<p>Sure but it's a shared medium....as much as we would like to think we own it, we don't. It's proper to check if the channel is not in use. I highly suspect they did in fact do a local check up there and didn't hear anything. It's different when the QTH is at 35,000 ft. Then it's LOS to the entire NE. Either way....the probability of them choosing 450 or 440 AND running into a group of people on VHF is so astronomically low. Moreso that they only do this for 2 hours a year. And even crazier....we tracked it down to the source.....</p>
<p>All in all pretty low odds of any of this happening!</p>
<p>Certainly, the tone with which the students responsible were addressed was imho harsh...</p>
<p>Oh well...</p>
<div class="gmail_quote">On May 20, 2013 3:40 PM, "Rich" <<a href="mailto:t41@optonline.net">t41@optonline.net</a>> wrote:<br type="attribution"><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div dir="ltr">
<div dir="ltr">
<div style="font-size:12pt;font-family:'Calibri'">
<div>Sorry, but they WERE in the wrong. If you are going to transmit from a 100k
foot location, its incumbent upon YOU to make sure the frequency is clear. Also
Bobs note was not accusatory or nasty. I think we just leave it where it
is.</div>
<div> </div>
<div> </div>
<div style="font-style:normal;font-size:small;display:inline;text-decoration:none;font-family:'Calibri';font-weight:normal">
<div style="FONT:10pt tahoma">
<div> </div>
<div style="BACKGROUND:#f5f5f5">
<div><b>From:</b> <a title="john.foege@gmail.com" href="mailto:john.foege@gmail.com" target="_blank">John Foege</a> </div>
<div><b>Sent:</b> Monday, May 20, 2013 4:47 AM</div>
<div><b>To:</b> <a title="450@lists.vhfwiki.com" href="mailto:450@lists.vhfwiki.com" target="_blank">144.450 Mailing List</a> </div>
<div><b>Subject:</b> Re: [450] Fwd: Mystery QRM (2)</div></div></div>
<div> </div></div>
<div style="font-style:normal;font-size:small;display:inline;text-decoration:none;font-family:'Calibri';font-weight:normal">
<div dir="ltr">
<div>
<div>Bob,<br><br></div>I agree with Chris...these people certainly feel like
they just got repirmanded for doing absolutely nothing wrong.<br><br>I'd really
suggest sending a letter to everyone involved and telling them, that by no means
does this represent a problem, and that you are very happy that the students are
using HAM radio for backup telemetry data...<br><br></div>That you were suprised
how far they got out...<br><br>etc. etc....<br><br><br>We don't want to poo poo
people just because we managed to hear their +10,000 FT ASL transmitters
:P<br></div>
<div class="gmail_extra"><br><br>
<div class="gmail_quote">On Mon, May 20, 2013 at 5:10 AM, chris <span dir="ltr"><<a href="mailto:cralt@comcast.net" target="_blank">cralt@comcast.net</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="PADDING-LEFT:1ex;MARGIN:0px 0px 0px 0.8ex;BORDER-LEFT:#ccc 1px solid">
<div style="WORD-WRAP:break-word">
<div>Hopefully they are not discouraged from using ham radio for this stuff.
Maybe just suggest that they try shifting to a different freq so they dont
interfere with us and we dont interfere with them. There is plenty of room in
that part of the band for everyone. </div>
<div>
<div>
<div> </div>
<div> </div>
<div> </div>
<div> </div>
<div>
<div>On May 19, 2013, at 7:01 PM, David McKenzie wrote:</div><br>
<blockquote type="cite">
<div dir="ltr">cool, glad it's resolved and that we figured it out<br></div>
<div class="gmail_extra"><br><br>
<div class="gmail_quote">On Sun, May 19, 2013 at 5:47 PM, Bob <span dir="ltr"><<a href="mailto:n1ujs@toast.net" target="_blank">n1ujs@toast.net</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="PADDING-LEFT:1ex;MARGIN:0px 0px 0px 0.8ex;BORDER-LEFT:#ccc 1px solid">
<div dir="ltr">The latest:<br>
<div>
<div> </div>
<div class="gmail_quote">---------- Forwarded message ----------<br>From: <b class="gmail_sendername">Kristina A. Lynch</b> <span dir="ltr"><<a href="mailto:Kristina.A.Lynch@dartmouth.edu" target="_blank">Kristina.A.Lynch@dartmouth.edu</a>></span><br>
Date: Sun,
May 19, 2013 at 5:28 PM<br>Subject: RE: Mystery QRM (2)<br>To: Max Fagin
