[Skimmertalk] Skimmer Server & CQWW: one year late

[H Lawrence Serra]

... and 14.099 is not high enough a CW segment for 20m. In ARRL DX and SS CW, I have heard guys CQing as high as 14.120.

73, Larry N6NC

--- On Tue, 12/7/10, David Robbins <k1ttt at verizon.net> wrote:

From: David Robbins <k1ttt at verizon.net>
Subject: Re: [Skimmertalk] Skimmer Server & CQWW: one year late
To: n4zr at contesting.com
Cc: skimmertalk at contesting.com
Date: Tuesday, December 7, 2010, 5:04 AM


1870 is not high enough on 160m during contests, in arrl 160 there were regular spots up to 1885, in cqww there will often be cw above 1900.

on 6m cw should go at least to 50125, many dx stations do cw on
 50110-50120, stateside will sometimes cq on 50125 during non-contest times.

i had at least 20 users on my skimmer in cqww when i was running it in agressive mode and not getting many spots, i changed to normal and a bunch of them ended up disconnected, i think there were at most 15 or so after that.

Dec 7, 2010 06:15:02 AM, n4zr at contesting.com wrote:

Very interesting report, Wes. We're all learning as we go along, but 
things are, indeed, much better.

The RBN logged about 885,000 spots on Sunday, an average of a little 
over 10/second. Saturday sees to have been a little lower, around 
800,000. We successfully served a peak of 147 concurrent users on the 
single RBN Telnet node at telnet.reversebeacon.net 7000. Logs indicate a 
few times that the node went down and re-started automatically. It looks 
like most users were
 using clients with auto-reconnect capability.

In addition, I'm sure that VE7CC-1 and maybe some other CC Cluster nodes 
were serving spots from RBN-connected Skimmers.

It would be interesting to see how many people were connecting to 
individual Skimmers. As one of the most reliable Skimmers on the RBN, 
I'm not surprised Wes got such a large number of direct connections.

73, Pete N4ZR

The World Contest Station Database, updated daily atwww.conteststations.com
The Reverse Beacon Network athttp://reversebeacon.net, blog at reversebeacon.blogspot.com,
spots at telnet.reversebeacon.net, port 7000


On 11/28/2010 9:37 PM, Wes Cosand wrote:
> What a difference a year makes!
>
> First an apology. Of all the nights for Verizon to turn off the fiber optic
> line to the house for two hours, Saturday night was the wrong night.
 Of
> course they changed the IP address so users who were using a numerical
> address instead of cw.wz7i.com were unable to reconnect. I apologize.
>
> I think I have found a computer system appropriate for running SkimServer.
> I used an Intel Core 2 Quad Q8300 and at times it ran over 2200 decoders
> without getting above 80% CPU utilization. I never saw less than 100%
> decoding. XP Pro was the OS and the Skimmer Server version was 1.2.0.110.
>
> I was unaware of the CWSegment lines in the SkimSrv.ini file. But Saturday
> morning I looked at a bandmap and saw a hole between 7.035 and 7.045 and
> realized something was wrong. I modified the default CWSegment lines and
> broadened the segments to accommodate contesters outside the strict CW
> portions of the bands. Alex suggests having two or three versions of the
> CWSegment line and then commenting out the undesired
 lines so one can
> rapidly modify the file. My current version of this area of the file is
> below but I cant guarantee it is optimal. I am still learning. I would be
> very interested in suggestions from contesters about appropriate band
> segments.
> ;DX CW Segments
> CwSegments=1800000-1870000,3500000-3570000,7000000-7070000,10100000-10130000,14000000-14070000,18068000-18095000,21000000-21070000,24890000-24920000,28000000-28070000,50000000-50100000
> ;Contest CW Segments
> ;CwSegments=1800000-1870000,3500000-3600000,7000000-7100000,10100000-10130000,14000000-14125000,18068000-18095000,21000000-21120000,24890000-24920000,28000000-28120000,50000000-50100000
>
> Of course, there must not be any carriage returns in these lines. If you
> bring up your SkimSrv.ini file in Notepad and turn off Word Wrap, the
> command should be one long line. The above contest segments line
 assumes
> you will run 192 kHz bandwidth.
>
> With the telnet spot filtering set to Aggressive, and having the CWSegment
> line set inappropriately for the first 15 hours or so, the system generated
> 63,000 spots from a HyGain HyTower Junior vertical. This is not as many as
> some of the systems.
>
> I want to express my appreciation to those cluster owners who made these
> spots available to contesters without them having to connect directly to my
> computer. I dont have a good feel for how much telnet connections cost in
> cpu time or network traffic  I wouldnt think it very much. However I
> averaged 10 connections and it seemed to have an impact, at least on the
> house network.
>
> Hopefully during this contest I corrected a couple of stupid errors and next
> contest I will be better prepared. Things went much better than last
 year!
>
>
> I welcome suggestions that would improve the data. I hope folk had fun
>
> Wes, WZ7I
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>
>
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