[aprssig] E Coast 9600 baud backbone 15W radios (firmware?).

Kenneth Finnegan kennethfinnegan2007 at gmail.com
Wed Jun 1 16:04:05 CDT 2016


I'm still a bit unclear; why are you trying to homebrew data radios with
out-of-band PAs when you can get 25W UHF CDM1250s on eBay for less than
$100 a piece? I've been converting all my packet stations over to
CDM750/CDM1250s; the standard Motorola 16 pin IO connector is fantastic for
packet.

--
Kenneth Finnegan
http://blog.thelifeofkenneth.com/

On Wed, Jun 1, 2016 at 9:40 AM, Robert Bruninga via aprssig <
aprssig at tapr.org> wrote:

> By the way, I may have found a possible UHF exciter to get the radios
> working on 420 MHz, but the question is, is using the KA Packet nodes in
> the Kantronics KPC-9612’s the only way to do the level 4 network?  Although
> I am sure we can find enough KPC9612’s for the 15 sites, I’m wondering
> about long term viability?
>
>
>
> Is there software out there to replicate the KA-NODE network (I think it
> is same as THENET or theoriginal NETROM nodes?  Othern than the nice
> off-the-shelf approach of the KPC9612’s?
>
>
>
> Bob,WB4APR
>
>
>
>
>
>
>
> *From:* Robert Bruninga [mailto:bruninga at usna.edu]
> *Sent:* Friday, May 27, 2016 11:31 AM
> *To:* TAPR APRS Mailing List
> *Cc:* Robert Bruninga
> *Subject:* E Coast 9600 baud backbone 15W radios.
>
>
>
> At Dayton I picked up a box of 25 UHF data radios for the E Coast 9600
> baud backbone project.
>
> Turns out, they are on 824 MHz.  But they have a 15 W driver stage that
> can give us 15 Watts in the 420 MHz amateur band if we can find a simple
> UHF transceiver with 1 Watt output.  ALl we have to do is bypass the final
> 45W PA and add a TR switch.
>
> Then add a TNC node and we are done.
>
> See the info on these radios at the bottom of this page:
> http://aprs.org/ec9600net.html
>
> So, does anyone have ideas for the 1W UHX XCVR that we can split out the
> TX and RX separately so we can use these PA's?
>
> The data radios include a GPS receiver, but we wont need thoes in this
> application.
>
> Bob, WB4APR
>
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>
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