No subject
Sun Aug 23 09:03:27 EST 2009
conditions unlike VHF where you can get a "Hit" just about every beacon
quite often on HF two or three beacons, possibly more if conditions are
not right, can easily not get heard in TOTAL by a gateway and this being
the case will not be gated.
Normal highway out of town conditions where most HF Mobile APRS would take
place could easily put you 50 to 100 Kms out, if we had perfect conditions
all day and every beacon was copied and gated we agree 10-15 minutes
beaconing would be fine but in actual fact this more often than not is not
the case.
As there are at present so few HF Mobile APRS stations operating and until
such time as we see a reasonable increase in Mobiles that we feel beacons
intervals of 1.5 to 2 minute intervals would be acceptable especially
considering that not every HF beacon is gated and most of the day all one
hears is the Gateways with their occasional beacons.
As an example I have been mobile for at least 1.5 hours over the past 24
hours beaconing then at every minute if you were to look at findu, at this
moment, you would find that the last time VK4BBS-15 was gated was over 24
hours ago then by VK3MY-4.
A different tack to the other suggestion we know but as my email reads
food for thought.
B C N U
Brian VK4BBS
PS: We agree that it would be great to see a gateway Alice Springs if that
was possible along a couple in VK6 all of which would be a real bonus of
that there is no doubt.
_____
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<DIV><FONT face=3DArial size=3D2>Hmm.. I see Richard is sugesting 10-15 =
minutes and=20
Des is looking for 1.5 to 2 mins .. I said I was running 7 mins in the =
mobile..=20
Good to see I am in the middle ground.. </FONT></DIV>
<DIV><FONT face=3DArial size=3D2></FONT> </DIV>
<DIV><FONT face=3DArial size=3D2>I would have to argue against the 1.5-2 =
mins Des..=20
Most days of late in this last week Ive been seeing 4BBS 4CLM 4DMI when =
its up=20
with regularity.. You may not have seen me driving around but Ive copied =
all=20
yous guys up there both in the mobile and at home..</FONT></DIV>
<DIV><FONT face=3DArial size=3D2></FONT> </DIV>
<DIV><FONT face=3DArial size=3D2>I started off this yesterday with the =
observation=20
in regards to 2HL and his aprox 30 second beacons..</FONT></DIV>
<DIV><FONT face=3DArial size=3D2></FONT> </DIV>
<DIV><FONT face=3DArial size=3D2>Its hit and miss at times on HF I agree =
but 2HL was=20
at 10am getting about 50-70 percent of his beacons onto our VHF net here =
and=20
into the Igate and likewise at 5pm when I got home he was getting 100 =
percent of=20
them in.. It was actually creating a noticable difference in traffic =
levels on=20
2m .. Hence my comments..</FONT></DIV>
<DIV><FONT face=3DArial size=3D2></FONT> </DIV>
<DIV><FONT face=3DArial size=3D2>As stated previously the Hop seems to =
be about 1000=20
km and as much as 2000km frequently.. That means I see VK3 most of the =
time VK2=20
nearly all the time and VK4 as soon as the suns up.. Yep southern =
VK8=20
would be a good spot for a Gate..</FONT></DIV>
<DIV><FONT face=3DArial size=3D2></FONT> </DIV>
<DIV><FONT face=3DArial size=3D2>I think we have started to develop the =
idea that=20
its very hard to get a posit through (as I know I was) but in reality we =
have=20
had a severe lack of Gates that was not realised until =
recently..</FONT></DIV>
