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…
Soundcard Interface Update
after much work, I got the VX1700 interface working. It would appear that the connection convention is a bit strange. From the service manual, Data OUT on the Data Jack…
SDR# as a visual panadaptor
It was a fun contest – this year’s sweepstakes threatened to not be a sweep for me – then again, i didn’t put a serious effort into it. I used…
USB Soundcard Interface
So, after much fussing and messing around with a rigblaster, I had had enough – I knew there must be a better way to interface to my FT1000. First, with…
Connectors… BNC, N, TNC, UHF, SMA… what?
OK, so everyone has their favorite type and installation method for RF connectors. While I’m not going to address everything, I’m going to describe my setup a bit, and the…
VX-1700 VFO mode
The VX1700 is a fairly nice radio, but it has one shortcoming from a flexibility standpoint – the VFO is not enabled by default, nor is it a simple software…
Return Loss, Part 2, or SDR VNA
After my last post on return loss, I ended up scouring eBay for a return loss bridge – or a set of directional couplers – to measure antennas and other…