I have, for quite a while, provided modified versions of the code for my projects free of charge. However, the cost of webhosting for this site has tripled in the last couple of years and the little I make out of the pcbs I sell goes nowhere near covering this cost.
As of October 2017, I will be asking for a donation in exchange for providing custom modified code for my projects to help keep this site available.
Updated Australian Band Plan page with the latest info (under 'Misc' heading).
A modification plus software to allow the Simple DDS VFO to be re-calibrated as often as you want without having to re-program the PIC has been added to the Simple DDS VFO page. Simple DDS VFO bug problem fixed. Code uploaded to webpage as version 'c'.
There is a bug in the Simple DDS VFO code. See Simple DDS VFO page for the problem and updated code. Included an add-on for the Simple VFO project to indicate which step size has been selected. Simple DDS VFO project updated and software file uploaded. The pushbutton on the encoder is used to change step size (step sizes 10Hz, 1kHz and 10kHz).
Noise Canceller kits now available.
Updated both the DDS Xtal Substitute and DDS Xtal Substitute Mark 2 projects into one project. The original webpages are available to download as PDF's.
New project added - my version of the X-Phase noise canceller. PCB available and a kit of parts to follow soon
I don't know why, but quite a lot of Amateur Radio operators also have an interest in trains. Mine started in the UK when my mother used to take me (on a train) to Waterloo Station to watch the trains as a days outing back in the late 50's. Model trains for me started with the old Hornby 'O' gauge clockwork types through to the 3 rail Hornby Dublo (boy, do I wish I had kept all those) and later Triang equipment. I have other the last few years started collecting a bit of the 3 rail Hornby Dublo items I used to have. There were the usual not very sophisticated layouts as a youngster which slowly progressed into something better like that of the Porthleven trackplan below. Unfortunately, I never did get any pictures of it, even though I had a father who was a photographer.
Then the usual things got in the way, cars, girls, work, amateur radio (not necessarily in that order) and modelling took a back seat. All the model railway equipment I do have, is stored in boxes on top of the wardrobes and now I have the urge to do something with it again. The intention is to recreate something like Porthleven, but this time in OO9/HOn30 (I'm not a 'rivet counter' or a stickler for exactness, I much prefer to model something pleasing to my eye, with the odd memory of younger years back in the UK thrown in). Oh and one of the reasons for going to OO9 is that every time we moved house in the last few years, the house got smaller and smaller, so room is at a premium. This trackplan for Porthleven was published in the UK magazine Railway Modeller in July 1967. It is a fictitious extension of the railway into a part of Cornwall (UK) that didn't have railway access.