Sidetracks

Diversions from our main purpose; sometimes necessary, sometimes just for fun.


208mm of RG-6/U makes a nice 4:1 Balun. 12
This post comes under the Sidetracks category because it isn’t strictly part of J-Tech’s business (we don’t sell antennas) but it is related to wireless design. There were two objectives to this exercise: 1) learn about the Yagi/Uda antenna from a practical standpoint; 2) get something for nothing. The “something” […]

Building a Yagi Antenna for UHF


An error message is emanating from our beloved Racal Dana 1992 Frequency Counter. It’s a classic but useful piece of test equipment, and we’d hate to see it go. Poring over the service manual, the timing error correction hybrid (TEC) is supposed to have a stop count of 800 +/-220; […]

Racal Dana 1992 Repair


how much eye candy can a post about putting dos on a usb stick require?
There’s a lot of old hardware operating out there, and many a test/interface suite still exists in old-school DOS. Moving these antique applications into a modern computing environment with all the extensibility and reusability we’ve come to know and love requires being able to at least see the old application […]

FreeDOS on a Stick