[450] Fwd: Mystery QRM (2)

Mon May 20 10:20:16 EDT 2013

And as a clarification, from their own project supervisors....not Bob.
On May 20, 2013 4:19 PM, "John Foege" <john.foege at gmail.com> wrote:

> 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.....
>
> All in all pretty low odds of any of this happening!
>
> Certainly, the tone with which the students responsible were addressed was
> imho harsh...
>
> Oh well...
> On May 20, 2013 3:40 PM, "Rich" <t41 at optonline.net> wrote:
>
>>   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.
>>
>>
>>
>>  *From:* John Foege <john.foege at gmail.com>
>> *Sent:* Monday, May 20, 2013 4:47 AM
>> *To:* 144.450 Mailing List <450 at lists.vhfwiki.com>
>> *Subject:* Re: [450] Fwd: Mystery QRM (2)
>>
>>   Bob,
>>
>> I agree with Chris...these people certainly feel like they just got
>> repirmanded for doing absolutely nothing wrong.
>>
>> 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...
>>
>> That you were suprised how far they got out...
>>
>> etc. etc....
>>
>>
>> We don't want to poo poo people just because we managed to hear their
>> +10,000 FT ASL transmitters :P
>>
>>
>> On Mon, May 20, 2013 at 5:10 AM, chris <cralt at comcast.net> wrote:
>>
>>>  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.
>>>
>>>
>>>
>>>
>>>  On May 19, 2013, at 7:01 PM, David McKenzie wrote:
>>>
>>>  cool, glad it's resolved and that we figured it out
>>>
>>>
>>> On Sun, May 19, 2013 at 5:47 PM, Bob <n1ujs at toast.net> wrote:
>>>
>>>> The latest:
>>>>
>>>> ---------- Forwarded message ----------
>>>> From: Kristina A. Lynch <Kristina.A.Lynch at dartmouth.edu>
>>>> Date: Sun, May 19, 2013 at 5:28 PM
>>>> Subject: RE: Mystery QRM (2)
>>>> To: Max Fagin <maxfagin at gmail.com>, "David G. McGaw" <
>>>> David.G.McGaw at dartmouth.edu>
>>>> Cc: "Eric W. Hansen" <Eric.W.Hansen at dartmouth.edu>, "Yorke J. Brown" <
>>>> Yorke.J.Brown at dartmouth.edu>, "Maxwell H. Fagin" <
>>>> Maxwell.H.Fagin at dartmouth.edu>, Bob <n1ujs at toast.net>, "Todd S.
>>>> Anderson" <Todd.S.Anderson.14 at dartmouth.edu>
>>>>
>>>>
>>>>
>>>> Dave, Eric-
>>>> Please relay my apologies to the group who were disturbed by our
>>>> transmissions.
>>>> We use the ham radio as our backup telemetry system on our research
>>>> balloons,
>>>> for about 2 hours once or twice a year;  we have been doing this for
>>>> approximately five years.  It is possible that Amanda Slagle (who
>>>> graduated
>>>> last year) was in the habit of telling Dave McGaw ahead of time?  And
>>>> this
>>>> protocol got slipped since she left.  We can certainly be sure to let
>>>> Dave know
>>>> in the future, if that would be helpful.  Also, now that our DNT system
>>>> is working,
>>>> we could significantly drop the data rate on the backup ham
>>>> transmissions if that
>>>> would be helpful.  Please let me know.
>>>> Regards
>>>> Kristina Lynch
>>>> Dartmouth Physics/GreenCube Faculty Mentor
>>>> www.dartmouth.edu/~aurora
>>>>
>>>>  ------------------------------
>>>> *From:* Max Fagin [maxfagin at gmail.com]
>>>> *Sent:* Sunday, May 19, 2013 3:02 PM
>>>> *To:* David G. McGaw
>>>> *Cc:* Eric W. Hansen; Yorke J. Brown; Maxwell H. Fagin; Bob; Todd S.
>>>> Anderson; Kristina A. Lynch
>>>>
>>>> *Subject:* Re: Mystery QRM (2)
>>>>
>>>>   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.
>>>>
>>>> -Max
>>>>
>>>> On May 19, 2013, at 2:21 PM, "David G. McGaw" <
>>>> david.g.mcgaw at dartmouth.edu> wrote:
>>>>
>>>>  Hi Eric,
>>>>
>>>> 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.
>>>>
>>>> Yorke, Max?
