[OZAPRS] HF APRS
Ray Wells
vk2tv at exemail.com.au
Mon Mar 30 16:42:31 EST 2009
Hi Philip,
You probably guessed my reason for asking. With no existing 20m gates
you have no particular reason to stick with 14100 if a majority thought
the frequency currently in use in Oz was the better option. I have no
particular preference except that with VK and ZL being almost in the
same paddock, we should both adopt the same frequency so that we create
a more effective network of stations.
I guess I've been running 30m for near two years and it hears a bit of
activity. My 20m port has been in service for some months but sees
almost no traffic, about the same as when it was on the bbs a bit lower
down the band.
Ray vk2tv
Phillip wrote:
> Hi Ray,
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> as far as I know there are no 20mtr APRS HF ops at the
> moment here in NZ
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> I have had 30 running for about 1 year and over the last month 40 mtrs and
> the results have been poor
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> 73 Phillip
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> ZL2TZE
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> -------Original Message-------
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> From: Ray Wells
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> Date: 30/03/2009 3:35:20 p.m.
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> To: Australian APRS Users
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> Subject: Re: [OZAPRS] HF APRS
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> Hi Philip,
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> Can I gather that there are currently no 20m gateways operating in ZL?
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> I'm happy to operate on whatever frequency the list settles on and
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> 14.100 is as good as any for me, and it fits the WIA band plan for packet.
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> Scott, vk7hse, you're the only other 20m station I'm aware of, unless
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> Samantha has her gate running.. Would you like to comment?
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> Ray vk2tv
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> Phillip wrote:
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>> Hi Ray,
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>> I'm willing to give it ago I have TS 140 and a G5RV
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> East
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>> / West and another Nth / Sth using AGWPRO.
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>> So some testing would be appreciated I am around after 5pm NZT I have a RX
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>> on 14,100.5 LSB now
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>> have a look at the bottom of this page it may help
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>> http://zlhams.wikidot.com/aprsinfrastructure:infrastructure
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>> 73 Phillip
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>> APRS HF Net Wednesday 19.30 Hrs NZT 3.650.00 +/- QRM
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>> -------Original Message-------
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>> From: Ray Wells
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>> Date: 30/03/2009 11:50:29 a.m.
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>> To: Australian APRS Users
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>> Subject: Re: [OZAPRS] HF APRS
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>> In the apparent absence of a reference station, I have my 20m Igate on
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>> 14105.1 (according to my TS430) and I use 1600/1800Hz tones.
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>> Would somebody like to confirm if this is the preferred frequency, and
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>> if it isn't, what should I use. I chose the frequency based on the
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>> one-time existence of a vk6 on that frequency. It has been previously
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>> been suggested that we should consider the more-international 20m
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>> frequency (which I can't find right now, but it's not too far away from
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>> where I currently sit). The use of an international frequency would
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>> overcome one of David's gripes about 20m - not enough stations.
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>> BTW, Robert, my dipole is at 45' and looks favourably towards ZL.
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>> Let's debate the 20m frequency issue and come up with a standard.
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>> Ray vk2tv
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>> Robert Thirkettle wrote:
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>>> Hi David if we have a ZL 20M HF Gateway that hole is filled in. In ZL we
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>>> have a propagation issue if 40M is unworkable that is what we have at
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>>> present then no ZL HF solution will work that's why we then only have a
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>>> via VK option.
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>>> I used mobile 40M APRS in 2001 for a trip around the lower south Island
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>>> it worked well for paths over 200Km but that time was much closer to the
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>>> top of the sun spot cycle than now yesterday Gareth was struggling to
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>>> make a 600Km path work.
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>>> If VK and ZL want to make use of each others HF gateways then we need to
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>>> use a frequency that works 7MHz only works at dawn and dusk 10MHz also
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>>> only works for 1 or 2 more hours than 7MHz but 14MHz will work for most
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>>> of the daylight hours as well as giving a east coast VK to west coast VK
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>>> path.
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>>> I also do agree that a mix of 40M 30M and 20M gate ways will give the
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>>> greatest coverage.
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>>> I am working tonight to get my gateway up and going again.
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>>> Regards Rob Thirkettle ZL3RX
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>>> Dept Physics & Astronomy
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>>> University of Canterbury
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>>> Private Bag 4800,
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>>> Christchurch 8020,
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>>> New Zealand
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>>> Tel: +64 3 364 2510
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>>> Fax: +64 3 364 2469
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>>> mailto:rob.thirkettle at canterbury.ac.nz
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>>> -----Original Message-----
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>>> From: ozaprs-bounces at aprs.net.au [mailto:ozaprs-bounces at aprs.net.au] On
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>>> Behalf Of David and Justine Olsen
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>>> Sent: Sunday, 29 March 2009 12:27 p.m.
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>>> To: Australian APRS Users
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>>> Subject: [OZAPRS] Frequencies for Peoppel Corner and Central Australia
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>>> Ray is correct. My push or 40m (not just for me) is because standard
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>>> calls can't use 30m. 30m is ideal for the desert trips, but
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>>> unfortunately I and other standard calls can't use it.
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>>> What I am suggesting is that my observations and predictions show 20m
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>>> though better for data, does not provide coverage. The skip (dead)
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>>> zone covers most of Australia at most times of day from Central
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>>> Australia.
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>>> Therefore what I am advocating is more igates on 40m because it
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>>> provides a logical second choice to 30m, 20m being my third choice
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>>> for the reasons metioned above.
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>>> More igates on more frequencies though is the ideal in my view.
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>>> David
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>>> VK4MDX
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