|
Tech Corner |
Summary | Call Sign |
|---|---|---|
| A 16F88 PIC Based Clock and Calendar using a Dallas DS1307 RTC Device for battery backed up timekeeping |
I've been at it again, this time, I have coded for a clock that shows time and date, will keep time accurately with no DC applied as it is interfaced to a Dallas DS1307 timekeeper. |
VK2TIM 02/11/2009 |
| A compact 1:1 Choke Balun with decent power handling, for less than $50 |
Here is a simple weatherproof choke balun, capable of 100w+ power handling, compact in size, neat looking and low cost. |
VK2TIM 17/10/2009 |
| A GPS driven "No need to set" clock/compass/speedo |
A GPS based clock using a 16F628A PIC, and a EM406A GPS Module - Hardware by VK2TIM, Original Firmware, design and concept by Ken, VK7KRJ |
VK2TIM 21/01/2010 |
| Attenuator |
An attenuator suitable for foxhunting and other equipment testing |
VK2BOS 19/09/2009 |
| Audio Function Generator with Frequency and P-P voltage display |
This is an audio signal generator that does sine or square wave, operates from 20Hz to just over 30Khz, has a frequency display with 1Hz resolution, and a P-P output voltage indicator with a resolution of 100mV. |
VK2TIM 04/12/2009 |
| Building a Dummy Load and Measuring Power Accurately |
The title says it all. This article is published with the permission of the author, Ken Kemski K4EAA. |
VK2FTTP 13/11/2009 |
| Checking the Calibration of your SWR meter and constructing a dummy load. |
There is a simple way to check if your SWR bridge is working correctly. You will need a 5 watt resistor, not wire wound, of 75 ohms and 100 ohms. |
VK2XTT 16/10/2009 |
| CTCSS Board |
Circuit diagram and PCB layout for Tait Electronics TA-500 CTCSS Encoder |
VK2VSV 19/09/2009 |
| FM900 |
Information about modifying a Phillips FM900 for Amateur use |
VK2VSV 19/09/2009 |
| PIC based digital clock |
A "Vanity" LCD clock that displays the current time and -your- callsign, using a 16F84A PIC Microcontroller |
VK2TIM 29/09/2009 |
| Roger Beep Unit by Peter VK2PJZ |
This unit is designed to run in line with your microphone so requires no modifications to your transceiver. |
VK2PJZ 12/11/2009 |
| RT-85 |
Converting an AWA RT85 LOW BAND Transceiver to 6 Metres |
VK2VSV 19/09/2009 |
| Suppressing RF Interference |
Ferrite is your friend, and more often than not, the simplest solution to RFI problems. |
VK2TIM 29/09/2009 |