<<a href="mailto:maxfagin@gmail.com" target="_blank">maxfagin@gmail.com</a>>, "David G. McGaw" <<a href="mailto:David.G.McGaw@dartmouth.edu" target="_blank">David.G.McGaw@dartmouth.edu</a>><br>
Cc: "Eric W. Hansen"
<<a href="mailto:Eric.W.Hansen@dartmouth.edu" target="_blank">Eric.W.Hansen@dartmouth.edu</a>>, "Yorke J. Brown" <<a href="mailto:Yorke.J.Brown@dartmouth.edu" target="_blank">Yorke.J.Brown@dartmouth.edu</a>>, "Maxwell H. Fagin"
<<a href="mailto:Maxwell.H.Fagin@dartmouth.edu" target="_blank">Maxwell.H.Fagin@dartmouth.edu</a>>, Bob <<a href="mailto:n1ujs@toast.net" target="_blank">n1ujs@toast.net</a>>, "Todd
S. Anderson" <<a href="mailto:Todd.S.Anderson.14@dartmouth.edu" target="_blank">Todd.S.Anderson.14@dartmouth.edu</a>><br><br><br>
<div>
<div style="FONT-SIZE:10pt;FONT-FAMILY:tahoma;DIRECTION:ltr"><br>Dave,
Eric-<br>Please relay my apologies to the group who were disturbed by our
transmissions.<br>We use the ham radio as our backup telemetry system on
our research balloons,<br>for about 2 hours once or twice a year; we
have been doing this for <br>approximately five years. It is
possible that Amanda Slagle (who graduated <br>last year) was in the habit
of telling Dave McGaw ahead of time? And this<br>protocol got
slipped since she left. We can certainly be sure to let Dave know
<br>in the future, if that would be helpful. Also, now that our DNT
system is working,<br>we could significantly drop the data rate on the
backup ham transmissions if that<br>would be helpful. Please let me
know.<br>Regards<br>Kristina Lynch<br>Dartmouth Physics/GreenCube Faculty
Mentor<br><a href="http://www.dartmouth.edu/~aurora" target="_blank">www.dartmouth.edu/~aurora</a><br><br>
<div style="FONT-SIZE:16px;FONT-FAMILY:times new roman">
<hr>
<div style="DIRECTION:ltr"><font color="#000000" face="Tahoma"><b>From:</b>
Max Fagin [<a href="mailto:maxfagin@gmail.com" target="_blank">maxfagin@gmail.com</a>]<br><b>Sent:</b> Sunday, May 19, 2013
3:02 PM<br><b>To:</b> David G. McGaw<br><b>Cc:</b> Eric W. Hansen; Yorke
J. Brown; Maxwell H. Fagin; Bob; Todd S. Anderson; Kristina A. Lynch
<div><br><b>Subject:</b> Re: Mystery QRM (2)<br></div></font><br></div>
<div>
<div>
<div></div>
<div>
<div>The interfering transmission on 144.440 MHz was coming from the
GreenCube 6 balloon payload which was in the air over Mt. Washington from
10:30-12:30 this morning. The flight is over, and there will be no
more transmissions on that frequency today. Todd and Kristina (cc'ed) are
the lead investigators on the payload, and should be contacted with
questions about the transmissions.</div>
<div> </div>
<div>-Max</div>
<div><br>On May 19, 2013, at 2:21 PM, "David G. McGaw" <<a href="mailto:david.g.mcgaw@dartmouth.edu" target="_blank">david.g.mcgaw@dartmouth.edu</a>> wrote:<br><br></div>
<blockquote type="cite">
<div>Hi Eric,<br><br>It is possible that Yorke and Max have a packet
transmitter on their research balloons. If so, they need to check
frequencies beforehand AND have to contact you as the trustee of W1ET or
me as the officer of record before using the callsign.<br><br>Yorke,
Max?<br><br>David N1HAC<br><br><br>
<div>On 5/19/13 1:32 PM, Eric W. Hansen wrote:<br></div>
<blockquote type="cite">
<div>Interesting hypothesis. Any ideas?</div>
<div> </div>
<div>Eric</div>
<div> </div><span>
<div style="FONT-SIZE:11pt;BORDER-TOP:#b5c4df 1pt solid;FONT-FAMILY:calibri;BORDER-RIGHT:medium none;BORDER-BOTTOM:medium none;PADDING-BOTTOM:0in;TEXT-ALIGN:left;PADDING-TOP:3pt;PADDING-LEFT:0in;BORDER-LEFT:medium none;PADDING-RIGHT:0in">
<span style="FONT-WEIGHT:bold">From: </span>Bob <<a href="mailto:n1ujs@toast.net" target="_blank">n1ujs@toast.net</a>><br><span style="FONT-WEIGHT:bold">Date: </span>Sunday, May 19, 2013 1:18
PM<br><span style="FONT-WEIGHT:bold">To: </span>Eric Hansen <<a href="mailto:eric.w.hansen@dartmouth.edu" target="_blank">eric.w.hansen@dartmouth.edu</a>><br><span style="FONT-WEIGHT:bold">Subject: </span>Re: Packet
transmissions<br></div>
<div> </div>
<div>
<div>
<div dir="ltr">
<div>Some have suggested it might be a weather balloon? In any
case, it ceased transmitting about an hour ago.<br><br></div>
<div>Thanks for looking into it.<br><br></div>
