Improved PCB Manufacture

Having had some inspiration from another Radio HAM, G0SLV, on an improved toner transfer method I invested in a new heat press to make the toner transfer process more successful than previous attempts using a normal household iron. The iron method was always hit and miss – sometimes I got lucky, other times not so… Read More »

AD603 Thoughts

Having done some research in to the AD603 which which was drawn to my attention by G6LBQ, I found a supplier who offers free next day delivery – RS Components for the sum of £9.60 each plus VAT. I will put together a breadboard lash up of the AD603 circuit published in the EI9GQ “Building… Read More »

First IF Stage testing and debugging

Following the assembly of the first IF stage PCB I began testing and as expected it did not work. The first set of bugs turned out to be the FET’s were in the wrong way, I placed them according to the legend in my PCB software but the device legend was incorrect – thankfully no… Read More »

Receiver First IF Stage

I started the build of the receiver first IF stage today, etched the PCB, drilled it and started assembly – how quickly 5 hours goes. The most time consuming part for me was the drilling, however this is an art I have mastered by using a magnified lamp and lots of patience. Just need to… Read More »

Transceiver Control Unit

First stages of the control unit for the SSB transceiver are complete, most of the IO is wired to the front panel connectors and some still needs mapping out but this will evolve over the course of the project. For now it is communicating with the DDS unit and serial communication back to the development… Read More »

DIY PCB Cutting tool

Having tried various methods with mixed results, I have found a method that works very well that allows clean, accurate cutting of PCB material. Tin snips caused more damage than good, a scoring tool/craft knife took too long and the end result was always hit and miss besides the risk of slipping and damaging the PCB… Read More »

Useful Internet Links

Pete, N6QW blog about building your own radio equipment, very informative and some interesting and inspirational content. http://n6qw.blogspot.co.uk  

DDS VFO

The VFO design is based on the AD9959 DDS which is capable of 20 X clock speed, for a 25MHz clock we can achieve over 200MHz however as I only require the VFO to operate at up to the 2M (144MHz) band 156MHz was suffice so running the clock multiplier at 16 X is enough.… Read More »