Cold cloudy Friday : Raspberry Pi Time

Raspberry Pi things I did today :

1) hooked it all back up after the club presentation* having a bit of a problem with the wifi dongle, so I put it next to my cable modem and wifi router.  Used a short Ethernet cable I had on hand and tucked it among the satellite receiver, TV, and the other electronics in the living room.  Didn’t even know it was there.
* hooked up power, mouse, and an old keyboard I had handy.
* hooked up (temporarily) a small portable ( 9″ ) TV I picked up ages ago for Field Day.

2) fired it up.  Logged in.  Used the raspi-config script to enable SSH automatically.
3) Also selected in raspi-config to have the GUI start by itself.  Now we don’t have to worry about logging in right away anymore.
4) made a note of what my IP address for Pi is now.  I’ve had my router turned on and off lately.  hostname -I .
5) then I could download PuTTY onto another computer in a more comfortable place.  The picture on laptop is a lot sharper than the old TV.  Just set up PuTTY for SSH and use that IP address you got from the Hostname command.   And log in.
6.  Anything you can do from the command line setting right in front of the RPi you can do remotely with PuTTY.  So, I loaded the minicom software onto the Pi per the chatter on 4x4ham.com … and it worked pretty well.  I was able to connect to the KPC.  Just waiting now for my cables that connect the TNC to the Baofeng.

Shout with Questions



Paxon Terminal


So you’ve downloaded UZ7HO soundmodem from UZ7HO’s website and you’ve checked the connections between your radio, rig interface and computer if it’s been a while.

With some luck and browsing through the manual, you’re adjusted your audio settings, set the speed (baud rate) and you’re looking at 1200 baud signals on 144.390 or 145.01 or 300 baud signals on HF.

How to transmit ?

You want to use the Paxon terminal. Download it. Run the installer. It puts an icon on your desktop. The Paxon terminal program has some instructions in the window on the right hand side. It’s pretty straightforward. But one thing you want to do is when you’re In Devices, the “TNC” you really have is AGW. So there’s a tip.


sending a message from the Internet to RF APRS users

So, let’s say you’re stuck in the office without radio gear, or you have a smartphone with data service but no APRS coverage ?

No problem. Send a message to an APRS friend using the below link.


Just cut ‘n paste that into a web browser. Fill out the TO and FROM and MESSAGE fields and send your message.

The website will forward you to a page that shows a history of messages sent from a sender…. Supposedly.

For example : See the messages I’ve sent.


I say supposedly because there isn’t any authentication. You are who you say you are.

So don’t abuse it.


more APRS ponderings

On my HT, I usually run ARPS on one “side”, and the BAARC repeater on the other VFO.  So, along with talking there is a lot of that screaching.  Atleast that is what the wife calls it.


Bob WB4APR proposes a solution.  Turn on PL encode and decode for PL100 on 144.390 when using APRS.  Then you’ll only hear stations SO CLOSE to you (simplex range) that you might want to give them a voice call.  I’ll have to try this on the way to Dayton.  Bob calls it “Voice Alert”.


I think I like the idea.  I see all the APRS stations scroll past my screen, and I get the “beep” when every I’m digipeated… which is important.






leaving messages in APRS

I wanted to get the word out about the Monday Night Net tonight.  So, I had a couple options (as far as I know so far).

I can put a message about the net as my status.

example :
2012-01-31 01:16:00 UTC: KD5NJR-7>S6PQ0V,ETULSA*,WIDE1,WIDE2-1,qAR,KF5JQW:'{KF<0x1c> <0x1c>K>146.910MHz C088 -060net tonite !


Or I could make a bulletin.  Check it out below.


Bulletins and announcements sent by stations within 500 km from your location
callsign ID message age
KD5NJR-7 BLN1 net tonite 146,910 46s

You can get bulletins for up to 24 hours after transmission from the APRS.FI website.  I haven’t looked into how long they last in the APRS-IS servers.

There are also some ways to use “GROUPs” to help organize the bulletins.  I’m still learning on that.

More to follow,