[aprssig] T3-9670 1-watt 70cm 9600 baud data radio - $72 pre-order price
scott at opentrac.org
Tue Oct 15 16:15:09 CDT 2013
In recent years a ton of low-cost high-speed radio modules have hit the
market, but until now there haven't been any that were compatible with
existing amateur modulation standards. I recently got my hands on some
new modules that I was able to get to work with standard 9600 baud G3RUH
gear. It took a bit of hacking, but the trickery is handled by a
modified Tracker3 processor that hides the details from the host and
works as a standard USB KISS TNC.
Right now we're at the prototype stage and there's still tuning and
polishing to be done, but everything's looking very good. My bench test
unit is happily talking to a TH-D7A at 9600 baud and if parts arrive in
time I'm hoping to fly a 9600 baud balloon payload by the end of the week.
It's a very small and simple device - just a USB connection, SMA jack
for an antenna, and a DC jack for optional external power if you want to
run it as a standalone digipeater. The prototype pictured looks a
little rough because the end panels are 3D printed. The final product
should have machined or stamped end panels.
I'm not sure how much interest there is in such a device, so I'm putting
it out there as a pre-order item so we can gauge how many we need to
produce in the first batch, whether it'll be worth stamping the parts,
and so on. Final price is likely to be a bit higher than the pre-order
price of $72. We should be shipping by the end of November, and maybe
even a bit sooner than that.
I'm planning to make this the first in a series of products that I'm
hoping will kick-start some higher speed, more advanced APRS networks.
You can place your pre-order here:
And if anyone has any ham gear that does higher than 9600 baud that
they'd like to lend me for compatibility testing, I'd be happy to try it
out. The modules will do at least 128 kbps talking to each other in
their native format, but G3RUH compatibility imposes some restrictions
and I'm not sure yet exactly how fast I'll be able to crank them up and
still stay compatible.
Thanks and 73,
Argent Data Systems
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