Topband: electromagnetic effects on space weather

2017-05-19 Thread N7DF via Topband
I wonder how much effect contest weekends have
https://arxiv.org/pdf/1611.03390.pdf
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Re: Topband: Top Band and JT65

2017-05-19 Thread DXer

>>>To me, just not the challenge of dxing mostly cw and ssb.

Fair enough. There is absolutely nothing wrong with that.

Another angle. I find JT65 to be a very relaxing mode. Which other mode 
allows one to read and write emails, go get a coffee, answer 'nature's 
call', etc. while making contacts? Timing is important, but doable. :^)


73 de Vince, VA3VF
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Re: Topband: Top Band and JT65

2017-05-19 Thread DXer
>>10 Watts is considered high power on the digital modes. Is using 1000 
>>Watts on 160m (+20dB) and 250Hz receive filters (+10dB) on both ends 
>>of a CW QSO more challenging than 10W on JT65 on the same link? 
>>Perhaps not.


JT modes are weak signal modes, not necessarily low power/QRP modes. The 
power needed on 160 will likely be higher than on 20, for example.

The benefit is that, mode by mode, JT can do more with less power.

The old FCC rule/reccomendation about using only the power required to 
complete de QSO still applies. :^)


73 de Vince, VA3VF
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Re: Topband: Top Band and JT65

2017-05-19 Thread DXer

JC,

>>I just don't like JT modes.

I'm way behind reading messages. Please disregard my last one. As we say 
in our mother tongue 'gosto nao se discute'. :^))


73 de Vince, VA3VF
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Re: Topband: Top Band and JT65

2017-05-19 Thread DXer

JC,

>>The digital mode is a choice, only a choice to avoid the hard work to 
>>enjoy a DX on 160m.


Amateur radio is basically about RF, not modes. Modes, beginning with 
code, were and are being added as technology permits.


73 de Vince, VA3VF
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Re: Topband: Top Band and JT65

2017-05-19 Thread DXer
>>>And MY 2 cents...the ONLY criteria for ANY ARRL (or other) awards is 
>>>very simple: If both stations AGREE they have made a QSO, then they 
>>>DID have a valid QSO...regardless how/when/mode/assist/etc is 
>>>used.There is no third-party judge required or invited...


You didn't really mean this, did you?

73 de Vince, VA3VF
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Re: Topband: Top Band and JT65

2017-05-19 Thread DXer

>>> WSJT-X 1.7.0

There is JTDX, based on WSJT-X, but with some additional tweaks for the 
HF user.


73 de Vince, VA3VF
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Re: Topband: Top Band and JT65

2017-05-19 Thread DXer
>>My question was about the feeling of doing a CW and a JT65 QSo on 
>>topband. I worked a new one on JT65 and really didn´t feel the 
>>excitement working it as I did with any new one on CW


And my question is about the feeling of doing a JT65 QSO, or nothing, on 
topband. :^)


73 de Vince, VA3VF
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Re: Topband: Top Band and JT65

2017-05-19 Thread DXer
>>>Maybe JT65 is too young to have good statistics, but how many DXCC 
>>>entities have ever been activated on JT65 on 160M?


It'll never reach the levels of SSB/CW/RTTY, if that's what you are 
getting to, for the simple reason that DXpeditions to rare places would 
be crazy to spend precious time on a 6 minutes per QSO mode, assuming 
there is no repeat.


73 de Vince, VA3VF
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Re: Topband: Top Band and JT65

2017-05-19 Thread DXer

I did JT65 on 160, but really what´s the challenge?

Is amazing when you did a CW qso, switching between RX antennas, filters
and radio adjustments to pull out a callsign

I don´t know what people than been on topband for decades feel about that

73.
Jorge
CX6VM/CW5W

=
Jorge,

Is not a question of 'challenge', it's a question of being able to 
operate on 160, with a station that won't cut even on CW. The same 
applies to VHF/UHF when it comes to JT modes.


Let's not forget also that many aspiring topbanders do not operate on CW 
-not trying to create a CW yes/no thread - and CW, before the JT modes, 
was the best mode for topband.


And finally, people with hearing problems.

73 de Vince, VA3VF
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Topband: Top Band and JT65

2017-05-19 Thread DXer
>>>I cannot understand why JT9 is used so little on 160 thru 20. JT65 
>>>is a VHF mode.


Not really, there are different 'flavours' of JT65, on HF it's JT65A.

As for JT9, there reason is that JT65-HF, and its derivatives, such as 
the one maintained by HB9HQX, is still used by a substantial number of 
people. JT65-HF does not support JT9.


73 de Vince, VA3VF
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