ICOM IC-7610 vs. Elecraft K3s

ICOM IC-7610 This review is close to my experience with the IC-7610: The most important thing is his comment on how clear the 7610 receiver sounds – which I can vouch for when I worked 3B7A last night on 40M SSB. Weak signals just sound a bit “clearer” than when I had my K3. Being at the bottom of the cycle – and needing…

Ruh-oh: 5BWAZ!

Besides DXCC Honor Roll and 9BDXCC, only Top of Honor Roll have interested me. But now that the ARRL has added CQ Awards data – just for fun I checked my 5BWAZ bingo chart – and its a lot more interesting than I had expected. Ruh Oh, could this be my next DX “Muse”? It sure is way more interesting than I had expected…

Flask REST API Development

At Credit Karma, I’m designing and developing a Python-MySQL Flask based REST API. It will be used by a web browser app called the CK Data Dictionary Navigator, and it will be Open Sourced. I won an employee award for designing the first version, and now we are adding the GUI and REST API after last year’s successful “socialization” of the Data Dictionary –…

60′ 80M Vertical Matching Box Built

That was fun and much simpler than trying to create a multiband matching circuit. I ended up using refrigerator tubing for the coil. It’s about 4″ in diameter, and 9 turns. The direct line was good for 3.857.5, and the coil let’s me go down to 3.515. I also have a 1:1 current choke at the input, which means the common mode current will…

Once (or twice) in a Blue Moon

It’s been one of those bizarre weeks at work, but ended with a big award for designing and implementing two things – a Distributed Data Dictionary that inventories and catalogs database objects across all MySQL, PostgreSQL and Bigquery databases, and a system called Universal Customer Reporting, which provides data to Data Scientists in a way that is modular, meaning re-usable, scalable and flexible. The…

80M Base Switching Circuit

The circuit will be ready with just a few solder lugs and wire and mounting that heavy coil to the board. Then the board fits perfectly in the Bud Box: And this gets screwed into the redwood support of the vertical.

History of DXCC Chart – Update

Click on Image to get the full size JPEG, or here for the PDF: new

DX Engineering DV Phased Arrays and Radials

I have the DX Engineering DV-40-P, and it exceeds my expectations. Unfortunately, the DV-80-P is not going to pan out. Why? I just found out that it is critical that you have even and equal radials between the two, and that they all be on ground. You cannot have one really good radial field for one and not so good on the other. I…

Gain on 80 – 6M . .

When I first moved into my Orinda house in 2006, I put up a simple 20M Moxon (orange circle). That was up only 30′ or so, but I worked lots of DX with it. A year before I made DXCC Honor Roll (New Years Eve 2012/13), I had hit a brick wall – I missed E4X and ST0R. I used HFTA and realized because…

Antenna Alert! Antenna Alert!

Everything is coming together for this weekend. The US Towers ALM-31 arrived and it exceeds my expectations: Its more “stout” than I remember it being at Dayton last year. Its very well built and the brackets are perfect for where I plan to put it. The shipping crate was perfect. I have most of the UrbanBeam done – all of the tubes are prepared,…