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 »

PCB Manufacture – my way.

Having tried and failed and wasted too much Laser printer toner, gloss paper and time I have found a method that works for me. Key notes for success: Set the printer properties for max contrast, deselect any Eco Printing options, set graphics options to highest resolution. Clean the copper with a metal scouring pad and… Read More »

So it has begun…

Well, the project is in full swing and the reality of the journey ahead has became apparent. The plan this coming weekend is to build the DDS, MMIC amplifiers and Micro controller in to an aluminium enclosure along with all the external I/O connections and time permitting make the finishing touches to the software. Documentation… Read More »