[BC] Freq agile AM transmitters

RichardBJohnson@comcast.net RichardBJohnson
Tue Apr 24 18:48:11 CDT 2007


No. You will be going through your usual antenna coupler. It will 
provide sufficent harmonic suppression,
i.e., 43 + 10 log (power in watts), especially considering your 
harmonics will already be 40 dB down.
--
Cheers,
Richard B. Johnson


  -------------- Original message ----------------------
From: WFIFeng at aol.com
 >
 > In a message dated 04/24/2007 12:19:41 PM Eastern Daylight Time,
 > RichardBJohnson at comcast.net writes:
 >
 > > They exist. Try
 > >  http://www.kandelelectronics.com/manufacturers/582/  (Amplifier
 > >  Research). You can use
 > >  any frequency synthesized signal generator with an external AM
 > >  modulation input for the signal source. When choosing power, remember
 > >  that 1 kW is really 4 kW peak, 5 kW if you want 125% modulation.
 >
 > Cool... but those are amplififers with ridiculous frequency responses! 10Khz
 > to 100Mhz? Wow! I'm sure the prices for those units would be several times
 > that of a sub-Kw rack-mountable MW box!
 >
 > You'd best make absolutely sure your input is absolutely pure... and there's
 > no chance of any feedback, or you'll be (literally) filling the 
spectrum from
 > audio up thru VHF!
 >



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