[OZAPRS] 10MHz HF Gateway -Re: New to list

Andrew McDade amcdade at iprimus.com.au
Fri Aug 31 08:17:16 EST 2007


Hi All,

I must concur with Andrew Rich. I've been using a IC706Mk2G mobile on 30m 
now for 4 or 5 years. The 30m aprs frequency was programmed into memory
and 
netted to vk3my "once" back 4 or 5 years ago. With all the bush bashing 
around Australia over this time, I've never had to re-net to vk3my. It 
certainly says something about the stability of modern transceivers.

Regards .. Anndrew #2 .. VK5EX

----- Original Message ----- 
From: "Andrew Rich" <vk4tec at people.net.au>
To: "Mike Zwingl oe3mzc" <oe3mzc at oevsv.at>; "VK / ZL APRS Users" 
<ozaprs at aprs.net.au>
Sent: Friday, August 31, 2007 5:28 AM
Subject: Re: [OZAPRS] 10MHz HF Gateway -Re: New to list


>I bought a new radio - it no drift
>
>
>
>
--------------------------------------------------------------------------
--
> Andrew Rich VK4TEC
> vk4tec at people.net.au <mailto:vk4tec at people.net.au>
> http://www.tech-software.net
>
>
>
>
> -----Original Message-----
> From: ozaprs-bounces at aprs.net.au [mailto:ozaprs-bounces at aprs.net.au]On
> Behalf Of Mike Zwingl oe3mzc
> Sent: Friday, 31 August 2007 5:52 AM
> To: VK / ZL APRS Users
> Subject: [OZAPRS] 10MHz HF Gateway -Re: New to list
>
>
> Gday,
> just one comment on HF-APRS Gateway operation:
> in practice it is not the signal to noise ratio that decides about
decode 
> or
> nodecode of an APRS beacon on 10Mhz.
> More important is to use a TNC that allows some frequency drift, like
the
> DSP-TNC from SCS.
> The DSP-TNC is currently the only hardware that will simultaneously
decode
> several APRS signals at same time in a 800Hz wide channel!
> So the frequency offset of a mobile station can be plus/minus 400Hz and
> still have successful decode on 10.147,6 USB (10151LSB)
> See the result at VK6UZ-4 and VK8ZAB-4, Fritz and Alan are using these 
> TNCs.
> Most other TNCs/Soundcards require 30Hz accuracy in frequency, which is
> almost impossible to achive.
> www.scs-ptc.com/datasheets/scs_datasheet_tracker_english.pdf
> vy 73 de Mike
> oe3mzc
> ex VK3FPF/8
> ----- Original Message -----
> From: "Ray Wells" <vk2tv at exemail.com.au>
> To: "VK / ZL APRS Users" <ozaprs at aprs.net.au>
> Sent: Tuesday, July 17, 2007 10:48 AM
> Subject: Re: [OZAPRS] New to list
>
>
>> Hi Michael,
>>
>> Based on experience gained from forwarding into vk3 and eastern vk5 on
>> 30m, I appeared to be well placed to be a HF gate, especially for those
>> areas. Both of those areas were open into here for at least 20 hours a
>> day, and with solid results.
>>
>> I use UIView on the Windoze machine but I have to say that Xastir walks
>> all over it, in my opinion, but I am biased towards Linux's flexibility
>> and reliability.
>>
>> I'm very lucky with this rural location. Noise level on HF is usually
>> S0, excluding lightning type noises.
>>
>> Cheers
>> Ray vk2tv
>>
>>>Hi Ray,
>>>Welcome, I did some tests on HF last night and see your station gated
me
>>>to the 'net!
>>>It's good to have another HF APRS gateway up and running. When I get
>>>motivated, I'm going to set one up near Port Lincoln. I have all the
>>>gear, I just need a couple of weekends to get it installed.
>>>Mine gateway will be around 10km out of town on a friends farm, RX
only,
>>>using a Codan X2 on 10.147.6MHz with a  MFJ-1278 TNC, and serial
>>>ethernet server linked back my my QTH via a community wireless network.
>>>Probably going to use UIView at this stage.
>>>HF is far too noisy at home.
>>>Regards,
>>>Michael.
>>>VK5ZEA
>>>
>>>Ray Wells wrote:
>>>
>>>
>>>>Hi All,
>>>>
>>>>I'm new to this list and want to advise that I recently commenced
>>>>running a HF gateway from near Kempsey NSW, halfway between Brisbane
and
>>>>Sydney, on 10147.60. The rig is a TS430 running about 25W to a dipole
>>>>favouring about WSW/ENE. Callsign is vk2tv-4.
>>>>
>>>>Close to being implemented is a 2m digi on 145.175 that will also be
>>>>gated to the network, and will cover a stretch of the Pacific Highway
>>>>from about 40km south of Kempsey to a point about 30km north.
>>>>
>>>>Ray .. vk2tv
>>>>
>>>>
>>>>_______________________________________________
>>>>Ozaprs mailing list
>>>>Ozaprs at aprs.net.au
>>>>http://aprs.net.au/mailman/listinfo/ozaprs
>>>>
>>>>
>>>>
>>>>
>>>_______________________________________________
>>>Ozaprs mailing list
>>>Ozaprs at aprs.net.au
>>>http://aprs.net.au/mailman/listinfo/ozaprs
>>>
>>>
>>>
>>
>> _______________________________________________
>> Ozaprs mailing list
>> Ozaprs at aprs.net.au
>> http://aprs.net.au/mailman/listinfo/ozaprs
>
> _______________________________________________
> Ozaprs mailing list
> Ozaprs at aprs.net.au
> http://aprs.net.au/mailman/listinfo/ozaprs
>
> No virus found in this incoming message.
> Checked by AVG Free Edition.
> Version: 7.5.484 / Virus Database: 269.12.12/979 - Release Date: 
> 29/08/2007
> 8:21 PM
>
> No virus found in this outgoing message.
> Checked by AVG Free Edition.
> Version: 7.5.484 / Virus Database: 269.12.12/979 - Release Date: 
> 29/08/2007
> 8:21 PM
>
> _______________________________________________
> Ozaprs mailing list
> Ozaprs at aprs.net.au
> http://aprs.net.au/mailman/listinfo/ozaprs
>
>
> -- 
> No virus found in this incoming message.
> Checked by AVG Free Edition.
> Version: 7.5.484 / Virus Database: 269.12.12/979 - Release Date:
8/29/2007 
> 8:21 PM
>
> 
_______________________________________________
Ozaprs mailing list
Ozaprs at aprs.net.au
http://aprs.net.au/mailman/listinfo/ozaprs



More information about the Ozaprs mailing list