[pskmail] Re: New test server available for testing
- From: John Douyere <vk2eta@xxxxxxxxx>
- To: pskmail@xxxxxxxxxxxxx
- Date: Sun, 20 Dec 2009 21:17:38 +1100
Hi Rein.
Tried the new sever today ad it is much improved on the previous
version: connected in PSK125R then tried regularly to switch to
PSK250R but with enough time in between that the session was not a
mess and did download the 4KB web page I needed.
Unfortunately I could not try other combination, but it is working
well. Great work Rein.
I may be jumping the gun there but today's exchanges made me long for
an asymmetric mode exchange: fast download and robust status replies
because the QRM/senstivity is rarely symetrical. I could copy the
server at PSK250R speed well, but it could copy me at PSK125R speed
max.
The PSK125R mode performed well in NVIS conditions: 120KM, 80M daytime.
So, pretty happy with the whole system right now. Just got one
unexpected disconnect.Will check the log tomorrow.
73s,
John
On Sat, Dec 19, 2009 at 9:15 PM, Rein Couperus <rein@xxxxxxxxxxxx> wrote:
> The new robust pskmail server (0.9.29) is now ready for alpha testing.
> Together with the jpskmail-0.4 client and fldigi-3.13BG it builds a system
> which is extremely robust, and can be used under a broad range of band
> conditions.
>
> What is new?
>
> The server uses RSID technology to change modes. The client and server have
> been changed to handle RSID in such a way that they work together efficiently.
> Transmission modes are changed automatically depending on channel quality in
> such a way that maximum speed is combined with optimum robustness. This is
> achieved by a mode switcher which constantly monitors the link, and changes
> to a more robust mode when the channel stalls, either because of qrm,qrn or
> qsb. The server offers various mode profiles which can be set from the
> client. Each profile has 3 modes, and the server will automatically switch
> between them, and also adjust the block length by looking at the number of
> errors on the link.
>
> The following 9 profiles are available:
> 9: PSK500 PSK500R PSKR125
> 8: PSK500 PSK250R PSKR125
> 7: PSK500 MFSK32 PSKR125
> 6: PSK500 THOR22 PSKR125
> 5: PSK250 PSK250R PSKR125
> 4: PSK500R MFSK32 PSKR125
> 3: PSK500R THOR22 PSKR125
> 2: PSK250R PSK125R PSKR125
> 1: MFSK32 MFSK16 PSKR125
> 0: Use server default
> The client can choose the profile by setting the Blocklength variable through
> the preferences dialog.
> This mode table is preliminary, lot of testing will be needed to fix the most
> effective combinations. The ones we use now are the ones I prefer :)
>
> The server can be connected in any mode (PSKR125, THOR22, PSK500... etc.)
>
> The new test software is available at
> http://hermes.esrac.ele.tue.nl/pskmail/alpha
>
> Fldigi and client packages are available for windows and linux.
>
> At this moment only PI4TUE is running the new test server, but i hope there
> will be more soon. Using the new server I can now work PI4TUE with 1 Watts
> (20 km, 18105 kHz), on 30 meters I need 10 Watts.
>
> I hope some of you can do some tersting, and let me know of any quirks....
>
> 73,
>
> Rein PA0R
>
> --
> http://pa0r.blogspirit.com
>
>
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