[aprssig] simple digipeater
cak at dimebank.com
Tue Aug 17 18:25:13 EDT 2004
Stephen H. Smith wrote:
> 1) The PocketTracker has no receiver! It only transmits.
Right, I understand that. I mentioned it as the right *model* - that
is, the transmitter is designed strictly for sending APRS packets.
It seems that a receiver that was designed strictly for receiving
APRS packets might be easy/cheap to build.
> For the ultimate low power consumption, use a Kantronics KPC3+ ( this is
> the only TNC with the capability to do WIDEn-N digipeating out of the
> To do it cheaply, use a TNC2 clone such as an MFJ-1270 or Paccom, and
> replace it's standard firmware EPROM with one containing the freeware
> UI-Digi firmware. This code essentially gives a TNC2 a "brain
> transplant" and converts it into a dedicated intelligent APRS digipeater
Thanks. That gives me a bunch to go research :-)
> The downside of the TNC2/UI-Digi appoach is that a TNC2 consumes a lot
> more power (300mA at 12VDC) than a KPC3+ (less than 9mA). A
> consideration if you want to power this thing on batteries and solar
That was certainly one hope...
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