300 Watt AM Amp Plans?

[Meir WF2U]

Lin,

Now that's clear...

You'll have to throttle back the TX-1 output to around 25 to 30 W in  
order to produce a 300W carrier out of a 1.2 to 1.5 KW amplifier, as  
gain typically is around 10 dB or better (10X input).

73, Meir WF2U
Landrum, SC


Quoting Lin Robertson <digital-conjurers at ROADRUNNER.COM>:

> SRI, OM's,
>
> I meant 300W _carrier_.   Should have been clearer.  Thought the
> mention of  usage w/TX-1 would be enough.
>
> After thinking it all over, maybe I'll also look around for a
> HA-10...or some other "period amp" as a secondary thing until I can lay
> hands on an HA-10... ;)
>
> Thanks for all the input!
>
> 73 DE Lin/KJ6EF
>
> =================================================================
>
>
>
> At 08:38 AM 04/29/2008, you wrote:
>> Is the amplifier intended for 300 W unmodulated carrier or 300 W Peak
>> Envelope Power (PEP - carrier plus modulation)?
>>
>> If it's for 300 W carrier you need a 1200W amplifier, to accomodate
>> 100%modulation added to the 300W carrier and not exceed the amplifier
>> maximum PEP rating.
>> (for the legal limit of 1500W it breaks down as 375 W carrier + 100%
>> modulation).
>> For 300W PEP you don't need an amplifier for the TX-1. The 100W
>> carrier plus the modulation (provided the modulation is at or near
>> 100%)  make a total of 400W PEP.
>> Just to wrap it up, 300 W PEP output is made up from 75W carrier +   
>> modulation.
>>
>> 73, Meir WF2U
>> Landrum, SC
>
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