[OZAPRS] QRG drift HF APRS
Ray Wells
vk2tv at exemail.com.au
Sat Jul 2 08:35:06 EST 2011
Mike,
A query re the figures shown at http://aprs.fi/?c=raw&call=vk6uz-4
VK3MY-4 is shown with a figure of +78 which suggests he is higher in
frequency than a station shown as +50, for example.
How can this be so when VK3MY-4 is clearly displayed in a waterfall
display as being lower in frequency than almost every other station and
other contributors to this forum have made the same observation?
I know the figures are relative but that relativity suggests that, given
the number of stations shown as +50, those stations are on the correct
frequency and VK6UZ-4 is not.
I think we need to decide on a reference (net) station that is on
frequency and from that known reference, every station would be able to
use a waterfall display to net to the reference station. Those simple
steps would eliminate most of the frequency error related problems. In
fact, if one station was the standard, every other station could, by
using a waterfall display, become a pseudo sub-standard - a bit like
calibrating meters.
How many applications are out there with a waterfall display?
For Windoze I know of Digipan and WinMX and,
for Linux there is fldigi
There may be more applications for both operating systems but since I
haven't used Windoze for most things for some years I wouldn't know and
in Linux I've found something that does the job so why look any further?
Ray vk2tv
On 29/06/11 21:37, Mike Zwingl oe3mzc wrote:
> see how all stations on 10Mhz are drifting offset in QRG:
> http://aprs.fi/?c=raw&call=vk6uz-4 <http://aprs.fi/?c=raw&call=vk6uz-4>
> It is not the absolute but the relative value to each other that makes
> the problem in decoding hf-aprs sigs.
> (values after callsigns is given in Hz)
> 2011-06-29 11:24:57 UTC: *VK6UZ-4
> <http://aprs.fi/?c=raw&limit=&call=VK6UZ-4>*>APU25N,TCPIP*,qAC,T2AUST:=3211.17S/11604.17E&HF-IGATE
> 10147.6USB Perth
> 2011-06-29 11:29:01 UTC: *VK6UZ-4
> <http://aprs.fi/?c=raw&limit=&call=VK6UZ-4>*>APRS,TCPIP*,qAC,T2AUST:>dF
> (Hz): WIDE1 +100, VK2GKA-15 +50, VK7BW-15 +50, VK8ZAB-4 +25
> 2011-06-29 11:29:02 UTC: *VK6UZ-4
> <http://aprs.fi/?c=raw&limit=&call=VK6UZ-4>*>APRS,TCPIP*,qAC,T2AUST:>dF
> (Hz): VK4UN-4 +62, VK5ATN-15 +65, VK5LY-15 +43, VK4KWI-15 +75
> 2011-06-29 11:29:02 UTC: *VK6UZ-4
> <http://aprs.fi/?c=raw&limit=&call=VK6UZ-4>*>APRS,TCPIP*,qAC,T2AUST:>dF
> (Hz): VK2AJ-15 +50, KF7EU-6 +25, ZS6SS-3 +62, VK2TV-4 +143
> 2011-06-29 11:29:02 UTC: *VK6UZ-4
> <http://aprs.fi/?c=raw&limit=&call=VK6UZ-4>*>APRS,TCPIP*,qAC,T2AUST:>dF
> (Hz): VK3DHI-15 +68, VP8DEU +43, VK2DQC-15 +81, VK4DMI-4 +96
> 2011-06-29 11:29:02 UTC: *VK6UZ-4
> <http://aprs.fi/?c=raw&limit=&call=VK6UZ-4>*>APRS,TCPIP*,qAC,T2AUST:>dF
> (Hz): VK4HW-15 +46, VK4VP-15 +25, DL8RCB-3 +100, IW2GOB-10 +100
> 2011-06-29 11:29:02 UTC: *VK6UZ-4
> <http://aprs.fi/?c=raw&limit=&call=VK6UZ-4>*>APRS,TCPIP*,qAC,T2AUST:>dF
> (Hz): VK4KMR-15 +46, F5LDS-4 +112, VK2SX-15 +50, LA4FPA-15 +87
> 2011-06-29 11:29:02 UTC: *VK6UZ-4
> <http://aprs.fi/?c=raw&limit=&call=VK6UZ-4>*>APRS,TCPIP*,qAC,T2AUST:>dF
> (Hz): VK7DIK-4 +40, VK3MY-4 +65, VK3BZQ-9 +37, VK5LY-4 +43
> 2011-06-29 11:29:02 UTC: *VK6UZ-4
> <http://aprs.fi/?c=raw&limit=&call=VK6UZ-4>*>APRS,TCPIP*,qAC,T2AUST:>dF
> (Hz): VK4UN-15 +43, VK8LM +50, VK5LY-6 +50, VK3BDG-9 -18
>
> ----- Original Message -----
> *From:* Michael Wain <mailto:vk3hau at bigpond.net.au>
> *To:* Australian APRS Users <mailto:ozaprs at aprs.net.au>
> *Sent:* Thursday, April 28, 2011 2:01 AM
> *Subject:* Re: [OZAPRS] HF APRS with an FT 857D and Kantronics KP3
>
> G'day Russ,
>
> Thanks for the reply, I've been meaning to set up a buy / sell page
> on the web site, just hav'nt had time, but any way I'll asks arould
> for you.
