Getting quite a strong visible signal from you
On 2 December 2015 at 21:48, <[email protected]> wrote:
> I was going to do it every hour, but didn't want to keep anyone
> waiting.
>
> Good luck Andy
>
> Joe
>
>
> On Wed, 2 Dec 2015, Andy Talbot wrote:
>
>> Every half hour ???
>>
>> Andy
>>
>>
>> On 2 December 2015 at 21:00, <[email protected]> wrote:
>>>
>>> Hi Paul,
>>>
>>> That's very helpful. The oscillator needs some work to improve
>>> our chances.
>>>
>>> In the mean time, how about a longer message, more power and shorter
>>> symbols. 9K19A 1 Second symbols 25 characters 500 watts. 2100 UTC.
>>>
>>> 73
>>> Joe
>>>
>>> On Wed, 2 Dec 2015, Paul Nicholson wrote:
>>>
>>>>
>>>> Given a 3 hour VO/VK window,
>>>>
>>>>
>>>>
>>>>
>>>> http://abelian.org/ebnaut/calc.php?sndb=15&snbws=92e-6&code=16K21&sp=10&L=1&nc=5&submit=1
>>>>
>>>> shows you need to reach 15dB S/N in 92uHz to get a 5 char message
>>>> across, and
>>>>
>>>>
>>>>
>>>>
>>>> http://abelian.org/ebnaut/calc.php?sndb=12.5&snbws=92e-6&code=16K21&sp=12.5&L=1&nc=3&submit=1
>>>>
>>>> 12.5dB for a 3 char message.
>>>>
>>>> This assumes the path remains stable for 3 hours which is probably
>>>> optimistic.
>>>>
>>>> A 2 char message with 14 second symbols needs S/N 11dB in 92uHz.
>>>>
>>>> Everything hinges on that carrier measurement.
>>>>
>>>> Markus wrote:
>>>>
>>>>> Fewer and weaker decodes than the night before:
>>>>
>>>>
>>>>
>>>> Here it was better than the previous night,
>>>>
>>>> VO1NA 2015-12-01/02 8K19A 2S 5C
>>>>
>>>> start Eb/N0 BER rank
>>>>
>>>> 19:00 1.0 35.2% 684
>>>> 20:00 3.4 30.7% 0
>>>> 20:30 13.0 6.5% 0
>>>> 21:00 10.4 12.9% 0
>>>> 21:30 11.4 10.4% 0
>>>> 22:00 9.2 16.2% 0
>>>> 22:30 11.7 9.6% 0
>>>> 23:00 14.0 4.3% 0
>>>> 23:30 12.6 7.2% 0
>>>> 00:00 6.5 23.6% 0
>>>> 00:30 10.5 12.7% 0
>>>> 01:00 0.2 36.3% 6893
>>>> 01:30 8.3 18.8% 0
>>>> 02:00 4.5 28.3% 0
>>>> 02:30 -1.0 38.1% 47236
>>>> 05:00 4.2 29.1% 0
>>>> 05:30 11.0 11.3% 0
>>>> 06:00 4.5 28.3% 0
>>>> 07:00 7.2 21.7% 0
>>>> 08:00 7.2 21.7% 0
>>>> 08:30 6.3 24.0% 0
>>>> 09:00 0.2 36.3% 84968
>>>>
>>>> --
>>>> Paul Nicholson
>>>> --
>>>>
>>>>
>>>
>>
>>
>
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