[AMRadio] AM Transmitter Advice??


John E. Coleman (ARS WA5BXO) wa5bxo2005 at pctechref.com
Fri Feb 17 09:24:39 EST 2006


Hi Jim,
	
My understanding was.
Under the old rules stage or stages, that provide output to the antenna,
total power should not exceed 1000 watts DC input.  This includes the sum of
the driver and final in the case of GG output circuit.
I think that rule was tested.

John, WA5BXO

-----Original Message-----
From: amradio-bounces at mailman.qth.net
[mailto:amradio-bounces at mailman.qth.net] On Behalf Of Jim Candela
Sent: Friday, February 17, 2006 6:29 AM
To: Discussion of AM Radio
Subject: RE: [AMRadio] AM Transmitter Advice??



Hi All,

There was
an old W6SAI construction project about this (single
304tl GG amp), and I recall that the setup in class C
could run 1 kw dc input with over 1 kw rf output
because of the low gain, and massive amount of
feedthrough power from the exciter that finds it's way
to the output. This was a way around the FCC power
rules of the day.

Regards,
Jim
WD5JKO

--- Donald Chester <k4kyv at hotmail.com> wrote:

> >Assuming one is going to build a linear, and so
> putting aside other issues
> >such as linear vs plate modulation, why do you
> think it makes a difference
> >what tube is used? Are you referring to running a
> linear at greater than
> >legal limit?.
> 
> Well, go ahead and try building a legal limit linear
> that runs a pair of 
> 807's in the final.
> 
>
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