[OZAPRS] 6m APRS

Fri Aug 28 17:58:40 EST 2009

Hi RAY,
Guess wot.. Ive got a 6m fm828 here  that i used to use on the taree
newcastle paket link..rocked up and ready to roll...Its yours if you want..
and a spare set of matching rocks for the second radio i never got round to 
doing.
cant rember the freq   but wot the hell eh .....
cheers      johnno    vk2khz  gloucester   ex   vk2zmk....
----- Original Message ----- 
From: "VK2KFJ" <vk2kfj at yahoo.com.au>
To: "Australian APRS Users" <ozaprs at aprs.net.au>
Sent: Friday, August 28, 2009 4:22 PM
Subject: Re: [OZAPRS] 6m APRS

Ray,

your comment about 6m noise when mobile,

much better now days compared to 20 years ago, especially when Telstra &
Optus rolled out the broadband cables strung from poles, our neighbourhood 
was shocking, but I have noticed in recent times much better for 6m mobile,
presumably they dumping older services for new services further up the 
spectrum.  And I don't notice birdies from traffic light boxes anymore 
either, I suspect modern CPU based equipment running at much higher base 
clock freqs.

Yes, plenty old commercial gear to mod for 6metres , makes a good choice for 
dedicating boxes for APRS beaconing.

Yeh, some 6m APRS beacons/digis/iGates  in strategic places in VK, ZL and 
Pacific locations, ie FK8, YJ8, P29, VK9L, VK9N  would be great.

Steve VK2KFJ, QF56og
Blog:  http://vk2kfj.blogspot.com
Web:  http://www.qsl.net/vk2kfj/

--- On Fri, 28/8/09, Ray Wells <vk2tv at exemail.com.au> wrote:

