[aprssig] 6M APRS via meteor scatter forum?

Ron VE8RT ve8rt at yknwt.ca
Sun Oct 15 08:41:40 CDT 2017


Thanks Ev,

    So many questions, I'll be reviewing what I can find online to get
a better understanding of how its set up and the timing.

    Questions like, is there a master (igate) station that interrogates
the remote stations (only the master then has a high duty cycle)?  Are
there standards for the mode and frequency, it would seem not as either
FM or SSB can be used?

    Initially I could start with monitoring using software like this
http://radio.meteor.free.fr/fr/en/theorie.html 

    At the moment I should have everything I need for monitoring.  For
an on air test I'll need to set up an igate station, and a couple of
remote stations with APRS interfaces?

    Ron VE8RT

On Sun, 15 Oct 2017 11:11:21 +0000 (UTC)
Ev Tupis <w2ev at yahoo.com> wrote:

>  Hi Ron,If you are interested in specifically using APRS for MS on 6 meters, you will need to setup both ends of the path, just as you have done.  There is little-to-no 6 meter APRS activity on 6 meters to use as a "base".
> Operation requires a transceiver and/or amplifier that is capable of 50% duty cycle (use a Fan!).  One station will TX for 15 seconds while the other one RX's.  Clearly, you must coordinate TX and RX intervals.
> 
> The more power you transmit, the easier it is to make a contact (a general principle that transcends MS-specific communication).
> Some degree of success has been had with as little as 25 watts + 10 dBi antenna (250 watts EIRP) at 6 meters.
> Success is largely defined within the "time dimension" (being able to operate for long periods of time).  Since everything is computer controlled, it is possible to select a seldom used frequency and let it run over night...taking advantage of the spike in MS ionization that occurs from 3 AM to 9 AM local time.  This works well if you are allowed to run under "automatic control" (like an FM repeater does) rather than being forced to have a human operator present at all time.
> 
> FM APRS works well.  So does the SSB mode.  You can experiment to see which provides a superior experience.
> 'hope this has helped as a bit of a primer.
> 
> Best regards,Ev, W2EV
> 
>     On Saturday, October 14, 2017, 8:21:12 PM EDT, Ron VE8RT <ve8rt at yknwt.ca> wrote:  
>  
>  Hi,
> 
>   I've re-joined the APRS SIG forum.
> 
>   And I'm doing a little shopping for 6M gear.  I have a FT 726 that
> is being shipped to me from the US, Joel at RF Connection offered it to
> me for free, along with additional modules, and manuals, for the cost
> of shipping.  And I have a new in the box Cushcraft 5el yagi thats been
> in the back shed since I bought it.  With short coax run up the tower I
> should be fine without a masthead preamp.
> 
>   The National APRS Meteorscatter test that Bob mentioned would be
> interesting to look at.  Of particular interest is the useable range,
> we need a thousand kilometres to get into Edmonton from here, the
> closest major city.  This part of the Northwest Territories is
> relatively flat, the Yukon on the other hand is mountainous and I'd
> like to know how well this would work in the mountain valleys. 
> 
>   Yuuri, VY1YU / JS6SHS, who ran the earlier HF propagation
> experiments has been e-mailed to see if he'd be interested in trying a
> MS APRS experiment.  He's gotten back to me and is interested in
> setting up some tests.
> 
>   What additional hardware, other than the transceiver and antenna,
> should I have to try this?  I've been tinkering with Arduinos, Cory had
> mentioned earlier, but I'm not sure where they fit in.
> 
>   If there is anything that I need to buy out of the US I'd like to
> get it ordered and on it's way to Joel at RF Connection to have it
> included in the package he's sending me.
> 
>   Thanks for your help!
> 
>         Ron VE8RT (30M WSPR as VE8TEA)
> 
> On Thu, 12 Oct 2017 16:45:45 -0400
> Cory Vickruck <crvickru at lakeheadu.ca> wrote:
> 
> > Also I would be happy to setup an igate for him to test. I think I might be
> > just out of range however. I am in thunder bay Ontario
> > 
> > 
> > On Oct 12, 2017 4:31 PM, "Cory Vickruck" <crvickru at lakeheadu.ca> wrote:
> > 
> > > After reading a bit more about the topic I am interested in trying it out.
> > > How much power would be enough for reliable packets at 6m APRS?
> > >
> > >
> > > On Oct 12, 2017 2:36 PM, "Cory Vickruck" <crvickru at lakeheadu.ca> wrote:
> > >
> > >> Could PSK-31 be a option? Maybe fsq would be a good option as it can be
> > >> interfaced with an Arduino.
> > >>
> > >> On Oct 12, 2017 2:12 PM, "Robert Bruninga" <bruninga at usna.edu> wrote:
> > >>
> > >> We have had great success with APRS Meteor Scatter on 6 meters, but I have
> > >> not done it since 1996?  Maybe its time for some new blood.  Let me see if
> > >> I can find the results of our first National APRS Meteroscatter test.
> > >>
> > >> Everyone, meet Ron, VE8RT who needs to communicate probably by APRS using
> > >> Meteorscatter from the great Northwest...  He currently is not on the
> > >> APRSSIG and so reply here so we can see the interest, and I will forward
> > >> any useful replies to him.  Bob, WB4aPR
> > >>
> > >> -----Original Message-----
> > >> From: Ron VE8RT [ve8rt at yknwt.ca]
> > >> Subject: 6M APRS via meteor scatter forum?
> > >>
> > >> Hi Bob,
> > >>
> > >>    I'm looking for a forum, if there is one, on meteor scatter and APRS.
> > >> I'm one of less than a score of active amateur radio operators here in the
> > >> Northwest Territories of Canada.  The majority of amateur radio activity
> > >> is here in Yellowknife (the capital), with distances of over a thousand
> > >> kilometres seperating some of us.  HF propagation is generally poor and
> > >> unreliable, so I'm looking into 6M meteor scatter APRS or other digital
> > >> modes for emergency communications.
> > >>
> > >>    I had joined the TAPR APRS SIG forum for a few days, having posted my
> > >> introduction and my interest in meteor scatter APRS, but it didn't
> > >> generate any replies (so I unsubscribed).
> > >>
> > >>    Would you have any suggestions?
> > >>
> > >>    Thanks,
> > >>
> > >>            Ron VE8RT in DP22
> > >> --
> > >> Ron VE8RT <ve8rt at yknwt.ca>
> > >> _______________________________________________
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> > >> aprssig at tapr.org
> > >> http://www.tapr.org/mailman/listinfo/aprssig
> > >>
> > >>
> > >>
> 
> 
> -- 
> Ron VE8RT <ve8rt at yknwt.ca>
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-- 
Ron VE8RT <ve8rt at yknwt.ca>


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