[OZAPRS] 9k6

hammil at optusnet.com.au hammil at optusnet.com.au
Fri Dec 1 08:43:18 AEDT 2017

Hi Andrew

I only have limited experience with APRS and am not that technical so I 
have been watching this thread with some interest.
With that said, I have found 30m APRS much more reliable than 40m. I 
originally tried using 40m APRS but the limited number of igates seemed 
to impede it somewhat, with most of my packets
being received by VK7RO.

I now run two 30m igates one in Sydney and one in Crookwell. The one in 
Sydney [VK2ZZM] is running with a wide band Codan 7004 [these old 
crystal locked receivers with their crystal ovens are very stable] with 
UZ7HO Soundmodem and
UI-view.  The one in Crookwell [VK2ZZM-5] is running a narrow band 7004 
with a Raspberry Pi and Dire wolf. Crookwell is at 1000 meters and very 
quiet compared to my Sydney set up however it suffers from
a slow 3G internet connection. This means that I can drive out the front 
gate at Crookwell and my APRS packet is gated by Bruce VK4MQ due to his 
fast internet connection.
At the moment Bruce is running two 30m igates using the same receiver 
VK4MQ-4 which is using UI-view and VK4MQ-5 that is running the Pi. The 
Pi is obliviously faster passing the packets to the internet.
Owen VK2OL also has two 30m igates at separate locations in Sydney, 
again one running Dire Wolf the other UI-view.

On Owens recent trip across Australia we found that, apart from WA, 30m 
APRS worked quite well.
A good number of Owen's packets went through igates in VK5.
The Manly Warringah Radio Society assisted Greg VK8MD to establish an 
30M igate in Alice Springs using a 7004 and Dire Wolf which helps cover 
central Australia.

Earlier this year I did a trip from Sydney to the Gold Coast running 
both VHF and HF APRS. Both performed well.

If you want reliable HF APRS I suggest, from my experience, 30m APRS is 
the way to go. With a good antenna and Tiny Track3 you will be off and 
running in no time.
The only major APRS setup problem I had was with RF feedback when I 
dedicated a Codan X2 as my APRS transmitter in place of my FT897.
I've up loaded a video of my APRS set up and part of Owens trip using HF 
APRS on youtube. Let me know if you would like the links.

Like most aspects of Amateur Radio APRS can be a little frustrating when 
you hit problems, but a lot of fun when you get it running.
I look forward to receiving some of your packets.