> From: Ray Wells <vk2tv at exemail.com.au>
> Subject: Re: [OZAPRS] 6m APRS
> To: "Australian APRS Users" <ozaprs at aprs.net.au>
> Received: Friday, 28 August, 2009, 3:18 PM
> Propagation was one thing I had in
> mind.
>
> I had both 2m FM and 6m FM mobile in and around
> Sydney/Central Coast
> (and later Kempsey) for 25+ years. I diplexed to a 2m 5/8
> roof-mounted
> (later guard-mounted on a Landcruiser) whip. I found that
> although 6m
> had the potential for greater reach than 2m it often wasn't
> realised
> because of increased noise levels. My home station also had
> both 2m and
> 6m and could be cross-banded, so I could drive around and
> "talk" to
> myself. It was a good way to compare bands. I feel that 6m
> has unused
> potential but I guess it's popularity wained through a lack
> of
> commercial equipment for the band, compared with 2m.
> Placing land
> mobiles onto 2m was more often than not just a simple
> retune. For 6m it
> was sometimes a major rebuild of rx front-ends and tx
> finals. Certainly
> that was the case for the old AWA 25m. Converting the Tait
> T500 to 6m is
> much simpler, requiring some additional C for rx front-end
> and an
> additional slug in the VCO coil. The Tait was a dream to
> align. The
> Midland 70-050 has A, B & C versions and the handbook
> lists the
> components to be changed for band variations. Mine was
> originally on
> 40MHz. It also was easy to align. I wouldn't contemplate an
> FM900, even
> though others have had success. I did modify an old
> Communico but that
> was almost a rebuild of rx front-end and PA.
>
> Comparing band plans between ZL and Oz, it seems that we
> both have a
> segment above 53.000 MHz so 53.000 up to 53.100 should be
> feasible.
> Perhaps Philip would like to comment from a ZL
> perspective.
>
> I agree that a common trans-Tasman frequency would be
> ideal.
>
> Looks like I'd better re-build my old 6m Ringo.
>
> Ray vk2tv
>
> VK2KFJ wrote:
> > Interesting,
> > 6m would be nice from a propagation study perspective,
> for looking for 6m openings, just as you can do now for 2m
> propagation by having a packet Rcv program monitoring
> 145.175 (a 'Heard' list) I have done before, very
> useful, but APRS on 6m would provide the same tool for
> monitoring 6m propagation. APRS is the perfect mechanism.
> >
> > With 6m beacons, they only useful if you sitting in
> front of a rcvr constantly tuning around looking for
> beacons, if you not monitoring, you don't know what you
> missed.
> >
> > For mobile APRS, 6m certainly a better option in
> places like Sydney than using 2m or 70cm, 6m refracts over
> hilltops, around hills, better than 2m & higher,
> obviously 6m not as good as HF, but HF not convenient in
> metro areas like Sydney.
> >
> > Whereas a fulltime, complete set of APRS nodes widely
> scattered provides:
> > 1. another APRS facility to spread the load.
> > 2. a 6m propagation path prediction service.
> > 3. some actual usage on 53 Mhz !!!!
> >
> > Better to use one of the existing designated 6m packet
> freqs like 53.000 (or whatever it is)
> > as I doubt anyone does anything on 6m FM with packet
> anymore.
> >
> > But worth consulting the ZL's etc, nice to have a
> common 6m APRS freq for Oceania region.
> >
> >
> > Steve VK2KFJ, QF56og
> > Blog: http://vk2kfj.blogspot.com
> > Web: http://www.qsl.net/vk2kfj/
> >
> >
> > --- On Fri, 28/8/09, Gerard Hill <vk2io at amsat.org>
> wrote:
> >
> >
> >> From: Gerard Hill <vk2io at amsat.org>
> >> Subject: Re: [OZAPRS] 6m APRS
> >> To: "Ray Wells" <vk2tv at exemail.com.au>
> >> Cc: "Australian APRS Users" <ozaprs at aprs.net.au>
> >> Received: Friday, 28 August, 2009, 2:02 AM
> >> Ray Wells wrote:
> >>
> >>> C'mon, I was pushing 30 when you were in the
> Youth
> >>>
> >> Radio Scheme with Gordon Proctor. Now that's going
> back in
> >> time.
> >>
> >> Good memory!
> >>
> >>
> >>> Age is only a number, until your knees remind
> you
> >>>
> >> otherwise.
> >>
> >> And they do sometimes, so I know what you mean :(
> >>
> >>
> >>> The CCARC never did get 6m packet going but I
> think
> >>>
> >> there's some recent progress with their 6m voice
> repeater.
> >>
> >> OK - probably a bit late now for a 6m packet
> repeater,
> >> unless its APRS.
> >>
> >>
> >>> Ray vk2tv
> >>>
> >> Cheers ... Gerard
> >>
> >>
> >>> Gerard Hill wrote:
> >>>
> >>>> Ray Wells wrote:
> >>>>
> >>>>> Gerard,
> >>>>>
> >>>>> You have the advantage of youth :-)
> >>>>>
>
> >>>> 30 years ago, I would have agreed with you
> :)
> >>>>
> >>>>
> >>>>> I said I was in a senior moment, but
> >>>>> I can't remember if I enjoyed it.
> >>>>>
>
> >>>>> Somewhere in the back of my mind I
> have this
> >>>>>
>
> >> thought that VK2DOT is doing something on or
> around 53.000
> >> for conventional packet. Are you in contact with
> Rod?
> >>
> >>>> Yes - even on packet ;-) Not sure that he
> has 6m
> >>>>
> >> running still as only one 70cm radio port is
> showing up on
> >> XRouter. VK2RAG was allocated 53.000 - did it ever
> operate?
> >>
> >>>> I ran a 53.050 BBS/node port for some time
> but
> >>>>
> >> there was limited interest. There was more
> interest in using
> >> 53.100 at that time.
> >>
> >>>>> Ray vk2tv
> >>>>>
>
> >>>> Cheers ... Gerard
> >>>>
> >>>>
> >>>>> Gerard Hill wrote:
> >>>>>
>
> >>>>>> 50.2930 is in the beacons band
> 50.280 to
> >>>>>>
>
> >> 50.320.
> >>
> >>>>>> <http://www.wia.org.au/members/bandplans/data/documents/Australian%20Band%20Plans%20090724.pdf>
> >>>>>>
>
> >>>>>> In the past there has been
> discussion of
> >>>>>>
>
> >> APRS on 53.100 MHz. Perhaps there's a repeater in
> VK3
> >> operating there. Last year you suggested 53.000
> MHz, Ray.
> >>
> >>>>>> Cheers ... Gerard
> >>>>>>
> >>>>>> David and Justine Olsen wrote:
> >>>>>>
> >>>>>>
>
> >>>>>>> Dial 50.2930
> >>>>>>>
> >>>>>>>
> >>>>>>> On 27 Aug 2009, at 15:30, Ray
> Wells
> >>>>>>>
>
> >> wrote:
> >>
> >>>>>>>
> >>>>>>>
>
> >>>>>>>> Hi All,
> >>>>>>>>
> >>>>>>>> There's considerable
> discussion on
> >>>>>>>>
>
> >> the TAPR APRS mailing list about 6m APRS.
> >>
> >>>>>>>> I vaguely recall
> discussion on
> >>>>>>>>
>
> >> this locally in the recent past but my
> >>
> >>>>>>>> current senior moment has
> denied
> >>>>>>>>
>
> >> me more detail.
> >>
> >>>>>>>> Is there a 6m APRS
> frequency in
> >>>>>>>>
>
> >> Oz? I'd be happy to establish such a
> >>
> >>>>>>>> port if I wasn't going to
> be a
> >>>>>>>>
>
> >> network of one station.
> >>
> >>>>>>>> Any thoughts on this?
> >>>>>>>>
> >>>>>>>> Ray vk2tv
> >>>>>>>>
>
> >>>
> >>
> ------------------------------------------------------------------------
> >>
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> >>
> >>
> >
> >
> >
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