[aprssig] smart beaconing for kenwoods!

Brian B. Riley brianbr at mac.com
Wed Jun 15 22:10:44 CDT 2005

You its so annoying to constantly hear the rants that Basic Stamps are
soooooo expensive, when you can buy the BS2SX-OEM (am Ubicom SX-28) chip
from Parallax for $12, a 24LC128 from Mouse for a dollar something and some
assorted glue chip for a couple of bucks and have a full 50 MHz BS2-SX up
and running inexpensively.

 Now its bulkier and a bunch of wiring to do using the OEM chips if you use
the DIP versions versus the Parallax complete product on their tiny 24 pin
carrier. Granted you could shrink that down using  the SOIC versions of the
OEM, but you then are dealing with less size but mice-size SM stuff.

Further you can use the raw SX-28 at 50 MHz for $3.50-$5.50 (depending on
whether Parallax is having a sale) and program it using the free SX/B
compiler, but you have an initial layout of $40-60 for the Blitz-Key
programmer or SX-key programmer/debugger.

Cheers ... 73 de brian, n1bq, underhill center, vermont

On 6/15/05 4:29 PM, "Andrew Rich" <vk4tec at tech-software.net> wrote:

> Or a PIC, PIC are cheaper and i have used them with GPS ;-)
> well used both 
> www.tech-software.net
> Andy vk4tec
> -----Original Message-----
> From: Wes Johnston [mailto:aprs at kd4rdb.com]
> Sent: Thursday, 16 June 2005 4:20 AM
> To: TAPR APRS Mailing List
> Subject: [aprssig] smart beaconing for kenwoods!
> I mean this in jest, but hey, it'd work!
> Get a pocket tracker from byonics.com and wire it up in your car to the
> existing GPS that feeds your d700 radio (ie a Y connection on the GPS's
> tx data line).  Use a dummy load for an antenna on your pocket tracker,
> and set it's path to: <your callsign>, WIDE1-1,WIDE2-1.  Turn on
> digipeating on your d700.  Now, the only station can can hear your
> pocket tracker is your kenwood d700, which has it's beacon function
> turned off.  Make sure the d700 and the pocket tracker have the same
> callsign.  Program the pocket tracker for smart beaconing.  When it
> transmits, the kenwood will hear it, and digipeat the packet out with
> 50w.  Everyone will see that packet and think it came from your kenwood
> d700.  If they need to message you, the kenwood will still handle that.
> Another way (on a serious note), is to hook a basic stamp to your GPS in
> similar fashion.  The basic stamp listens to your GPS data stream and
> figures out when you have turned, then serially, tells the d700 to turn
> beacon off and right back on.  This causes the kenwood to send a
> position report right away.  The only problem with this method is that
> if you happen to be entering a text message on the keypad and the basic
> stamp tells the kenwood to beacon, it'll exit the message dialog w/o
> saving it.  Basic stamp code for this is available at
> http://www.kd4rdb.com/bbs/viewtopic.php?t=15
> Wes
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