[Elecraft] FSK power

[Jack Smith]

  If the RTTY demodulator is of the FM type, i.e., a limiter followed by 
a discriminator (or, more likely these days, the software version of a 
limiter and discriminator) 3 dB difference between two signals could 
well cause the stronger signal to capture the limiter and suppress the 
weaker signal.

Exactly what happens with some of the more exotic DSP-based demodulation 
algorithms when the input is two signals differing by 3 dB but on the 
same frequency and with asynchronous data is a more difficult question.

Jack


On 9/23/2010 8:15 PM, Wes Stewart wrote:
> Well, you know what they say about opinions.
>
> If you're jabbering away with some locals across town they might never know the difference. But three dB can make a difference, especially on RTTY and in contests.
>
> Try telling a contester that the Kilobucks he just spent to stack another Yagi on his tower was a waste of money.
>
> --- On Thu, 9/23/10, Ray Sills<raysills at comcast.net>  wrote:
>
>
>> The difference in power between 50
>> watts and 100 watts is essentially 
>> insignificant.  If you can't work 'em at 50 watts with
>> the antenna 
>> you have... 100 watts ain't gonna make the
>> difference.  Period.   500 
>> watts... 1KW.. OK.. maybe that'll help.
>>
>> Just because the rig can "take it"... the extra power and
>> dissipated 
>> heat is just wasted.
>>
>> My opinion.
>>
>> 73 de Ray
>> K2ULR
>> FN20kg
>> Warrington, PA
>
>
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