[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
Re: [Discuss-gnuradio] Decoding 2FSK Compensating for carrier jitter/ske
From: |
Cinaed Simson |
Subject: |
Re: [Discuss-gnuradio] Decoding 2FSK Compensating for carrier jitter/skewing (CFO) |
Date: |
Fri, 14 Jul 2017 15:58:43 -0700 |
User-agent: |
Mozilla/5.0 (X11; Linux i686; rv:52.0) Gecko/20100101 Thunderbird/52.2.1 |
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
>
>
>
- Re: [Discuss-gnuradio] Decoding 2FSK Compensating for carrier jitter/skewing (CFO), (continued)
Re: [Discuss-gnuradio] Decoding 2FSK Compensating for carrier jitter/skewing (CFO), Andy Walls, 2017/07/14
- Re: [Discuss-gnuradio] Decoding 2FSK Compensating for carrier jitter/skewing (CFO),
Cinaed Simson <=