>>>>
>>>> David N1HAC
>>>>
>>>>
>>>> On 5/19/13 1:32 PM, Eric W. Hansen wrote:
>>>>
>>>> Interesting hypothesis.  Any ideas?
>>>>
>>>> Eric
>>>>
>>>>  From: Bob <n1ujs at toast.net>
>>>> Date: Sunday, May 19, 2013 1:18 PM
>>>> To: Eric Hansen <eric.w.hansen at dartmouth.edu>
>>>> Subject: Re: Packet transmissions
>>>>
>>>>   Some have suggested it might be a weather balloon?  In any case, it
>>>> ceased transmitting about an hour ago.
>>>>
>>>> Thanks for looking into it.
>>>>
>>>> Bob N1UJS
>>>>
>>>>
>>>> On Sun, May 19, 2013 at 1:08 PM, Eric W. Hansen <
>>>> Eric.W.Hansen at dartmouth.edu> wrote:
>>>>
>>>>>  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.
>>>>>
>>>>> Thanks for the heads up.
>>>>>
>>>>> Best,
>>>>> Eric Hansen
>>>>>
>>>>>  From: Bob <n1ujs at toast.net>
>>>>> Date: Sunday, May 19, 2013 11:25 AM
>>>>> To: Eric Hansen <eric.w.hansen at dartmouth.edu>, ham radio club <
>>>>> ham.radio.club at dartmouth.edu>
>>>>> Cc: 450 <450 at lists.vhfwiki.com>
>>>>> Subject: Packet transmissions
>>>>>
>>>>>     To whomever it may concern,
>>>>>
>>>>> 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".
>>>>> Could you please check your station and see if it is responsible?
>>>>>
>>>>> Here is a copy of the transmission:
>>>>>
>>>>> *W1ET*>WIDE1-1>WIDE2-1>APOT21 <UI>:/150425h4403.66N/07114.**84WO-19C
>>>>> Good fix 5 Seconds*
>>>>> *W1ET*>WIDE1-1>WIDE2-1>APOT21 <UI>:/150430h4403.55N/07114.**74WO/A=041788-20C
>>>>> Good fix 5 Seconds*
>>>>> *W1ET*>WIDE1-1>WIDE2-1>APOT21 <UI>:/150436h4403.44N/07114.**66WO/A=041928-20C
>>>>> Good fix 5 Seconds*
>>>>> *W1ET*>WIDE1-1>WIDE2-1>APOT21 <UI>:/150448h4403.20N/07114.**47WO/A=042230-20C
>>>>> Good fix 5 Seconds*
>>>>> *W1ET*>WIDE1-1>WIDE2-1>APOT21 <UI>:/150454h4403.08N/07114.**40WO/A=042363-20C
>>>>> Good fix 5 Seconds*
>>>>> *W1ET*>WIDE1-1>WIDE2-1>APOT21 <UI>:/150500h4402.96N/07114.**34WO/A=042468-20C
>>>>> Good fix 5 Seconds*
>>>>> *W1ET*>WIDE1-1>WIDE2-1>APOT21 <UI>:/150506h4402.84N/07114.**28WO-20C
>>>>> Good fix 5 Seconds*
>>>>> *W1ET*>WIDE1-1>WIDE2-1>APOT21 <UI>:/150512h4402.76N/07114.**22WO-20C
>>>>> Good fix 5 Seconds*
>>>>>
>>>>> 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.
>>>>> 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.
>>>>>
>>>>> Thank you for any assistance you can provide us in this matter.
>>>>>
>>>>> Bob N1UJS
>>>>>
>>>>>
>>>>
>>>>
>>>>
>>>>
>>>>
>>>> _______________________________________________
>>>> 450 mailing list
>>>> 450 at lists.vhfwiki.com
>>>> http://lists.vhfwiki.com/cgi-bin/mailman/listinfo/450
>>>>
>>>>
>>> _______________________________________________
>>> 450 mailing list
>>> 450 at lists.vhfwiki.com
>>> http://lists.vhfwiki.com/cgi-bin/mailman/listinfo/450
>>>
>>>
>>>
>>> _______________________________________________
>>> 450 mailing list
>>> 450 at lists.vhfwiki.com
>>> http://lists.vhfwiki.com/cgi-bin/mailman/listinfo/450
>>>
>>>
>>
>> ------------------------------
>> _______________________________________________
>> 450 mailing list
>> 450 at lists.vhfwiki.com
>> http://lists.vhfwiki.com/cgi-bin/mailman/listinfo/450
>>
>> _______________________________________________
>> 450 mailing list
>> 450 at lists.vhfwiki.com
>> http://lists.vhfwiki.com/cgi-bin/mailman/listinfo/450
>>
>>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.vhfwiki.com/pipermail/450/attachments/20130520/0c19bfb5/attachment.html>
-------------- next part --------------
_______________________________________________
450 mailing list
450 at lists.vhfwiki.com
http://lists.vhfwiki.com/cgi-bin/mailman/listinfo/450