[OZAPRS] Re: ozaprs Digest, Vol 13, Issue 13
ronk at sunlinux.com.au
Fri Feb 27 17:47:17 EST 2004
Terry thanks for your reply.
Terry Neumann wrote:
> Oh dear - it doesn't like HTML. Neither do I frankly, but I'm prepared
> to recognise the universal lanuage of the internet.
> So here is is again in plain old ordinary boring text (sigh).
> G'day all,
> I'd better respond to this one :-)
>> Message: 1
>> Date: Tue, 24 Feb 2004 11:47:56 +1100
>> From: Ron Perry <ronk at sunlinux.com.au>
>> Subject: [OZAPRS] HF APRS
>> To: OzAPRS <ozaprs at marconi.ics.mq.edu.au>
>> Message-ID: <403A9F3C.8030901 at sunlinux.com.au>
>> Content-Type: text/plain; charset=us-ascii; format=flowed
>> Hi APRSers,
>> The setup.
>> I currently have both my KAMs hooked up to the IC-735 on a 1/4wave
>> vertical on the roof of the house. I'm running UI-View, with one KAM+
>> doing both VHF and HF APRS, digipeating and Igating. The second Kam+
>> is on a terminal, running with PASSALL ON, so I can "see" all HF
>> packets, good and bad. This gives me some idea to what is being heard
>> at all times.
>> 10 Meg Propagation.
>> At the moment, it doesn't seem to be very regular, but with only 3
>> weeks of operation, this may be a bit more predictable after more time
>> has elapsed.
>> I have been hearing VK3MY-3 from about 1200 to around 2200 local the
>> last few days. I have heard VK3MY-3 until midnight a couple of times
>> as well and sometimes appears earlier than noon.
>> Is Terry VK5ATN on HF full time? I did see him one afternoon, with
>> excellent signals, but have not heard from him, either before, or
>> after that one time.
>> VK4BBS-11 has been copied a few times at around 16.30 local, but I've
>> only seen VK4DMI-1 once when I was listening a couple of weeks back,
>> before I moved the Igate to UI-View.
>> It seems strange that 1) I hear VK4BBS-11 but not VK4DMI-1.
>> 2) I hear VK3MY-3 but not VK3BYD-(15?)
>> considering that the VK4 pair and the VK3 pair are a similar distance
>> and direction from Mildura.
>> Comments welcome.
> 1) Firstly, my station (VK5ATN), like the owner is a bit erratic in its
> appearance. I usually switch over to HF packet at about 1030 hours
> local. The station usually stays there until about 1600 hrs when I
> either turn off, or go to VHF packet. It's usually there most days;
> there have been exceptions - when I am not around the place, or as
> happened a cuppla days ago, I had a WinCrash 98 event which occupied my
> spare moments for most of the day. (It's back after reloading
> Windcra$h, but with a very loud protest from the on-board speaker when
> the windows screen first appears).
> My station is an older MFJ-1278 driving a TS-50 and the antenna is a
> dedicated mono band inverted V at about 40 feet at the apex. The
> station has no other function other than as listening and beacon device
> (very selfish).
> 2) I've been sharing the same puzzling questions about 10 MHz
> propagation. In my spasmodic observation of about 4 weeks, the most
> consistent station is VK3MY. It's there at all times and usually with a
> huge signal. Unfortunately, it doesn't seem to respond to ping
> requests, at least not in my experience, so I need to keep an eye on the
> S meter.
> VK3WRM/ECV has been there most of the time for the past two days Ron as
> VK3WRM. I did see you the one day as VK3ECV a week or so ago but there
> was a long period in between when nothing was seen.
I was using VK3ECV when I was mainly listenning/testing to find if I was
> Warren's mobile is there some days - nearly always about mid-day or an
> hour either side. We are coressponding about this from time to time.
> No sign of you either today or yesterday Warren ......
Still no sign of Warren here.
> The VK4 stations are there most days with VK4DMI getting the most of the
I now am rxing both VK4DMI-1 and VK4BBS-11 signals in the afternoon, and
occasionally in the morning.
> I have a S3 or 4 background noise level most of the time on 30 metres.
I have S3 sometimes..local...sounds like powerline insulator..a decent
drop of rain might fix it. :-) But the noise level sometimes drops to
nil, but then there is no packet heard either.
> I need to see what it's all about - I've a feeling the culprit is the
> computer I use for packet and APRS.
> It seems apparent that the biggest challenge is getting a good signal on
> air, and then having a good noise free receiving setup to make the most
> of it. I speculate whether a V on my larger tower - 60 feet is
> available - and it's further from the computer, would be worth the
> trouble. I doubt that I'll get the time or energy to do it - other
> projects demand priority - like getting HF going on the tractor for this
> years seeding operations.
IMHO the extra 20ft probably wouldn't really make a lot of difference.
> My honest appraisal of the situation at present is that despite the
> comparative ease with which I could get a tracker station on 30 metres
> once the HF tinyTrak module is out, I'm hard pressed to convince myself
> it's worth the trouble. I'll probably give it a try because I perceive
> that I'm somewhat unique in having the option of three gateway stations
> at a generous sample of distances from my area of operations. The
> experiment needs to be done. However, I'm not optimistic, given what
> I've seen so far. I speculate whether other bands might be better. I
> wonder whether compressed beacons stand a better chance of surviving the
> hazards of HF propagation and noise.
I'd think if I was heading "Outback" then it could be a useful tool.
> I'll continue to watch and put out a beacon every 30 minutes or so,
> however for various reasons you may not see much of me over the next
> three days or so. Other things will get in the way. Hopefully gliding
> will be one of them :-)
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