Dual Gate MOSFET Investigations – Intermodulation
A look into the intermod properties of a BF991 amplifier.… Read More Dual Gate MOSFET Investigations – Intermodulation
Category: CC-Series
Wideband Transmission #5
Latest CC1 Progress As you can see from the above photo, I have finished a significant portion of the digital side of the newest CC1 prototype and now I’m on to the receiver section. This weekend I finished my first pass of the audio chain and characterized the gain and frequency response of the chain.… Read More Wideband Transmission #5
Wideband Transmission #4
It’s been a while since I’ve posted one of these. I understand that things have been fairly quiet over here in the last few months, so I wanted to let you all know that I’m not dead yet. I’ve actually been working on Etherkit a fair amount in the background, and that has been eating… Read More Wideband Transmission #4
Si5351A Investigations Part 6
The theme of this blog post is not lots of tedious work, but refinement leading to good results. First off, let’s talk about the funny I2C address on the parts which I received from Mouser. Since Digi-Key has no order minimums and very inexpensive shipping available (in the form of USPS First Class mail), I… Read More Si5351A Investigations Part 6
Stuff ‘n Things
As a mild winter turns into an unusually nice spring here in Beaverton (last week we had multiple days with clear skies and highs in the upper 70s °F), a young ham’s thoughts turn to portable activations, Field Day, SOTA, and the like. I’ve been looking forward to this summer for the opportunity to take… Read More Stuff ‘n Things
First CC1-to-CC1 QSO
Last night, I had the very first 2x CC1 QSO with Dave AA7EE on 40 meters. Rather than try to blather about it, I’ll let the video do the talking. Needless to say, we were both quite stoked!
The Thrill of QRP DX
Last night after the rest of the family was in bed, I was hacking on the CC1 firmware to add the BFO calibration routine so that I could get an accurate readout of my receive frequency. After successfully completing that task at the late hour of 0130, I decided to cruise 40 meters to see… Read More The Thrill of QRP DX
CC1 #1
A brief post to show you the CC1 prototype, now inside of its aluminum enclosure. This is the actual enclosure that will be used for production, but I will have the end caps custom cut and silkscreened, so you won’t have to do it yourself. Pardon my questionable metalworking skills, and please note the the… Read More CC1 #1
First RF
Two days ago, I received my pack of 10 CC1 prototype PCBs from Seeed Studio. The excitement was too much, so I immediately started building the first CC1 prototype as soon as my wife got home from work. Not surprisingly, I didn’t go to bed until I completed the build, sometime around 3 AM. I… Read More First RF
HNY
Yes, a belated Happy New Year greetings! It’s hard to believe that 2013 is already well under way. I figured it was about time to give you a quick update on what’s going on in the shack right now. First up is the discrete component grabber receiver for 14.141 MHz that I prototyped to be… Read More HNY