[AMRadio] Valiant carrier

Sat Jun 18 08:30:41 EDT 2011

Just for the NOTE: at present I have 3 Broadcast Rigs.
 Gates BC-1H, RCA BTA 500R  and BTA 1R1
 I had 5 before my house fire( fire noting to do with Radio had to do with Squirrels eating wires in the attic) Ran into an Inverted L  with a full 120 radials in the ground(I am a broadcast engineer) (wink)

--- On Sat, 6/18/11, John Tate <johndtate at post.com> wrote:

> From: John Tate <johndtate at post.com>
> Subject: Re: [AMRadio] Valiant carrier
> To: "Discussion of AM Radio in the Amateur Service" <amradio at mailman.qth.net>
> Date: Saturday, June 18, 2011, 2:24 AM
> This discussion seems to come around
> the AM circles every few months. Running 375 watts of
> carrier AT 100% modulation (assuming no sagging of power
> supplies with modulation, an excellent point brought up
> earlier) yeilds 1.5K pep. What about 130% modulation like
> many AM operators run? If you run this then you have to run
> LESS tha 375 watts carrier to keep it legal. What if someone
> runs only 75% modulation? They can run more than 375 watts
> of carrier and still remain legal if the peak to peak value
> stays 1500 or less.
> ----- Original Message -----
> From: Neal Newman
> Sent: 06/17/11 10:22 PM
> To: Discussion of AM Radio in the Amateur Service
> Subject: Re: [AMRadio] Valiant carrier
> 
>  Operating AM that would be about 375 watts Carrier
> measured at the output with a Bird watt meter. Maximum not
> sure If the the Guys operating old 1 Kw Broadcast
> transmitters Run at full Power or Reduce power. But Ill bet
> they Run the Full 1kw Carrier --- On Fri, 6/17/11, Geoff
> Edmonson <w5omr at att.net>
> wrote: > From: Geoff Edmonson <w5omr at att.net>
> > Subject: Re: [AMRadio] Valiant carrier > To:
> "Discussion of AM Radio in the Amateur Service" <amradio at mailman.qth.net>
> > Date: Friday, June 17, 2011, 10:07 PM > On
> 06/17/2011 10:49 AM, Ron Youvan > wrote: > > Geoff
> W5OMR Edmonson wrote: > > > >> does the power
> limitation ruling (1500w PEP vs 1kW > DC Input) specify
> > >> where the output is measured? > >>
> (ie: at final stage output, or at the antenna) > >
> From the horse's mouth: (CFR 47) > > Part 97 : Sec.
> 97.313 Transmitter power standards > > (a) An amateur
> station must use the minimum > transmitter power
> necessary > > to carry out the desired communications.
> > > > > (b) No statio
>  n may transmit with a transmitter power > exceeding 1.5
> kW PEP. > > Measured where? At the transmitter output
> or at the > antenna input? > THAT was the Question.
> > > >
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