Thursday, June 24, 2010

List of Things

Things to try, buy, finish, ... in no particular order
Done:
  • Traxxas Slash
  • Linear Amplifier, abt. 500W
  • Marklin "Ticket To Ride" game

Friday, June 11, 2010

APRS Links

Sunday, June 6, 2010

Comcast Arris Cable/Phone Modem Signal Levels

After intermittent phone problems via our Arris Touchstone digital phone and cable modem, a Comcast technician adjusted the signal levels and checked connectors outside of the house. Now that everything is good again, they look like this:

Go to http://192.168.100.1 to view the RF status.
  • Downstream should be around 0 dBmV (currently it's -1 dBmV)
  • Upstream should be around 45 dBmV
A few weeks later, there were still too many times when the modem seemed to restart/reboot on its own or otherwise loose connections (most LEDs on its front off). It was replaced with a Thompson RCA DHG536 modem that uses the same http://192.168.100.1 to view its status.

Wednesday, June 2, 2010

QRZ.COM Web Parser Limitations

Writing a web page parser for QRZ.COM recently became harder because you have to log in to see the more detailed information about operator location etc.

That's probably why Ham Radio Deluxe and other programs announced that they'll
stop supporting their QRZ.COM web page parser and instead use only
the QRZ.COM XML interface.

Good news: The interface allows name and country lookup for every
QRZ.COM user.

Bad news: Have to be registered. That's free, but means that all lookups
are traced to your user ID.
For the full information (grid, location, license info, ...) you have
to be a subscribed user, about $25 per year.

May not be that much money considering that QRZ.COM must have considerable
costs for keeping the page running.

Anyway, XML format detail is currently here:

Another option might be the FCC ULS data, access to which is described here: