can have an improved capability of minimizing a
speaker's deviation from its desired displacement if it has a low output
impedance. That is, the speaker's cone tends to swing past its desired
displacement when its terminals are loaded to a high impedance.

Jerry

Correct - in the case of an audio amplifier damping factor is critical
to accurate reproduction of transients. In an RF amp, it is normally
not required or desired.

tom
K0TAR