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Tag Archives: kit
Some thoughts on the K5BCQ Si570 signal source
For the last few months, I’ve been working on building a radio from a pair of kits old enough to vote: KK7B’s R2 receiver and T2 transmitter. A complete transceiver built from these kits needs some other pieces, including a … Continue reading
Working slowly on the R2/T2 radio
I was at my workbench when my son came downstairs to talk and hang out. A budding reader, he soon started singing the A-B-C song with the letters mixed up. It crossed my mind that this was odd, but I … Continue reading
An Si570 VFO for the R2/T2 transceiver project
I’m continuing to work on my R2/T2 transceiver project as time allows. My goal is to get on the air before the sunspot cycle peak passes. That gives me a little time yet, but at the rate I get things … Continue reading
An enclosure for the R2/T2 transceiver
After months of organizing parts, I have finally gotten back to the R2/T2 transceiver project. Don’t get me wrong, the cleaning and sorting is not done, but I felt the urge to do something a bit more… constructive. While cleaning, … Continue reading
FDIM 2012: The YADI micropower digital interface
Next in our tour of projects from the Four Days In May event at the Dayton Hamvention is an innovative radio-to-computer interface. The unique feature of YADI, Yet Another Digital Interface, is a micropower VOX circuit. This lets it sip … Continue reading
Posted in Everything Else
Tagged kit, micropower, SDR, software-defined radio, sound card
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KK7B R2 receiver: lifted pads, a scorched board, and it works anyway
I’m slowly making progress on my KK7B R2/T2 transceiver project. At my last report, I was waiting for replacement capacitors to arrive. They did, and I pulled out my ancient solder-removal iron, a Radio Shack unit from who knows how … Continue reading
R2 receiver update: Time for new electrolytic capacitors
Crunch time at work has been limiting my basement tinkering, but I recently found time to work on my R2 receiver a bit more. It is pulling excessive bias current, which had me scratching my head. The audio power amplifier … Continue reading
Building a KK7B R2 phasing receiver
Hi, I’m back! It was a rough week, with a death in the family. As it ended, I found some time for some “solder therapy”. There is something good for the soul in putting together electronics. I don’t know if … Continue reading