<div>Bob N1UJS<br></div></div>
<div class="gmail_extra"><br><br>
<div class="gmail_quote">On Sun, May 19, 2013 at 1:08 PM, Eric W. Hansen
<span dir="ltr"><<a href="mailto:Eric.W.Hansen@dartmouth.edu" target="_blank">Eric.W.Hansen@dartmouth.edu</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="PADDING-LEFT:1ex;MARGIN:0px 0px 0px 0.8ex;BORDER-LEFT:#ccc 1px solid">
<div style="WORD-WRAP:break-word;FONT-SIZE:12px;FONT-FAMILY:arial,sans-serif">
<div>That is really strange. Our repeater operates on 444.950,
and that's the only source of transmission I am aware of. We
haven't operated packet for years. I will forward your message
to some other people who can help track this down and get back to
you if I find anything out.</div>
<div> </div>
<div>Thanks for the heads up.</div>
<div> </div>
<div>Best,</div>
<div>Eric Hansen</div>
<div> </div><span>
<div style="FONT-SIZE:11pt;BORDER-TOP:#b5c4df 1pt solid;FONT-FAMILY:calibri;BORDER-RIGHT:medium none;BORDER-BOTTOM:medium none;PADDING-BOTTOM:0in;TEXT-ALIGN:left;PADDING-TOP:3pt;PADDING-LEFT:0in;BORDER-LEFT:medium none;PADDING-RIGHT:0in">
<span style="FONT-WEIGHT:bold">From: </span>Bob <<a href="mailto:n1ujs@toast.net" target="_blank">n1ujs@toast.net</a>><br><span style="FONT-WEIGHT:bold">Date: </span>Sunday, May 19, 2013 11:25
AM<br><span style="FONT-WEIGHT:bold">To: </span>Eric Hansen <<a href="mailto:eric.w.hansen@dartmouth.edu" target="_blank">eric.w.hansen@dartmouth.edu</a>>, ham radio club
<<a href="mailto:ham.radio.club@dartmouth.edu" target="_blank">ham.radio.club@dartmouth.edu</a>><br><span style="FONT-WEIGHT:bold">Cc: </span>450 <<a href="mailto:450@lists.vhfwiki.com" target="_blank">450@lists.vhfwiki.com</a>><br>
<span style="FONT-WEIGHT:bold">Subject: </span>Packet
transmissions<br></div>
<div> </div>
<div>
<div>
<div dir="ltr">
<div>
<div>
<div>
<div>
<div>
<div>To whomever it may concern,<br><br></div>There are strong
packet transmissions being sent on 144.440 that are identified by
the W1ET call sign. They are causing a bit of a disturbance to
a large group of operators on 144.450. I imagine this is
unintended, as the last time something like this happened it turned
out the transmissions were intended for a frequency 600 khz higher,
but the operator had inadvertently pushed the "shift
button".<br></div>Could you please check your station and see if it
is responsible?<br><br></div>
<div>Here is a copy of the transmission:<br><br>
<div><b>W1ET*>WIDE1-1>WIDE2-1>APOT21
<UI>:/150425h4403.66N/07114.</b><b>84WO-19C Good fix 5
Seconds</b></div>
<div><b>W1ET*>WIDE1-1>WIDE2-1>APOT21
<UI>:/150430h4403.55N/07114.</b><b>74WO/A=041788-20C Good fix
5 Seconds</b></div>
<div><b>W1ET*>WIDE1-1>WIDE2-1>APOT21
<UI>:/150436h4403.44N/07114.</b><b>66WO/A=041928-20C Good fix
5 Seconds</b></div>
<div><b>W1ET*>WIDE1-1>WIDE2-1>APOT21
<UI>:/150448h4403.20N/07114.</b><b>47WO/A=042230-20C Good fix
5 Seconds</b></div>
<div><b>W1ET*>WIDE1-1>WIDE2-1>APOT21
<UI>:/150454h4403.08N/07114.</b><b>40WO/A=042363-20C Good fix
5 Seconds</b></div>
<div><b>W1ET*>WIDE1-1>WIDE2-1>APOT21
<UI>:/150500h4402.96N/07114.</b><b>34WO/A=042468-20C Good fix
5 Seconds</b></div>
<div><b>W1ET*>WIDE1-1>WIDE2-1>APOT21
<UI>:/150506h4402.84N/07114.</b><b>28WO-20C Good fix 5
Seconds</b></div>
<div><b>W1ET*>WIDE1-1>WIDE2-1>APOT21
<UI>:/150512h4402.76N/07114.</b><b>22WO-20C Good fix 5
Seconds</b></div>
<div> </div></div>It has been suggested that the actual
transmission bothering us may be a "retransmission" of your signal
by an "unknown station", however the only call sign in the
transmission is yours.<br></div>The signal I am receiving is quite
strong (40-60 over s-9 to a phased pair of 10 elements) in the
direction of roughly 20 degrees from my location in Newtown, CT, and
appears to be horizontally polarized.<br><br></div>Thank you for any
assistance you can provide us in this matter.<br><br></div>Bob
N1UJS<br>
<div>
<div>
<div> </div></div></div></div></div></div></span></div></blockquote></div>
<div> </div></div></div></div></span></blockquote><br></div></blockquote></div></div></div></div></div></div></div>
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