<DIV><FONT face=3DArial size=3D2>We need to be careful of a mentality =
where we think=20
we will be able to get the mobile tracking on HF to be as frequent or =
acurate as=20
VHF Metro nets.. This will never be the case.. Lets face it if I am =
in the=20
middle of the desert a few Kms either way means nothing to most of us.. =
If we=20
make camp at night or for a few days then the last known posit is a fair =
guess=20
at being right..</FONT> </DIV>
<DIV> </DIV>
<DIV>Its interesting to see that we have not seen a posit from Andrew on =
Findu=20
for over 9 Days up there in VK6 as well.. So now I am worried as to his =
last=20
known posit being relavant.. I did copy him earlier this week in the =
mobile and=20
he had started heading south towards Perth so hes probably near Broome I =
guess=20
but that posit never got onto the net.. I would sugest we are better off =
on 20m=20
now frankly for this path.. The occasional ZL on 30m seems to bob up =
here giving=20
the impression that the path streches out at times but I guess in =
VK2/4/3 you=20
would see ZLs more often.. As Ive said Ive had up to 10 stations on the =
map in=20
the car with regularity and they are all east of here..</DIV>
<DIV> </DIV>
<DIV><FONT face=3DArial size=3D2>What we really need to look at with the =
HF gates is=20
making sure whereever possible to put them in quiet locations.. Ive had =
the good=20
fortune this last week or 2 to park the car in the hills on a job in the =
middle=20
of a padock well away from the noises of suburbs etc and the difference =
in the=20
map is amazing.. The signals that do decode and the distances are quite=20
impressive.. We know what its like with voice coms on HF to get a good =
quiet=20
locality but how much more so with packet on HF..</FONT></DIV>
<DIV><FONT face=3DArial size=3D2></FONT> </DIV>
<DIV><FONT face=3DArial size=3D2>Thers my bit.. </FONT></DIV>
<DIV><FONT face=3DArial size=3D2>Tony VK5AH</FONT></DIV>
<BLOCKQUOTE=20
style=3D"PADDING-RIGHT: 0px; PADDING-LEFT: 5px; MARGIN-LEFT: 5px; =
BORDER-LEFT: #000000 2px solid; MARGIN-RIGHT: 0px">
<DIV style=3D"FONT: 10pt arial">----- Original Message ----- </DIV>
<DIV=20
style=3D"BACKGROUND: #e4e4e4; FONT: 10pt arial; font-color: =
black"><B>From:</B>=20
<A title=3Dbbeamish at bigpond.net.au =
href=3D"mailto:bbeamish at bigpond.net.au">Brian=20
Beamish</A> </DIV>
<DIV style=3D"FONT: 10pt arial"><B>To:</B> <A =
title=3Dozaprs at marconi.ics.mq.edu.au=20
href=3D"mailto:ozaprs at marconi.ics.mq.edu.au">OZAPRS</A> </DIV>
<DIV style=3D"FONT: 10pt arial"><B>Sent:</B> Wednesday, July 07, 2004 =
9:27=20
AM</DIV>
<DIV style=3D"FONT: 10pt arial"><B>Subject:</B> [OZAPRS] HF MOBILE =
beaconing,=20
food for thought.</DIV>
<DIV><BR></DIV>
<DIV><SPAN class=3D851232323-06072004><FONT face=3DArial size=3D2>Hi=20
Folks</FONT></SPAN></DIV>
<DIV><SPAN class=3D851232323-06072004><FONT face=3DArial=20
size=3D2></FONT></SPAN> </DIV>
<DIV><SPAN class=3D851232323-06072004><FONT face=3DArial size=3D2>I =
am not=20
trying or even intending to stir up a hornets nest so please no flack =
just=20
constructive criticism if any.</FONT></SPAN></DIV>
<DIV><SPAN class=3D851232323-06072004><FONT face=3DArial=20
size=3D2></FONT></SPAN> </DIV>
<DIV><SPAN class=3D851232323-06072004><FONT face=3DArial size=3D2>Des =
VK4DMI-4 and=20
myself think along similar lines on this.</FONT></SPAN></DIV>
<DIV><SPAN class=3D851232323-06072004><FONT face=3DArial=20
