Soundcard Interface: Design For EMI
ok – this should be the final post…. I did one more batch of updates… this time I designed for EMI. Not only did I ensure I had full isolation…
USB Soundcard Interface… update 4
Over the past couple weeks, I have been tinkering more with the soundcard interface. I started using FreePCB (http://www.freepcb.com/) – which is a VERY nice PCB drawing program with gerber…
USB Soundcard interface…. version 3 – Update
Yesterday I posted the project… now I’ve made some updates…. a few minor things, and one major thing. First, the minor things- I made the schematic a bit cleaner, and…
USB Soundcard interface…. version 3
Many life changes have resulted in a change of shack configuration. I’ve also acquired an Icom 706 again (thanks, Lou). In tinkering, and deciding how I want to operate, I…
2014 Chevy Truck Accessory Power
I’m not the first person to need accessory power in a Chevy truck – but it took a while to find a solution. One possible solution is to just put…
Motorola MTR2000 Band Change
One of the interesting things about equipment on the market today is the commonality between different models and bands of radio equipment. In years past, it was just the basic…
CI-V EXTERNAL VFO CONTROL, PART 4
Today, I tackled interrupts. I’m not so sure I tackled interrupts, so much as i worked on determining the dynamic tuning step timing. I needed a routine to wait for…
CI-V EXTERNAL VFO CONTROL, PART 3
well, there’s been some small progress…. I started tinkering with the rotary encoder. I found a great example here: http://www.pjrc.com/teensy/td_libs_Encoder.html one thing, though – encoder.h must be added to the…
CI-V External VFO Control, Part 2
OK, this update won’t have any videos… those will come shortly, so you’ll need to take my word for it. I learned a few things since the last post… so…
CI-V External VFO Control, Part 1
Many years ago, Sam, K9SD, added some interesting functionality to his Icom 781 radios – an external encoder wired in parallel to the VFO control. This may seem trivial, but…