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Subject:
From:
Jeff Kenyon <[log in to unmask]>
Reply To:
For blind ham radio operators <[log in to unmask]>
Date:
Fri, 4 Aug 2006 04:53:09 -0400
Content-Type:
TEXT/PLAIN
Parts/Attachments:
TEXT/PLAIN (88 lines)
Hi Steve and the group.  Like I said it was just the station from Florida
and one in OOhio.  The interesting thing is that in 2001 wwith the high
sunspot activity I didn't hear anything on the FM band, but 30-50 MHz was
hopping consistently.





On Thu, 3 Aug 2006, Ham Steve wrote:

> Just a slight difference with Lew's post.  Typically, if it is sporatic E,
> you will find the MUF and things from there down in frequencies will be
> hopping.  With tropoducting, it is typically a VHF/UHF phenomenom, so if you
> see it on FM broadcast frequencies, you would certainly expect to see it on
> 144MHZ.  Usually, as Lew notes, you will get longer distances with sporatic
> E as you often get multiple hops.  The other thing you see with Sporatic E
> is that if the one station from Florida starts fading out, you might see a
> station from Virginia or the Carolinas come in quickly and fade as the
> ionized layer disintegrates.
>
> Steve, K8SP
> ----- Original Message -----
> From: "Louis Kim Kline" <[log in to unmask]>
> To: <[log in to unmask]>
> Sent: Thursday, August 03, 2006 6:28 PM
> Subject: Re: rare FM DX catch from Michigan!
>
>
> > Hi.
> >
> > Another thought on Howard's post.  To really determine the mode of
> > enhancement, it is helpful to look at a variety of VHF and UHF
> > frequencies,
> > and see which end of the spectrum the enhancement is predominant on.  If
> > it
> > seems like it is starting at the upper frequencies and working down, i.e.
> > FM and the upper TV channels, it is usually ducting or some tropospheric
> > effect as Howard mentions in his post.  This is more common on FM
> > broadcast.  However, if it is starting at the low VHF frequencies and
> > working up, and it is marked by rapid fading, and appears to keep
> > switching
> > where signals are coming in from, then it is usually sporadic E skip.  The
> > FM broadcast band is at a unique spot in the spectrum because it can get
> > enhancement from either mode.
> >
> > When sporadic E is the mode, you can also often get much greater
> > distances,
> > especially if a good enough sporadic E event occurs to get a double hop.
> >
> > As I said, tropo is more common on the FM band, but occasionally sporadic
> > E
> > does happen.  The best way to figure out what is going on is to look at a
> > bunch of different frequencies.  If 6 meters is open, and 2 meters isn't,
> > or if the lower TV channels are absolutely dead, but your weather radio is
> > jumping off the table, those are good clues as to what is going on.
> >
> > By the way, the weather radio can often be a real good thing to observe
> > when looking for two meter band openings because while many frequencies on
> > 2 meters may just not be active when the opening occurs, weather stations
> > provide nice steady signals that can make some effective propagation
> > beacons.
> >
> > 73, de Lou K2LKK
> >
> >
> >
> > At 09:00 PM 8/2/2006 -0500, you wrote:
> >>I'd doubt if you found e-skip that high in frequency, more like it is
> >>tropo or tropospheric bend skip.  This is caused by ducting of layers
> >>of air where warmer air is layered on top of cooler air.  Common in
> >>summer, especially near large bodies of water.  It's really fun and
> >>you can work  often for hundreds and hundreds of miles.
> >>
> >>
> >>--
> >>No virus found in this outgoing message.
> >>Checked by AVG Anti-Virus.
> >>Version: 7.1.394 / Virus Database: 268.10.5/405 - Release Date: 8/1/2006
> >
> > Louis Kim Kline
> > A.R.S. K2LKK
> > Home e-mail:  [log in to unmask]
> > Work e-mail:  [log in to unmask]
> > Work Telephone:  (585) 697-5753
> >
>

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