A quick update on happenings - Jan 2015
I have moved the details of the PSK kit re-release to it's own page
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. 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? 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.
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)