[RFI] Cognitive Networked RF

[Roger (K8RI)]

Without knowing just how they are establishing a link, it certainly 
sounds like at least a form of Automatic Link Establishment (ALE)

73

Roger (K8RI)


On 9/5/2015 5:19 PM, qrv at kd4e.com wrote:
> Is this partially what ALE attempts?
>
> David KD4E
>
>> This isn't really new, except for the sophistication. Hams have used
>> similar, but less precise approaches for a number of years.
>>
>> Remember LightSquared and their frequency grab up in the satellite
>> frequencies, but this is in the HF bands.  Fortunately the HF bands are
>> allocated via an international treaty and I hear no threat to the HF
>> bands... so far.
>>
>> My point is, that Regardless of where we operate, our access to those
>> bands is not guaranteed.  I believe, were it not for the ARRL's efforts,
>> (continuing efforts) we would not enjoy the privileges we currently
>> enjoy and could easily lose what we have. Our access and maintaining
>> that access to the ham bands is fragile and without someone with the
>> expertise and ability to justify our existence to agencies and
>> politicians we could easily lose those privileges.
>>
>> If commercial interests have a strong desire for areas of the spectrum,
>> they are willing to spend millions, or more and employ lobbyists to hawk
>> those interests via various means.  The ARRL maintains an A-political
>> approach, but the agencies that have control over our interests do not,
>> nor do those businesses in competition for spectrum.
>>
>> Amateurs can do the same auto frequency selection and with prediction,
>> although with apparently less complexity. Multiple receivers and
>> antennas allow automatic selection of the best antenna, best height, or
>> even best band.  Adding the reverse beacon network results and forecasts
>> sounds as if it takes us pretty close in practice to what they are
>> doing.  The RBN shows us what's happening now. How it's trending, the
>> time of day, and solar activity add the predictive aspect.  The only
>> real unknown is how much weight to give each input, how far ahead we
>> wish to predict (minutes, hours, days, etc),  and the percent certainty
>> we require.  For contesters and DXers these abilities can easily
>> determine their standings.  For long haul  health and welfare traffic
>> with our harmonically related bands, this could actually come down to
>> life and death situations.
>>
>> The algorithms may be different, but I doubt they are complicated, and
>> their inputs may be different, but it sounds to me that implementing
>> something similar is well within the reach of many contest stations, or
>> even DXers.  The most difficult part would be determining the
>> uncertainty permissible.
>>
>> 73
>>
>> Roger (K8RI)
>
>


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