(meteorobs) Radio Forward Scatter

[bob71741]

Steve - Thanks for the info; I finally did get some reception, but not sure what station(s). My antenna too is pointed at 160°, which is the midpoint azimuth between the five stations that I'm trying to grab.

Thomas Ashcraft has had some success with the pilot tone on the new ATSC signals, and a few of these TV carriers are within my reach as well, but I'm running out of receivers to look at channels 2-5.

Regards
Bob

--- In meteorobs at yahoogroups.com, "medtc74" <roamer22 at ...> wrote:
>
> Bob, I am located in Arizona - for the past few days I have been getting good results on 61.25 MHz. There is a 100kw TV transmitter in Culican, Mexico, approx 650 miles away. My antenna is pointed to 160 degrees azimuth, elevated 15 degrees above the horizon.
> 
> - Steve
> 
> 
> 
> --- In meteorobs at yahoogroups.com, "bob71741" <bob71741@> wrote:
> >
> > I am putting up in the files section a wmv file of about 30 seconds of SNOTEL forward scatter so that you can see the differences between it and analog TV for those that want to try receiving that station.
> > Thomas Ashcraft has the best and most comprehensive archives for analog TV forward scatter. As Thomas mentioned, sporatic E is a problem at this time of year.
> > 
> > Also note that the audio FM of TV channel six (6) is at 87.75 MHz, not 86.24 for zero offset carrier.
> > 
> > For the past two days, in the early morning, I have been trying to use six Mexican TV stations at ch 6 for meteor scatter, but so far, no joy.
> > I am in the Phoenix Arizona area and the stations that I choose were in Hermosillo (314mi), Obregon (434mi), La Paz (655 mi), Los Mochis (564 mi), and Mazatlan (786 mi). They transmit between 50 - 100KW, so the output power and distances are ideal; not sure why no joy.
> > 
> > I also monitor NAVSPASUR at 216.98 MHz, but I'm in an ideal location for it.
> > 
> > 
> > 
> > 
> > --- In meteorobs at yahoogroups.com, Ed Majden <epmajden@> wrote:
> > >
> > > No, I'm not using FM.
> > > Ed
> > > 
> > > On 12-Jun-09, at 1:40 PM, Jeff Brower wrote:
> > > 
> > > > Micahel,
> > > >
> > > > Ch 6 video carriers are at 83.250 (zero offset), or at 83.260 (plus
> > > > offset) or at 83.240 MHz (negative offset) all in USB or CW mode --
> > > > not FM.  Or are you trying to listen for wide band FM audio for Ch 6
> > > > at 86.240 MHz? Just wanted to make sure you knew we use video carriers
> > > > which is down from the audio channel on TV. I'm recording lots of
> > > > echoes from SK and AB Canada as I type on 83.260 MHz.
> > > >
> > > > Regards,
> > > >
> > > > Jeff
> > > >
> > > > On 12-Jun-09, at 13:19 , Michael Boschat wrote:
> > > >
> > > >> On Fri, 12 Jun 2009, Ed Majden wrote:
> > > >>
> > > >>> Michael Boschat in Halifax uses FM but he says he needed an  
> > > >>> expensive
> > > >>> filter to get it to work.  Fortunately he managed to get an un-used
> > > >>> one at the University he is employed at.
> > > >>
> > > >>  Actually I use the TV carriers mostly Ch.6 because FM is too
> > > >> congested
> > > >> here. The filter was fom another university to eliminate as much  
> > > >> noise
> > > >> from FM stations and other stuff as possible to hear the meteors.
> > > >>
> > > >>  I'll monitor the 86.24 MHz (Ch.6) for awhile to see what I hear.
> > > >> I might pick up a few Canadian stations till we switch over in 2011.
> > > >>
> > > >>
> > > >>
> > > >> Clear skies
> > > >> ---------------
> > > >> Michael Boschat
> > > >> Halifax Center - Royal Astronomical Society of Canada
> > > >> Astronomy page:  http://www.chebucto.ns.ca/~aa063
> > > >>
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