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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 color=3D#0000ff size=3D2><SPAN =
class=3D661460702-07072004>Hi I=20
sent this email out some time ago and it never seemed to make it to the =
list, it=20
was titled then HF MOBILE beaconing, food for thought. It never made it =
cant see=20
that I would be cut out possibly the title with "food for thought" =
included in=20
it got it held as possible Spam would love to know why it did not =
get out=20
just the same.</SPAN></FONT></DIV>
<DIV><FONT face=3DArial color=3D#0000ff size=3D2><SPAN =
class=3D661460702-07072004>This=20
is my second attempt so apologies if you happen to get it twice but =
after a=20
couple of hours with other OZAPRS traffic being sent after I have tried=20
again.</SPAN></FONT></DIV>
<DIV><FONT face=3DArial color=3D#0000ff size=3D2><SPAN=20
class=3D661460702-07072004>Brian</SPAN></FONT></DIV>
<DIV><FONT face=3DArial color=3D#0000ff size=3D2><SPAN=20
class=3D661460702-07072004></SPAN></FONT> </DIV>
<DIV class=3DOutlookMessageHeader dir=3Dltr align=3Dleft><FONT =
face=3DTahoma=20
size=3D2>-----Original Message-----<BR><B>From:</B> Brian Beamish=20
[mailto:bbeamish at bigpond.net.au]<BR><B>Sent:</B> Wednesday, 7 July 2004 =
9:58=20
AM<BR><B>To:</B> OZAPRS<BR><B>Subject:</B> HF MOBILE beaconing, food for =
thought.<BR><BR></FONT></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 trying=20
or even intending to stir up a hornets nest so please no flack just =
constructive=20
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 experience=20
over a long period we find that with skip and band conditions =
unlike=20
VHF where you can get a "Hit" just about every beacon quite often on HF =
two or=20
three beacons, possibly more if conditions are not right, can easily not =
get=20
heard in <STRONG><U>TOTAL</U></STRONG> by a gateway and this being =
the case=20
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 was=20
copied and gated we agree 10-15 minutes beaconing would be fine =
but in=20
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 a=20
reasonable increase in Mobiles that we feel beacons intervals of 1.5 to =
2 minute=20
intervals would be acceptable especially considering that not every HF =
beacon is=20
gated and most of the day all one hears is the Gateways with their =
occasional=20
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 have=20
been mobile for at least 1.5 hours over the past 24 hours beaconing then =
at=20
every minute if you were to look at findu, at this moment, you would =
find that=20
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 to=20
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 it=20
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 bonus=20
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></BODY></HTML>
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