[NLRS] Winipeg to Minneapolis 10GHz !

Wed, 30 Jul 2003 09:11:35 -0500

Hi Guys,

I was on last night as well, but heard nothing but a whisper here and =
there.  In fact it may have been nothing.  But I suspect it was possibly =
very weak backscatter from the EN34 stations.  But cant tell for sure.  =
I was moving the headings all the way from NW to NE and varied the =
elevation controls as well.  I listend for about a half an hour and then =
the storm came thru here with real bad winds, so I parked the dishes and =
turned it all off.

I called Jon on the cell phone, right after he had worked Barry, At =
least I got to listen to VE4 on 10 ghz via the cell!

Great job guys!

754 KM....Hmmmmm.  I will be watching the WX!

73

Mike - KM0T

  ----- Original Message -----=20
  From: Chris Cox=20
  To: Donn Baker=20
  Cc: [email protected] ; Barry VE4MA ; [email protected]=20
  Sent: Wednesday, July 30, 2003 8:07 AM
  Subject: Re: [NLRS] Winipeg to Minneapolis 10GHz !

  Good morning, Donn.

  On Wed, 30 Jul 2003, Donn Baker wrote:
  > I'd be interesting hearing about the doppler... how severe was it ?  =
The
  > books say it shouldn't have been too bad, but what did reality say ?
  It was quite interesting, actually.

  I stopped over at the Burnsville Parkway overlook just before 0100Z =
and=20
  caught the tail end of the event.

  Barry's signal was somewhat distorted, akin to CW Au on 50MHz where =
there=20
  was still a goodly amount of pure tone audible through the "shh".  =
This=20
  was obviously forward scatter.  Listening to John, 'FQA, and Gary, =
'GHZ,=20
  via backscatter presented no audible CW tone, only the typical Au =
quality=20
  most common on 144MHz and up.  Doppler offset from the centre =
frequency=20
  was virtually non-existant - the signal was simply spread over a few =
kHz=20
  around the nominal frequency.

  It is possible that the difference in quality of Barry's signal =
relative=20
  to John and Gary was also partially due to forward troposcatter rather =

  than the auroral-sounding rain-scatter.  Too little experience to say =
for=20
  sure.

  Excellent fun regardless!

   >=20
  > Does anyone have a radar picture of the N Minnesoata area (Grand =
Forks
  > radar, or MSP radar on long range scan) for the time of the QSO ?  =
It would
  > be nice to have  to see what the storms were....

  I am sure there is an archive somewhere that may contain an image.  =
When=20
  Jon and Barry initially made contact, there was a reasonable storm =
present=20
  centred just to the east of Bemidji.  There was also a much larger and =

  visibly more intense storm system present to the north of the path=20
  covering a large north-south area, but fairly narrow east-west area.  =
This=20
  appeared to be centred over International Falls.  Given the beam =
headings=20
  used at each end of the link, I think it unlikely that this larger =
system=20
  was used for the contact.  Given it's significantly larger size it may =

  have worked as well or better than the Bemidji system.  However, it =
also=20
  may have been too far to the North of MSP and/or East of WPG.

  --=20
  73  Chris Cox  N0UK, G4JEC, ex-AB0CN, ex-G8PTC  RNARS #1157  EN34jv

  [email protected]        Ping Jockey's do it until they HEAR the =
burn...
    WWW Home Page: http://WWW.Chris.Org/   http://www.pingjockey.net=20
  Cultural observation:
  Europeans think 100 miles is a long way;
  Americans think 100 years is a long time!

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