[OZAPRS] Re: [ZLAPRS] HF operational

[Mike Zwingl oe3mzc]

Hi all, interested in HF-APRS,
it is important to note that the tones used are most important in conjunction with dial frequency setting.
so 10151kHz LSB is only correct when you use 1600/1800Hz tones,
same for 10147,6kHz USB with 1600/1800Hz Standard tones !!!
>From my knowledge PK232 uses much higher tones (2125Hz) which would require some adjustment in dial qrg in order to compensate for the offset. Main reason is, that most soundcards or tnc decoders only have a decode window of 30Hz (!!)

There is only one product for HF-APRS that allows frequency drift of more than 800Hz,
that is a DSP-TNC from company SCS.
For serious HF-APRS gateway use I can recommend to use a DSP-TNC.
see www.scs-ptc.com/datasheets/scs_datasheet_tracker_english.pdf

This tnc can also be used as stand alone tracker and will display and transmit all measured frequency deviations for each station heard in a regular dF(Hz) beacon.
see: http://aprs.fi/?c=raw&call=OE3MZC-4
or http://aprs.fi/?c=raw&call=oe3xur-4

vy 73 de Mike
oe3mzc/Vk3FPF

  ----- Original Message ----- 
  From: Phillip 
  To: ZLAPRS at yahoogroups.com 
  Sent: Sunday, March 23, 2008 8:28 AM
  Subject: Re: [ZLAPRS] HF operational


        Hi Mike,
                      You will need an HF Receiver with either a TNC that can decode 300 baud or if you have AGWPE  a sound card  and 
        Beacon every every 32 minutes as of 20.21

        I am currently hearing VK3MY-4 and VK4HW-4  when conditions allow @ 20.02  and 20.07 hrs

        73 Phillip 
        ZL2TZE




        -------Original Message-------

        From: zl2cc
        Date: 23/03/2008 6:58:18 p.m.
        To: ZLAPRS at yahoogroups.com
        Subject: Re: [ZLAPRS] HF operational

        what programme should I use to listen Phillip?
        Mike S Mather
        zl2cc at xtra.co.nz
        06 8623977
        ----- Original Message ----- 
        From: Phillip 
        To: zlaprs at yahoogroups.com 
        Sent: Sunday, March 23, 2008 1:45 AM
        Subject: [ZLAPRS] HF operational


        Hi All,
        I have now managed to spend some time on my HF station and I have
        a port on 10.147.60 USB pk232 tones via the soundcard

        Be interested to hear any reports good or bad has been tested across town so
        any reports when conditions allow appreciated.

        73 Phillip
        ZL2TZE

        I 





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