[450] Fwd: Mystery QRM (2)

[Bob]

Gentleman,

Mystery solved:

---------- Forwarded message ----------
From: Max Fagin <maxfagin at gmail.com>
Date: Sun, May 19, 2013 at 3:02 PM
Subject: Re: Mystery QRM (2)
To: "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>, Max Fagin <maxwell.h.fagin at dartmouth.edu>,
Bob <n1ujs at toast.net>, "Todd S. Anderson" <
Todd.S.Anderson.14 at cloud.dartmouth.edu>, "Kristina A. Lynch" <
Kristina.A.Lynch at dartmouth.edu>


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
>
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.vhfwiki.com/pipermail/450/attachments/20130519/efb1403b/attachment.html>
-------------- next part --------------
_______________________________________________
450 mailing list
450 at lists.vhfwiki.com
http://lists.vhfwiki.com/cgi-bin/mailman/listinfo/450