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<div class="moz-cite-prefix">About 4 years ago a bunch of us started
experimenting with <a href="http://wa8lmf.net/APRS_PSK63">PSK</a>
for APRS on HF. We used the <a
href="http://www.crosscountrywireless.net/aprs_messenger.htm">APRS
Messenger</a> software which supported a variety of speeds from
31 to 250 bps. It proved far superior to FSK300 packet. I ended up
running an IGate on 7034.7 kHz and a receive-only IGate on 10149.7
kHz. These PSK ports closed 2 years ago.<br>
<br>
APRS Messenger requires a PC running Windows and continues to be
developed so now supports <a
href="http://www.radio-electronics.com/info/rf-technology-design/pm-phase-modulation/what-is-gmsk-gaussian-minimum-shift-keying-tutorial.php">GMSK250</a>
and MFSK16 modes as well as PSK63 and PSK250. APRS messages
contain a checksum allowing posits to be verified before injection
into the APRS-IS. It is great software for the shack, not so
convenient in the mobile where a compact tracker is needed.<br>
<br>
Last year, the <a
href="http://www.ringolake.com/pic_proj/FT63/ft63_page.html">FreeTrak63</a>
was developed for mobile use. It can generate PSK63 and MFSK16.
Blank PCBs are available.<br>
<br>
Anyone interested in trying PSK63 for APRS?<br>
I'm running it on 10149.7 at the moment using VK2IO-63.<br>
<br>
Cheers,<br>
Gerard - VK2IO<br>
<br>
On 4/04/2014 8:00 AM, Andrew Rich wrote:<br>
</div>
<blockquote
cite="mid:8120BB83-23CE-4026-AF48-FD992903532B@tech-software.net"
type="cite">
<pre wrap="">Psk had very good noise performance
Psk63 is faster than psk31
No error check tho
Sent from my iPhone
</pre>
<blockquote type="cite">
<pre wrap="">On 4 Apr 2014, at 6:58 am, Matt VK2RQ <a class="moz-txt-link-rfc2396E" href="mailto:matt.vk2rq@gmail.com"><matt.vk2rq@gmail.com></a> wrote:
This is an interesting article on that topic:
<a class="moz-txt-link-freetext" href="http://wa8lmf.net/APRS_PSK63/">http://wa8lmf.net/APRS_PSK63/</a>
73,
Matt VK2RQ
</pre>
<blockquote type="cite">
<pre wrap="">On 4 Apr 2014, at 7:37 am, Shaun <a class="moz-txt-link-rfc2396E" href="mailto:vk2xpp@optusnet.com.au"><vk2xpp@optusnet.com.au></a> wrote:
What is the advantage of psk63?
Brief reply only from my iPhone
</pre>
<blockquote type="cite">
<pre wrap="">On 3 Apr 2014, at 17:56, Andrew Rich <a class="moz-txt-link-rfc2396E" href="mailto:vk4tec@tech-software.net"><vk4tec@tech-software.net></a> wrote:
Just got a icom 7000 and scs packet modem will see if it does psk63
Sent from my iPhone
</pre>
<blockquote type="cite">
<pre wrap="">On 3 Apr 2014, at 2:49 pm, Andy Nguyen <a class="moz-txt-link-rfc2396E" href="mailto:an@comms.net.au"><an@comms.net.au></a> wrote:
Thanks Mark,
Just checking :)
Regards
Andy VK3YT
</pre>
<blockquote type="cite">
<pre wrap="">On 3 Apr 2014, at 3:35 pm, Mark Jessop <a class="moz-txt-link-rfc2396E" href="mailto:lenniethelemming@gmail.com"><lenniethelemming@gmail.com></a> wrote:
Planning on a HF balloon payload there Andy?
And AFAIK there's no PSK capable iGates in Australia.
- Mark VK5QI
</pre>
<blockquote type="cite">
<pre wrap="">On 3/04/14 3:04 PM, Andy Nguyen wrote:
Hi all,
Do we have any iGate on HF (30m) in Australia that supports PSK63 ?
Regards
Andy
</pre>
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