[AMRadio] Dentron Clipperton on am?..

[Geoff Edmonson]

On 04/10/2011 08:13 PM, Ron Youvan wrote:
>
>     I am guessing that two 160T's (573Bs) can output 1.5 kW am (plate) modulated, I know much less
> about linear amplifiers.  Remember we (USA) are only allowed 375 Watts unmodulated carrier as our
> maximum.

Actually, the max output is 1500w PEP.  There is -no- 'maximum' carrier 
level for AM operation.  The only power limitation is 1500w PEP output.  
This means, you could, in theory, reverse the audio phase on a 
microphone, or reverse the plate caps on the modulator, whatever.. run 
the thing up to 1500w PEP and maybe run 500w of carrier.

If you've got a reasonably well designed rig, that has more than enough 
modulator for the amount of plate carrier capacity and you've followed 
the audio phase throughout the audio chain, with a natural asymmetrical 
voice, you could see 1500w PEP output with as little as 250W of carrier, 
and not be over modulated (negative peaks exceeding the base line of the 
wave-form).

it's a myth that 375w is a 'magic number' for the maximum carrier of an 
amateur radio AM station.
The rule states 1500w PEP output, regardless of mode.

73 = Best Regards,
-Geoff/W5OMR