[Vk1tac] Ref all the changes
Bell, Paul
vk1tac@happy.emu.id.au
Tue, 10 Jun 2003 12:01:33 +1000
Good point Dik,
However, it would be should be possible to co-site the 2m beacon
(144.410 MHz very narrow band transmission and horizontally polarised)
with the 144.800 MHz packet using only a few cavities as the two
services will be on separate antenna feeds anyway, and the beacon won't
have a receiver to protect from Tx noise emmitted by the packet device.
The same applies to the 432 MHz beacon plus the fact that for now at
least, there is over 2 MHz separation between the beacon Txer and the
packet Rxer on 434.550 MHz. However, should we ever have a radical
change in the 70 cm band plan with the adoption of a 5.4 MHz split along
with a band reduced to 10 MHz wide then we would need to insert a few
cans to keep the beacon out of the packet Rxer. Once again however, the
two services would be on separate antenna feeds and be cross polarised.
Good antenna isolation should be relatively easy to achieve at Bulls
Head as the beacon aerials would be on the tower top for omni
directional coverage whereas the other services will have side mounting
dipole arrays on the eastern tower face.
More food for thought.
Regards,
Paul VK1BX.
-----Original Message-----
From: Richard.Elliott@dfat.gov.au [mailto:Richard.Elliott@dfat.gov.au]
Sent: Tuesday, 10 June 2003 10:41 AM
To: vk1tac@happy.emu.id.au
Subject: Re: [Vk1tac] Ref all the changes
Another minor thought is that Bulls Head was suggested as a
possible/useful beacon site so freq allocations shouldn't exclude
transmitters on 144.410, 432.410 and 1296.410 (without needing the jam
factory!) 73's dik
Richard Elliott - ICON Project Manager
Ph 6261 2842 - Fax 6261 1100
Paul F Bell
<blakenbell@bigpo To:
vk1tac@happy.emu.id.au
nd.com> cc:
Sent by: Subject: Re: [Vk1tac]
Ref all the changes
vk1tac-admin@happ
y.emu.id.au
09/06/2003 05:57
PM
Please respond to
vk1tac
Hi Phil, and everyone else,
Thanks for the info regarding the APRS structure.
I've no idea what's happening regarding "Standard" packet, whatever
standard packet is these days,1200, 4800 or 9600 baud. However, 144.800
MHz will not co-site with 145.175 MHz without more cans than a jam
factory so that rules out Black Mountain Tower, even if our benefactor
allows us to put yet another installation there. We did seek permission
didn't we?
That only leaves Bulls Head or Black Hill if we are to use existing
Divisional sites. Bulls Head is easy access but has some licencing
issues to resolve whereas Black Hill will require some delicate
negotiations. We may have a trump card to play in any negotiations for
Black Hill in that I believe the packet people at Tid. are desirous of a
packet installation on the Hill. It may be plausible to negotiate to
co-site the LIPD spectrum 439.550 / 434.550 MHz repeater with the
144.800 MHz unit which would make for a nice arrangement. The only
ongoing problem with Black Hill is site access for maintenance purposes.
Bulls Head wins hands down here. My vote would be to get a licence for
Bulls Head and stick everything there.
Any body else have any thoughts on the matter?
Regards,
Paul.
----- Original Message -----
From: Phil Longworth
To: vk1tac@happy.emu.id.au
Sent: Sunday, June 08, 2003 12:03 PM
Subject: Re: [Vk1tac] Ref all the changes
Paul, (and others)
as far as I can make out, this is what will be happening APRS wise.....
Mt Ginini will become the WIDE (need VK1RGI Licence to have
"145.1750000
MHz 16K0F2D" added
(and Remove.... 144.8000000 MHz - 16K0F2D, 439.5500000 MHz - 16K0F2D,
434.5500000 MHz - 16K0F2D ?)
Black Mountain will become a RELAY (no additions needed for Licence as
APRS is already licensed)
I am not sure what is to happen with "Standard" packet, there is some
talk of it going to Black Mountain, and some of it going to Bulls Head
!
If going to Bulls Head then there are licensing issues (As we don't
actually have a licence for Bulls Head, only for the "Portable" WICEN
repeater !), and if at Black Mountain there are antenna combiner issues
!
Can anyone tell me what we are doing with Packet so the licensing side
can be commenced ?
cheers....
Phil.
----- Original Message -----
From: Paul Elliot
To: vk1tac@happy.emu.id.au
Sent: Wednesday, June 04, 2003 10:12 AM
Subject: Re: [Vk1tac] Ref all the changes
When the new Wide goes into Ginnini, will VK1RBM stay as a wide or
will
it be changed to a relay?
----- Original Message -----
From: "Peter Westerhof" <vk1npw@netspace.net.au>
Date: Tuesday, June 3, 2003 8:53 pm
Subject: [Vk1tac] Ref all the changes
> G'day all, as far as I know VK1RBM APRS WIDE will stay in place
> and a new WIDE will be put on Mt Ginini. Just waiting for Xtals
> for the 815 that Paul (1BX) has and all is done.
>
>
> Peter
> VK1NPW
>
>
> ---
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