So question is why does Frank do this? Was it requested by some individuals? Anyone who wants to follow the RBN spots can do so. I have yet to meet anyone sho says, "hey, this LPL software is a great feature," however, I've spoken with many who find it very annoying.

Barry W2UP

On 7/24/2013 08:20, Pete Smith N4ZR wrote:
I have been corresponding with Frank off and on for a couple of years about this. Here's an explanation of how hisspots are generated, from December 2011. The only change I know of since then is the addition of a "heard in [state]" comment earlier this year:

"Automated CW DX spots from W3LPL are produced by custom software that monitors the DX spots from the Reverse Beacon Network, a global network of CW Skimmers. There are no radios involved except at the approximately 50 CW Skimmers that originate the DX spots sent to the RBN.

Core to the software is a list of one thousand rare and semi-rare DX callsigns. Each callsign has an appended DX spotting rule that specifies the bands that should be spotted for that callsign and the re-spotting interval (typically one to three hours).

When a DX spot is received from the RBN, it is compared to the list of 1000 calls. If there is an exact match, the software then waits for a second RBN spot of the same exact callsign. If one or more of the spots originated from a CW Skimmer in the USA, the DX spot is sent to the DX Cluster network as specified by the DX spotting rule appended to that callsign. If neither RBN spot originated from a CW Skimmer in the USA, the software continues to search for an RBN spot for that exact callsign from a CW Skimmer in the USA. If within ten minutes it receives a DX spot for that exact callsign from a USA CW Skimmer a DX spot is sent to the DX cluster network, otherwise it times out and no spot is sent.

Most CW Skimmers use a Quicksilver QS1R SDR, covering seven ham bands simultaneously. My QS1R is fed by my transmit monoband phased arrays on 40 thru 6 meters, and by my Beverage antennas on 160 and 80 meters. Please send me an email whenever you see a bad callsign spotted by W3LPL. That always means there is a bad callsign in the list of 1000 calls! tks"

73, Pete N4ZR
Check out the Reverse Beacon Network at
http://reversebeacon.net,
blog at reversebeacon.blogspot.com.
For spots, please go to your favorite
ARC V6 or VE7CC DX cluster node.

On 7/24/2013 8:03 AM, Kurt Zimmerman wrote:
Thanks all for the info. I use DX4WIN and I can see how that could be a problem.

73;
Kurt -W2MW

Sent from my iPhone4

On Jul 23, 2013, at 7:33 PM, Barry <[email protected]> wrote:

Pete - I believe, until recently, they were from around the world, as the band and times made no sense for US stations - even for LPL antennas.

Kurt - You are missing something. Many of us keep DX4Win on in the background with an audio alert set for new band-countries. It's very annoying when these spots alert us to something that doesn't exist in our part of the world.

Barry W2UP

On 7/23/2013 15:55, Kurt Zimmerman wrote:
What is a skimmer? I've seen W3LPL spots and if I'm on the band and hear the DX station I work him.

Am I missing something?
73
Kurt - W2MW

Sent from my iPhone4

On Jul 23, 2013, at 5:41 PM, Pete Smith N4ZR <[email protected]> wrote:

Not quite right, Jim - they are from NA Skimmers only, and for several months now, the location where the station was heard has been appearing in the Comment field

73, Pete N4ZR
Check out the Reverse Beacon Network at
http://reversebeacon.net,
blog at reversebeacon.blogspot.com.
For spots, please go to your favorite
ARC V6 or VE7CC DX cluster node.

On 7/23/2013 4:51 PM, Jim Reisert AD1C wrote:
On Tue, Jul 23, 2013 at 11:57 AM, Andreas Junge N6NU wrote:

Use the VE7CC “CC user” cluster filtering tool. There is a switch to turn on/off Skimmer spots.
Actually, they do not come in as skimmer spots. CW Skimmer spots are
identified by -# at the end of the spotter callsign.  I have CW
Skimmer disabled, but still get the W3LPL spots.

W3LPL has such a great antenna farm, I can't hear his spots even when they
are from MD.
Spots arriving from W3LPL originate from CW skimmers all over the
world, not just in MD.

--
Jim Reisert AD1C, <[email protected]>, http://www.ad1c.us
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