>
> P.S. I also have a web site at vk3hau.com <http://vk3hau.com> but
> the info is a bit old now.
>
>
> Yours sincerely
>
> Michael Wain - VK3HAU
>
> EGARC Inc. Publicity Officer. Ph: 613 - 51411650
>
> On 28/04/2011, at 0:06, "Russell" <ashdown at hunterlink.net.au
> <mailto:ashdown at hunterlink.net.au>> wrote:
>
>> Hi Michael,
>> Had a look at your club site.....pretty good.
>> If you or the club has a KP3 spare I would like to buy it and put
>> it in service as a digi in our area.
>> Russ
>> VK2VK
>> /-------Original Message-------/
>> /*From:*/ Michael Wain <mailto:vk3hau at bigpond.net.au>
>> /*Date:*/ 27/04/2011 23:32:57
>> /*To:*/ Australian APRS Users <mailto:ozaprs at aprs.net.au>
>> /*Subject:*/ Re: [OZAPRS] HF APRS with an FT 857D and Kantronics KP3
>> The only work out my KPC-3 gets nowa days is beaconing my weather
>> station from the ui-view32 software, cost me nearly $300 back in
>> the day of packet 16 years ago, and it got a lot of work, but now,
>> just seats in the corner of the shack tx every 30 mins, I have
>> always wanted to setup a Igate on hf ( 40mtrs ), oh well, one day
>> maybe if the wife is not looking at the bank account I mite look
>> at the KAM.
>> Yours sincerely
>>
>>
>> Michael Wain - VK3HAU
>>
>>
>> EGARC Inc. Publicity Officer.
>>
>> Ph : 613 - 51411650
>> Email - <mailto:vk3hau at vk3egc.org>vk3hau at vk3egc.org
>> <mailto:vk3hau at vk3egc.org>
>> Web - http://www.vk3egc.org <http://www.vk3egc.org/>
>>
>> <macbean tartan - sheld1.jpg>< a>
>>
>>
>> ----- Original Message -----
>> *From:* Russell <mailto:ashdown at hunterlink.net.au>
>> *To:* Australian APRS Users <mailto:ozaprs at aprs.net.au>
>> *Sent:* Wednesday, April 27, 2011 9:46 PM
>> *Subject:* Re: [OZAPRS] HF APRS with an FT 857D and Kantronics KP3
>>
>> Hi Shaun,
>> I've been running a Kantronics KP3 ($80 on VKHAM) with a IC2820 at
>> my shack for about three month now and it works a treat, VK2VK-5. (2M)
>> Software is Ui-View and running KISS on the KP3
>> I have just landed a *Kantronics All mode "KAM"* (runs HF and VHF)
>> from UK for $120 AU.
>> Hoping to be on HF within the week if work allows. I also have a
>> FT-857D that I hope to run my HF Igate on.
>> If I can be of any assistance give me a yell.
>> For your info.
>> Regards
>> Russ
>> VK2VK-5 Central Coast Igate
>> /-------Original Message-------/
>> /*From:*/ Shaun <mailto:shaunbaby at optusnet.com.au>
>> /*Date:*/ 27/04/2011 09:30:32
>> /*To:*/ Australian APRS Users <mailto:ozaprs at aprs.net.au>
>> /*Subject:*/ Re: [OZAPRS] HF APRS with an FT 857D and Kantronics KP3
>> OK, I set the TNC back to 2m 1200 settings and all working fine,
>> so it would
>> appear the 200 vs 800hz was the issue. Silly that Kantronics
>> didn't address
>> the issue rather than just telling you it won't work.
>> I set my symbol to a bike as I had never really worked out how to
>> do that part
>> or the set up although for today I think I should change it to a
>> boat with
>> this rain!
>> And for the info of the APRS.net.au <http://APRS.net.au> people
>> this link is broken in the
>> configurations page:
>> <http://web.ew.usna.edu/~bruninga/aprs/symbolsX.txt>http://web.ew.usna.edu/~bruninga/aprs/symbolsX.txt
>> Once again, thanks for all your help. Even though it didn't work I
>> now have a
>> better understanding of this part of our hobby.
>> 73
>> Shaun VK2XPP-9
>> On Wed, 27 Apr 2011 05:43:28 Shaun wrote:
>> > Thanks Terry,
>> >
>> > This explains a lot, and although not the outcome I was looking
>> for, your
>> > help has saved me a lot of time.
>> >
>> > Anyone got a cheep 300 baud 200 hz modem going?
>> >
>> > Thanks to all that contributed.
>> >
>> > 73
>> >
>> > Shaun VK2XPP-9 for now.
>> >
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