[OZAPRS] HF APRS site
rodney at melecom.com.au
Wed Feb 26 09:28:09 EST 2014
Good to 'see' you on the air.
Any news re the 23cm repeater? 73 Rod, VK5KFB.
> Thanks for the ideas, that is correct with the hf noise level I still have
> to have a listen. We are having a look at replacing the 160 m dipole to a
> set of four phased vertical as more and more telco gear is being
> installed and when they are working we have to make sure they have not
> damaged antennas like last time.
> As I said thanks for the ideas I wanted to know what the general thought
> of people was and this will guide me later on.
> Thanks for now
> Sent via morse code.
>> On 21 Feb 2014, at 10:03, "Tony Hunt" <wavetel at internode.on.net> wrote:
>> Hi Paul,
>> Ideally 30m is what you want to cover. Most HF APRS activity is on 30m .
>> Some of us have played about on 40 and 20m with mixed results. Although
>> some have done ok using DSP TNCs for receiving.
>> I tend to feel that you can put a lot of effort in setting up for 40 or
>> 20m and get little usage through it.
>> As you said noise thresholds are critical. I would have thought that the
>> WaterTower would have started to have issues on HF with this considering
>> all the gear up there now. My house used to be good for HF APRS but Ive
>> been invaded by next door neighbours and suburban development to the
>> point that 30m isnt real quiet any longer. I used to run a HF Gate here
>> but Ive found now that other operators are doing a better job than me
>> probably due to lower noise floors in rural areas.
>> As far as Gating it goes. Ideally Gating it direct onto the Internet is
>> far more desirable. You could use a Raspberry Pi or something to get it
>> into the Internet feed with APRX or similar.
>> Thats my take on that
>> Tony Hunt VK5AH
>> ----- Original Message -----
>>> Date: Thu, 20 Feb 2014 14:33:56 +1030
>>> From: Paul Mullins <pmullins at adam.com.au>
>>> To: ozaprs at aprs.net.au
>>> Subject: [OZAPRS] HF APRS site
>>> Message-ID: <53057EAC.2060406 at adam.com.au>
>>> Content-Type: text/plain; charset=ISO-8859-1; format=flowed
>>> Hello all,
>>> it has been a while for me to post anything useful but, currently we
>>> have a fill-in digi-peater in South Australia in Elizabeth, this is
>>> hosted by E.A.R.C ( Elizabeth Amateur Radio Club) of which I built and
>>> installed many years ago, this one is on VHF, I have been asked if I
>>> have thought about building a HF setup, this radio and modem wise is
>>> easy I have spares.
>>> Now with keeping it simple, we have been donated a surplus of old
>>> codans, of which I have electronic manuals and about 3 -4 MFJ-1270B
>>> modems left over, every buy and sell I buy them!
>>> I was thinking of setting up in the water tower at the clubs local site
>>> elevation is great, I have not done a site inspection for noise but
>>> will happen.
>>> I am thinking of setting up on one or two of these bands 40 m (7036
>>> or 20 m (14109 LSB).
>>> Now with the site if working is it a known correct way to treat the
>>> packets to fed them back onto the VHF network or send if back to the
>>> 'internet' via other means, this is the 'bit' I am asking for the dumb
>>> question, I want to set this up correctly and not upset anybody.
>>> The reason why 40m and 20m is that people with out advanced licensing
>>> can in fact get the packets in, currently I am one of these people with
>>> a standard license.
>>> I look forward to any ideas or comments.
>>> Cheers and 73s'
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