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Friendcom built a final batch of 400 or so FC-301/Ds a while back.
No idea how many are left, but AFAIK they're not going to make any
more.<br>
<br>
The 302s are nice - better heat dissipation, nicer case. Haven't
had much opportunity to really put them to use, though.<br>
<br>
Scott<br>
N1VG<br>
<br>
<div class="moz-cite-prefix">On 3/6/2017 6:19 PM, Brett Friermood
wrote:<br>
</div>
<blockquote
cite="mid:CADS0AtTncUiwiRrGHN-iDcGbnkHRTHAzythUTJRaMt1OLEPKGg@mail.gmail.com"
type="cite">
<div dir="ltr">I would not be putting them in as near an extreme
environment as Jason did, so I think they would actually be
worth trying. However this brings me back to my initial post, as
I am unable to find a reputable supply source. It appears the
FC-301/D and the FC-302 are still being manufactured. They both
appear on Friendcom's website along with other products, and the
company is planning on attending IWCE at the end of the month.
<div><br>
</div>
<div>I did stumble across the Ritron DTX+ series of telemetry
transceivers, which appears to be what I am looking for.
However they appear to be somewhat sensitive to releasing much
information. Most locations of information on their website
advises to contact them directly, even to find a dealer. On
the plus side, they appear to offer a 1.25m capable radio
which would be very helpful for a future project I have in
mind.</div>
<div><br>
</div>
<div>Brett KQ9N</div>
</div>
<div class="gmail_extra"><br>
<div class="gmail_quote">On Mon, Mar 6, 2017 at 6:46 PM, Fred
Hillhouse <span dir="ltr"><<a moz-do-not-send="true"
href="mailto:fmhillhouse@comcast.net" target="_blank">fmhillhouse@comcast.net</a>></span>
wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0
.8ex;border-left:1px #ccc solid;padding-left:1ex">As another
data point, there was a gentleman using one that had running
over two winters using a solar panel and battery only.<br>
<br>
Best regards,<br>
Fred N7FMH<br>
<div>
<div class="h5"><br>
<br>
-----Original Message-----<br>
From: aprssig [mailto:<a moz-do-not-send="true"
href="mailto:aprssig-bounces@tapr.org">aprssig-bounces@tapr.<wbr>org</a>]
On Behalf Of Jason KG4WSV<br>
Sent: Monday, March 06, 2017 11:22 AM<br>
To: Brett Friermood<br>
Cc: TAPR APRS Mailing List<br>
Subject: Re: [aprssig] Barebones "Data Radio"<br>
<br>
On Sun, Mar 5, 2017 at 1:51 PM, Brett Friermood <<a
moz-do-not-send="true"
href="mailto:brett.friermood@gmail.com">brett.friermood@gmail.com</a>>
wrote:<br>
> Thanks for the info Jason. I remember the
information I found was<br>
> somewhat limited, so it's nice to hear of some
real-world experience.<br>
> I'm guessing those issues may have contributed to
them being pulled.<br>
<br>
I think they got discontinued by the manufacturer, but I
may be misremembering that.<br>
<br>
I wouldn't hesitate to use one if the price was right
and it fit my application.<br>
<br>
High altitude balloon flights can be rather unforgiving
environments.<br>
You basically pull a vacuum on it, subject it to -40C or
lower temperatures, then return it to ground temperature
and humidity. If you happen to pass through humid air
on the way back down, you're sucking warm moist air
across frozen hardware and practically forcing maximum
condensation. We've had cases where we poured water out
of payload enclosures due to this effect. If this
happens to a PCB with sub-optimal cleaning and any sort
of activated or corrosive flux, the results are
unfortunate.<br>
<br>
<br>
> Are you running 9600bps with the HT's?<br>
<br>
Nope, we stuck with 1200 baud for tracking on those
projects.<br>
<br>
> There is also some experimenting I'd like to do
with the higher data rates of the Direwolf modem.<br>
<br>
I thought there was a UHF model, once upon a time? that
could be useful for even higher data rates.<br>
<br>
-Jason<br>
kg4wsv<br>
</div>
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