MYCallsign – Malaysian Amateur Radio Callsign Query Mobile Application has been Updated!

MYCallsign – the Malaysian Amateur Radio Callsign Query Mobile Application has been updated, now it comes with a new spiffy logo. The mobile application can be installed on most Nokia, Sony-Ericsson, Motorola and Samsung phones. The application can be used to display information regarding an amateur radio callsign, such as handle (fullname), apparatus assignment (AA) and AA expiry date, and it is handy for recording QSO information in the logbook.

MYCallsign Screenshot MYCallsign Screenshot

MYCallsign Screenshot

The application is licensed under the GNU General Public License 2.0 and is available for download at MYCallsign GoogleCode website

The new MYCallsign logo was created by Piju (9W2PJU –

Easy to use 555 Timer Electronic IC Simulator Software

The (*)555 Timer IC software has been use in countless of electronic project that requires the use of square wave (Astable). NE555 IC can act as a timer, delayed switch (Monostable), Schmitt trigger and simple memory switch. Here a a selection of Youtube videos that demonstrate the usefulness of 555 IC timer for electronic hobbyist.

IC NE555 TImer

The 555 Timer can help any electronic hobbyist and newcomer to build circuits with Astable or Monostable configuration. The application is very easy to use as the user only need to key in their desirable value of when the 555 timer should activates or deactivates; and the software does the calculation for the capacitors and resistors value.

timer 555

The software is written by Andrew Clarkson, and you can download the software from