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[aprssig] Re: UIDIGI vs KPC-3+

Ron Perry ronk at sunlinux.com.au
Mon Aug 2 03:03:58 UTC 2004


Also Site Alert can be used with uidigi

http://www.aprs.net.au/Site%20Alert%203%20Web_2.htm

Regards
Ron


On Fri, 2004-07-30 at 13:58, Stephen H Smith wrote:
> Dave Kaplan wrote on 7/29/2004, 8:03 PM:
> 
>  > Anyone want to help me come up with a "Top 10 List with to use UIDIGI
>  > rather than a KPC-3+"
>  >
>  > Dave
>  > WB0WNX
> 
> I can't think of TEN reasons but the major ones are:
> 
> 1)  Cheaper if you can pick up an old MFJ1270 at a swapmeet (I've got 
> three for an average of $30 each.)
> 
> 2)  Custom settings (callsigns, paths, beacon texts, etc) are "frozen in 
> stone" in the eprom (can't get lost from power failures, accidental 
> resets, etc).
> 
> 3)  More comprehensive dupe supression and "preemptive" digipeating 
> algorithms.
> 
> The main downsides to TNC2/ui-digi:
> 
> 1)  Higher DC power consumption (100s of mA compared to under 10mA for a 
> KPC3+). May be relevent if you are trying to run a digi from batteries 
> and solar panels in a remote location.
> 
> 2)  No true DCD that distinguishes data from voice or noise on a channel 
> (makes it very difficult to run a TNC2 open squelch, or on a mixed 
> voice/data Mic-E repeater -- KPC3 or KAM works perfectly on open squelch).
> 
> 3)  Can't use the TNC to monitor channel activity; UI-digi doesn't echo 
>   received data out the serial port.  If you want to see what the 
> UI-digi system is hearing, you have to connect a second TNC with 
> conventional firmware in parallel across the receive audio.   (KPC3+ can 
> function as a digipeater, and be used with a program like UI-View, 
> APRSplus, etc at the same time.)
> 
> 
> 
> Stephen H. Smith                   wa8lmf (at)  aol.com
> Home Page:                            http://wa8lmf.com
> 
> 
> 
> 
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