<div>Not that I've used these modules.... but we are talking GPS data with a checksum on the end. It's repeating data and most devices will discard bad packets if the GPxxx checksum fails... and as Arlo Gutherie would say... you just "wait for it to come around on the guitar again." Still, for use in a small space such as an RV or car, looks fine to me.</div>
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<div>Wes<br><br></div>
<div class="gmail_quote">On Thu, Jun 12, 2008 at 10:11 PM, Jason KG4WSV <<a href="mailto:kg4wsv@gmail.com">kg4wsv@gmail.com</a>> wrote:<br>
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<div class="Ih2E3d">On Thu, Jun 12, 2008 at 9:00 PM, Wes Johnston, AI4PX <<a href="mailto:wes@ai4px.com">wes@ai4px.com</a>> wrote:<br>> Those look really slick.... $10 a pair... looks like the 315mhz models may<br>
> be the way to go... pretty far away from 70cm ham band and rx sensitivity is<br>> better than 433mhz.<br><br></div>The microcontroller guys that have used them complain about them being<br>error-prone, and needing to implement NRZI, checksums, etc for their<br>
applications. As an RS232 cable replacement, they may work as-is, but<br>then again there could be some differences in $5 an endpoint and $60<br>an endpoint for bluetooth. (:<br><br>There's an outfit (in Canada named Abacom, IIRC) that has an audio<br>
version of the 433MHz module, along with a 0.5W amplifier. I used it<br>with an early version SMT OT to make a really compact APRS tracker.<br>Unfortunately the SAW oscillator drifted horribly at high altitudes<br>and it was scrapped.<br>
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<div class="Wj3C7c"><br>-Jason<br>kg4wsv<br><br>_______________________________________________<br>aprssig mailing list<br><a href="mailto:aprssig@lists.tapr.org">aprssig@lists.tapr.org</a><br><a href="https://lists.tapr.org/cgi-bin/mailman/listinfo/aprssig" target="_blank">https://lists.tapr.org/cgi-bin/mailman/listinfo/aprssig</a><br>
</div></div></blockquote></div><br><br clear="all"><br>-- <br>Wes<br>---<br>Where there's silence, there is no Hope.