Re: Psk31 20W for 2500km "emergency"

[Simon <sim...@gm...>]

So far, fldigi work fine on desk top test.

I asked that 2500km question, before moving on to next phase involving
hardware, firmware development and field test which understandably, are
quite some investment in time, money, sweat and hopefully no tear.

73

Simon

On Friday, October 26, 2018, Simon <sim...@gm...> wrote:

> I am NO HF ham as i did not passed morse code test. No HF experience.
>
> Can psk31 at 20W to 30W HF works comfortably over 2500km?  Any time, day,
> night, summer and winter.
>
> As it is machine to machine communication, if link occasionally marginally
> closed for a few minutes and then auto reopen, machine auto retry is ok.
>
> Yes, it depends on many factors and only field test can give "definitive"
> answer.
>
> But,  sure, i would like some community "consensus" that it is fairly
> likely achievable, before i put time and money into starting the project.
>
> If 2500km is "tight", it can be splitted into two systems of 1200km each.
> Or, whatever that works....
>
> Of course, HF frequency will be chosen depending on day, night, distance
> (nvis mode use lower freq at 500km or less).   Simple dipole antenna. Just
> wire on two pole, in "emergency", no massive yagi on tower allowed.  And at
> lowest worst sun spot condition as now.
>
> Many thanks
>
> 73
>
> Simon
>