<div dir="ltr"><div dir="ltr">Jack,<div>Please update me on 50.62 activity. (anywhere in the country), I just donated my old (unconverted) 100W mobile rigs to MMARSI.org</div><div>Im in too poor health to do anything anymore. But are the WashDC area 6m digis still up?</div><div>I may even have my mobile 6m rig in th eback of the car if I ever unloaded all the junk on top of it.</div><div><br></div><div>If there are stations, you have a good shot at MS as is. Just look at your receipts on Tuesday morning.</div><div>Bob</div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Fri, Nov 13, 2020 at 12:24 AM Jack Cochran <<a href="mailto:nokesradio@gmail.com">nokesradio@gmail.com</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div dir="auto">Looks like fun I'll be monitoring <div dir="auto"><br></div><div dir="auto">Remember us on 50.62 aprs we get openings all the time</div><div dir="auto"><br></div><div dir="auto"><a href="mailto:wc4j@wc4j.com" target="_blank">wc4j@wc4j.com</a></div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Thu, Nov 12, 2020, 11:56 PM <<a href="mailto:donovanf@erols.com" target="_blank">donovanf@erols.com</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div><div style="font-family:"times new roman","new york",times,serif;font-size:12pt;color:rgb(0,0,0)"><div style="color:rgb(0,0,0);font-weight:normal;font-style:normal;text-decoration:none;font-family:Helvetica,Arial,sans-serif;font-size:12pt">From Robert Bruninga, WB4APR <a href="mailto:bruninga@usna.edu" rel="noreferrer" target="_blank">bruninga@usna.edu</a><br>........<br><br>We are seeking Amsat operators with beams and high power on VHF to<br>participate in this coming Monday night's Leonids Meteor Shower APRS test.<br><br>So far, no one on the APRS list seems to have any power and beams to be a<br>transmitting station. If you have high power and a beam, please help us.<br>Here is the pitch:<br><br>With the Leonids Meteor shower coming up after Midnight next Monday (Tues<br>AM), maybe its time to have some fun with APRS again!<br><br>Last time we did this was 1998 and over 48 MS packets were seen over 500 to<br>600 miles on the APRS channel.. Here is the report:<br><a href="http://aprs.org/APRS-docs/LEONIDS.TXT" rel="noreferrer" target="_blank">http://aprs.org/APRS-docs/LEONIDS.TXT</a><br><br>THis year I propose not a free-for-all but just a few HIGH power stations<br>transmitting and everyone else in the country checks the next morning to<br>see what they copied.. Best TX stations are those with several<br>hundred watts and a beam. Even one such station would be a great test,<br>because on 144.39 we would have maybe 10,000 full time normal APRS stations<br>as receivers. In retirement, i dont have the power nor the beam<br><br>But it would go something like this. Up to 15 TX stations around the<br>country would TX a continuous keydown string of short packets for 15<br>seconds every minute. Xmission is on the 144.39 national APRS channel to<br>maximize the number of people that might copy one. Transmissions begin at<br>midnight local time and runs to 6 AM only to minimize any interference to<br>other operators. We all wake up the next morning to see what we got. Yes,<br>this will burn the local channel within about 20 miles of the TX station.<br>but since the packets have no path, they can only be heard in simplex range<br>of a transmitter and everyone is sleeping anyway.<br><br>But if a meteor happens, someone within about 400 to 600 miles is likely<br>capture it. Remember, the APRS channel load in most areas is only a packet<br>every 3 or 4 seconds and that gives everyone a receive window of 75% of the<br>total slots available. And even if the TX stations are not even<br>synchronized it doesnt matter because a given meteor path only exists for a<br>fraction of a second and only between two fixed 100 mile or so areas for<br>that instant.<br><br>The original APRSdos had Meteor Mode built in and did the timing and<br>transmissions. WIth a very short packet and short TXD a single key down<br>could transmit about 30 packets during each 15 second period.<br><br>Any high power TX volunteers?<br><br>Oh, here is the original page: <a href="http://aprs.org/meteors.html" rel="noreferrer" target="_blank">http://aprs.org/meteors.html</a><br>Look about 75% down the page for the map of that 2m experiment.<br><br>IGNORE the majority of that page. It was showing how an emergency response<br>station for example could go to an area of total devastation with all APRS<br>wiped out, and with enough power and persistence could likely get out an<br>emergency email message. This one time, test is completely different.<br><br>Bob, WB4APR <a href="mailto:bruninga@usna.edu" rel="noreferrer" target="_blank">bruninga@usna.edu</a><br></div><br></div></div>______________________________________________________________<br>
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