Re: [Discuss-gnuradio] Decoding 2FSK Compensating for carrier jitter/skewing (CFO)

[Cinaed Simson]

On 07/14/2017 07:13 AM, Andy Walls wrote:
> From:         Cinaed Simson
> Date:         Fri, 14 Jul 2017 00:33:27 -0700
>>> On 07/12/2017 03:56 AM, HLL wrote:
> [snip]
>>>
>>> The wavelength for 450 is 1.5 meters. I really don't know where the
>>> boundary is between near field and far field - but I would guess far
>>> field the other side of a full wave length.
>>
>> Opps - Andy Walls I had the numbers upside down - should have checked
>> the units.
>>
>> In any case, the wave length is 2/3 of meter and not 1.5 meters.
> 
> I always mentally check against the data point: 300 MHz => 1 meter
> (since c ~= 300 Mm/s).  Above that should be less than 1m; below that
> should be greater than 1m.
> 
> [snip]
> 
> 
>> But then power is
>> 116 dBm - you could probably use a paper clip soldered into a SMA
>> connector :).
> 
> 30 dBm = 1 W = 0 dBW.  IIRC.
> 
> 116 dBm = 86 dBW = 10^(8.6) W = 398 MW !!!
> 
> That's the sort of power that is used for time machines in
> science-fiction movies.  You might want to check that number. :)

Opps again - I meant 116 mW. I'm blaming these errors on dog.
> 
> 
> Regards,
> Andy
> 
> 
>