[BC] Freq agile AM transmitters
RichardBJohnson@comcast.net
RichardBJohnson
Tue Apr 24 18:54:42 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!
>
More information about the Broadcast
mailing list