VK5TM


News, Updates and Other Minutiae

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.

As a lot of people have pics of things unrelated to ham radio on their websites, I thought I would add a couple of my own (Scroll down for site updates). Banjo, our Red Heeler/Koolie cross at 4 months old. Banjo at 4 months And at 12 months old (Feb 2016) enjoying his birthday breakfast treat of banana on toast. Banjo at 4 months A new addition to the family, an 11 week old kitten (end July 2017), rescued by Banjo after being trapped between a water tank and fence. Her name is Storm after her colouring and it's eating a bit of toast and jam (yes, our animals do eat strange things, including lemon meringue pie). They are now the best of friends. Storm at 10 weeks

November 2017

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'.

October 2017

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).

September 2017

Noise Canceller kits now available.

July 2017

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.

May 2017

New project added - my version of the X-Phase noise canceller. PCB available and a kit of parts to follow soon

October - 2017

I've been a little slack updating this page, but have been updating/adding some of the projects and other pages. Particularly the Xtal Substitute and Simple VFO projects. The Noise Canceller project has also been added. 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. The rest of the cost is paid from my own pocket and so far I have resisted the temptation of adding horrible, intrusive, in your face advertising to my pages, although that may have to change if push comes to shove. So, 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. I've also been asked why no Paypal button for the pcb's and kits. Simple answer, besides the extra cost of having to get an SSL certificate, - too many dickheads who have nothing better to do than trying to hack websites and I've got better things to do than filter their crap. I do accept Paypal, but you need to contact me for the details. As an aside, I recently received from the UK, a proper, old school, written on paper and posted order for a pcb. It was a distinct pleasure to receive (considering about the only things that turn up in the mail these days are bills and junk mail).

November - 2016

Updated the website to (hopefully) be more mobile friendly. The "Misc" pages are currently not linked in yet, but will add them at a later date (or more commonly known as - 'when I get around to it'). "Misc" pages are now linked (I found my roundtuit). My "Smartphone" (smart my a**e) died, so I have no way of checking all of this to see if it is working properly until I get a replacement, so if you find a problem with viewing this site on a "Smart" device, let me know please.

A quick update on happenings - Jan 2015

I have moved the details of the PSK kit re-release to it's own page PSK kit info

Have also made a little progress on the DDS ALC over the last couple of weeks, getting the level to within 2dBm over the range of 2 - 60 MHz, so close, but no banana yet.

A quick update on happenings - Dec 2014

Just a quick update on what is happening around here ham radio wise. I have been working on the ALC for my DDS project on and off. Still not coming up with anything I am happy with, but I will eventually get that sorted.

Back on the air!

After 20 odd years, I am finally back on the air - yea. Firstly, thanks to the following for the first contact on January 4th (2014) after such a long time away: VK3VCR, Gary VK3VBI, Ron VK5FTRG, Tom Also coming in near the end of the contact was Darryl VK5JDS and Ron VK5VH. Thankyou Gentlemen. It is amazing what you forget after being "out of the game" for so long. Simple things like having paper and pen and even a watch/clock to record the details of the contact. Won't take long to get back into the swing of it though. So, now for the how and what. It was, except for the transceiver, a very heath robinson affair as the pictures below will show, but it worked. The transceiver is a KNQ7A which I assembled from a kit (I am also now the Australian distributor for these kits). This was followed with the obligatory swr meter, a variable cap/roller inductor combination to match to the 22m of hookup wire hung off the TV tower back to the shed, power supply and a couple of croc leads. This version of the KNQ7A is VXO controlled over the range of approximately 7.080MHz to 7.100MHz with a power output of around 7-8 watts. I still need to finalise the alignment, put the top on it and measure the actual power out. The ham bench Antenna tuner/connection Yes, you can have a good chuckle, I won't mind. It even surprised me that I was able to make a contact with this setup. But wait, there's more. How about this for the microphone connection? Microphone connection I don't have any 8 pin mic connectors on hand and the Nokia microphone has an RJ45 connector on it. The result, an RJ45 socket (the white thing in the top pic near the mic input) and some female pins cut out of a moulded DB15 connector to hook it all up.

TIP - need pcb pins or sockets to connect to pcb pins? Find an old lead with DB style connectors that you no longer have use for and carefully remove the pins.
Old DB style connectors

All in all, it was a very enjoyable first contact, after getting over the shock this all worked. Now to get on and put up a better antenna. (And I haven't been idle re the DDS project, some more to post shortly)