Various Projects I had tried, some not and also had provide some diagrams for your convenient.
Convert PC power supply to High Current power supply - Have not tried, but seen before, so try at your own risk. If you do not know what you doing, it is recommended to spend abit extra money to get a commercial one.
Echolink PSK details. Photos of my homebrew PSK controller and the circuit diagram.
Protector It is a nice add-on to your existing power supply if your power supply does not give over-voltage protection and also provide a few secs delay in start.
External Accessories Protector for cars - You can modify and use it to protect your mobile antenna.
Battery Guardian - Cuts battery power when voltage drops to below preset level, 10A rating.
12v lead acid Battery Charger regulator
- Coming soon
Don't know how to get high current
power supply? Simple way, go get 40Amp car battery and hook battery charger
to it Make sure the charger is automatic to float charge when is full. This
circuit provide the function of auto float charge. You might want to consider
this too as even black out, you still able to transmit.
Print your own Circuit Board (PCB)
- Want to print your own Printed circuit board in a Professional way but don't
know how? I found some information on how to do it and many people claims that
it works!
Click here
to read the article. (will open in new page)
100% Tested, make your own PCB
Repeater
Controller
Identical to commercial repeater controller board. You still require receiver
and transceiver. PIC required.
Converter for normal FM radio to receive approx
. 100-200Mhz