On 1/12/2017 1:52 AM, vk4tec at tech-software.net wrote:
> Forgot to edit IGATE.INI
> Was not passing anyting
> Andrew
> *From:*OZAPRS [mailto:ozaprs-bounces at aprs.net.au] *On Behalf Of 
> *vk4tec at tech-software.net
> *Sent:* Friday, 1 December 2017 12:46 AM
> *To:* 'Australian APRS Users' <ozaprs at aprs.net.au>
> *Cc:* 'Peter' <vk4khp at netspace.net.au>
> *Subject:* Re: [OZAPRS] 9k6
> Sorry UI-VIEW
> *From:*OZAPRS [mailto:ozaprs-bounces at aprs.net.au] *On Behalf Of *Scott 
> Evans
> *Sent:* Friday, 1 December 2017 12:44 AM
> *To:* Australian APRS Users <ozaprs at aprs.net.au 
> <mailto:ozaprs at aprs.net.au>>
> *Cc:* Peter <vk4khp at netspace.net.au <mailto:vk4khp at netspace.net.au>>
> *Subject:* Re: [OZAPRS] 9k6
> Andrew, what are you using for your igate software?
> On Fri., 1 Dec. 2017, 01:38 , <vk4tec at tech-software.net 
> <mailto:vk4tec at tech-software.net>> wrote:
>     I am testing 9k6 locally
>     Getting 100 % copy from ICOM 706 and TNC to THD72A
>     But I can seem to get it to gate Internet to RF
>     Have I missed something ?
>     I see p/VK coming in to me
>     Andrew
>     *From:*OZAPRS [mailto:ozaprs-bounces at aprs.net.au
>     <mailto:ozaprs-bounces at aprs.net.au>] *On Behalf Of *Scott Evans
>     *Sent:* Friday, 1 December 2017 12:31 AM
>     *To:* Australian APRS Users <ozaprs at aprs.net.au
>     <mailto:ozaprs at aprs.net.au>>
>     *Cc:* Peter <vk4khp at netspace.net.au <mailto:vk4khp at netspace.net.au>>
>     *Subject:* Re: [OZAPRS] HF Mobile XMAS
>     Gerard, don't forget that Lary VK5LY (SK) was also on 40m as well
>     as 30m (possibly 20m) and is a sadly missed station.
>     As 2IO would fade away 5LY would take over!
>     I'm ok to move over to 20m if worth it, otherwise I'll remain on 40m
>     I only transmit 25w on 40m and gate anything that I decode. Have
>     to admit that I haven't looked at the RF ligs in a long time!
>     On Thu., 30 Nov. 2017, 23:08 , <vk4tec at tech-software.net
>     <mailto:vk4tec at tech-software.net>> wrote:
>         Thank you for all your feedback
>         We tracked a mate from Brisabane to MLB and he backed off to
>         50 W on 10.147 MHz
>         I was blown away how reliable it was
>         Melbourne to Brisbane – wow
>         I have an antenna coming and tinytrak3
>         Will advise departure date and call
>         Will do some prelim tests
>         Andrew
>         *From:*OZAPRS [mailto:ozaprs-bounces at aprs.net.au
>         <mailto:ozaprs-bounces at aprs.net.au>] *On Behalf Of *Gerard Hill
>         *Sent:* Thursday, 30 November 2017 9:57 PM
>         *To:* Australian APRS Users <ozaprs at aprs.net.au
>         <mailto:ozaprs at aprs.net.au>>
>         *Subject:* Re: [OZAPRS] HF Mobile XMAS
>         The most recent list of HF IGates available is here on the
>         Wayback Machine:
>         https://web.archive.org/web/20161029215543/http://www.aprs.net.au/hf/hf-gateways/
>         <https://web.archive.org/web/20161029215543/http:/www.aprs.net.au/hf/hf-gateways/>
>         It's 15 months out of date now but better than what is
>         available on the official site:
>         http://www.aprs.net.au/hf/hf-gateways/
>         Unfortunately the official site can't be updated because it no
>         longer accepts logins. The site contains old (and misleading)
>         content ever since the site was lost and restored from a backup.
>         Sorry guys - I can no longer keep it up-to-date.
>         Anyway, there are no 20m IGates operating currently. Mine ran
>         from mid-2013 for a couple of years but now I just run 40m and 2m.
>         On 40m there is an IGate in Sydney and one in Hobart. All are
>         welcome to try 40m APRS.
>         Cheers,
>         Gerard - VK2IO
>         On 30 November 2017 at 18:52, Glen English VK1XX
>         <glenlist at pacificmedia.com.au
>         <mailto:glenlist at pacificmedia.com.au>> wrote:
>             7 MHz/ 10 MHz well ....horses /courses
>             if there is a base 1000 km away 10 MHz will be far daytime
>             superior.
>             Bases further away  mean lower ionospheric angles which
>             means the whole path and frequency selection become less
>             critical.  Well there is much more to it than that.
>             antenna efficiency on a car sort of goings according to
>             wavelength cubed... so 10 MHz is usually alot better...
>             lower noise on 10 MHz...
>             I will run some GRAFIX charts
>             is there a list of 7 amd 10 MHz IGATES around the country?
>             You might be better off for example with a 20m IGATE in NZ
>             in the daytime.
>             On 30/11/2017 5:11 PM, Andrew Rich wrote:
>                 Yes
>                 Sent from my iPhone
>                     On 30 Nov 2017, at 3:08 pm, Rodney Mitchell
>                     <Rodney at melecom.com.au
>                     <mailto:Rodney at melecom.com.au>> wrote:
>                      From experience, 10 MHz has greater reliability
>                     during the day, 73 Rod
>                     VK5KFB.
>                         There's also 7. 048,600MHz (1600/1800Hz) if
>                         you want
>                         On Thu., 30 Nov. 2017, 14:13 Andrew Rich,
>                         <vk4tec at tech-software.net
>                         <mailto:vk4tec at tech-software.net>>
>                         wrote:
>                             Hello
>                             I am planning to drive from Brisbane to
>                             Melbourne this December
>                             With HF APRS on board
>                             I think 10.147 MHz will be the go
>                             ICOM 706MKIIG
>                             Andrew

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