[OZAPRS] QRG drift HF APRS

Ray Wells vk2tv at exemail.com.au
Sat Jul 2 09:02:25 EST 2011


Thanks Mark,

It's very Irish!!

Ray vk2tv

On 02/07/11 08:53, Mark Austin wrote:
> G'Day Ray,
> Have a look at
> http://lists.aprs.net.au/pipermail/ozaprs/2010-May/009291.html
> the +78 means VK3MY needs to come up 78Hz to zero beat with VK6UZ-4, not
> that he is 78Hz high
> Regards,
> Mark
>
> On Sat, Jul 2, 2011 at 8:35 AM, Ray Wells <vk2tv at exemail.com.au
> <mailto:vk2tv at exemail.com.au>> wrote:
>
>     Mike,
>
>     A query re the figures shown at http://aprs.fi/?c=raw&call=__vk6uz-4
>     <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>
>         <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
>         <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
>         <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
>         <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
>         <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
>         <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
>         <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
>         <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
>         <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
>         <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
>         <mailto:vk3hau at bigpond.net.au>>
>             *To:* Australian APRS Users <mailto:ozaprs at aprs.net.au
>         <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> <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>
>         <mailto: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
>             <mailto:vk3hau at bigpond.net.au>>
>                 /*Date:*/ 27/04/2011 23:32:57
>                 /*To:*/ Australian APRS Users <mailto:ozaprs at aprs.net.au
>             <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
>             <mailto:vk3hau at vk3egc.org>>vk3h__au at vk3egc.org
>             <mailto:vk3hau at vk3egc.org>
>             <mailto: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
>             <mailto:ashdown at hunterlink.net.au>>
>                 *To:* Australian APRS Users <mailto:ozaprs at aprs.net.au
>             <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
>             <mailto:shaunbaby at optusnet.com.au>>
>                 /*Date:*/ 27/04/2011 09:30:32
>                 /*To:*/ Australian APRS Users <mailto:ozaprs at aprs.net.au
>             <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>
>             <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/%7Ebruninga/aprs/symbolsX.txt>>htt__p://web.ew.usna.edu/~bruninga/__aprs/symbolsX.txt
>             <http://web.ew.usna.edu/%7Ebruninga/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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