size=3D2></FONT></SPAN> </DIV>
<DIV><SPAN class=3D851232323-06072004><FONT face=3DArial size=3D2>From =
our=20
experience over a long period we find that with skip and =
band=20
conditions unlike VHF where you can get a "Hit" just about every =
beacon quite=20
often on HF two or three beacons, possibly more if conditions are not =
right,=20
can easily not get heard in <STRONG><U>TOTAL</U></STRONG> by a =
gateway=20
and this being the case will not be gated.</FONT></SPAN></DIV>
<DIV><SPAN class=3D851232323-06072004><FONT face=3DArial=20
size=3D2></FONT></SPAN> </DIV>
<DIV><SPAN class=3D851232323-06072004><FONT face=3DArial =
size=3D2>Normal highway out=20
of town conditions where most HF Mobile APRS would take place could =
easily put=20
you 50 to 100 Kms out, if we had perfect conditions all day and every =
beacon=20
was copied and gated we agree 10-15 minutes beaconing would be fine=20
but in actual fact this more often than not is not the=20
case.</FONT></SPAN></DIV>
<DIV><SPAN class=3D851232323-06072004><FONT face=3DArial=20
size=3D2></FONT></SPAN> </DIV>
<DIV><SPAN class=3D851232323-06072004><FONT face=3DArial size=3D2>As =
there are at=20
present so few HF Mobile APRS stations operating and until such time =
as we see=20
a reasonable increase in Mobiles that we feel beacons intervals of 1.5 =
to 2=20
minute intervals would be acceptable especially considering that not =
every HF=20
beacon is gated and most of the day all one hears is the Gateways with =
their=20
occasional beacons.</FONT></SPAN></DIV>
<DIV><SPAN class=3D851232323-06072004><FONT face=3DArial=20
size=3D2></FONT></SPAN> </DIV>
<DIV><SPAN class=3D851232323-06072004><FONT face=3DArial size=3D2>As =
an example I=20
have been mobile for at least 1.5 hours over the past 24 hours =
beaconing then=20
at every minute if you were to look at findu, at this moment, you =
would find=20
that the last time VK4BBS-15 was gated was over 24 hours ago then =
by=20
VK3MY-4.</FONT></SPAN></DIV>
<DIV><SPAN class=3D851232323-06072004></SPAN> </DIV>
<DIV><SPAN class=3D851232323-06072004><FONT face=3DArial size=3D2>A =
different tack=20
to the other suggestion we know but as my email reads food for=20
thought.</FONT></SPAN></DIV>
<DIV><SPAN class=3D851232323-06072004><FONT face=3DArial=20
size=3D2></FONT></SPAN> </DIV>
<DIV><SPAN class=3D851232323-06072004><FONT face=3DArial size=3D2>B C =
N=20
U</FONT></SPAN></DIV>
<DIV><SPAN class=3D851232323-06072004><FONT face=3DArial =
size=3D2>Brian=20
VK4BBS</FONT></SPAN></DIV>
<DIV><SPAN class=3D851232323-06072004><FONT face=3DArial=20
size=3D2></FONT></SPAN> </DIV>
<DIV><SPAN class=3D851232323-06072004><FONT face=3DArial size=3D2>PS: =
We agree that=20
it would be great to see a gateway Alice Springs if that was=20
possible along a couple in VK6 all of which would be a =
real=20
bonus of that there is no doubt.</FONT></SPAN></DIV>
<DIV><SPAN class=3D851232323-06072004><FONT face=3DArial=20
size=3D2></FONT></SPAN> </DIV>
<DIV><SPAN class=3D851232323-06072004><FONT face=3DArial=20
size=3D2></FONT></SPAN> </DIV>
<DIV><SPAN class=3D851232323-06072004><FONT face=3DArial=20
size=3D2></FONT></SPAN> </DIV>
<P>
<HR>
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list<BR>ozaprs at marconi.ics.mq.edu.au<BR>http://marconi.ics.mq.edu.au/cgi-=
bin/mailman/listinfo/ozaprs<BR></BLOCKQUOTE></BODY></HTML>
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