Update on the IC-9100

Ham radio VHF enthusiasts have been patiently waiting for the ICOM IC-9100. This HF/VHF/UHF/Satellites covers most or all of the popular amateur bands. Recently, ICOM has posted the specs and brochure on its web site. The rig has dual receivers that allow monitoring two bands at once and it is set up for full-duplex on … Read more

SWR and Return Loss – There’s an Ap for That

For the RF/microwave enthusiasts out there, you may recall the old HP Reflectometer Calculator that does conversions between SWR, Return Loss and calculated mismatch uncertainty. Well, fast forward to the 21st century and this same functionality can be found in an iPhone ap. Agilent Technologies has a free ap available on iTunes that does these … Read more

Announcing the Colorado FM Sprint

The Colorado FM Sprint is a short and simple VHF contest that runs in parallel with the ARRL June VHF QSO Party. Basically, it’s a chance to have some fun on the VHF bands for not-so-serious contesters. Sponsored by:  Colorado ARES and the Colorado VHF Group (KØYB) Direct any questions to k0yb@qsl.net This contest is … Read more

Hacking Away at D-STAR Hardware

We’ve been looking at optimizing the performance of the D-STAR repeater here in Monument (W0TLM, 446.8875 MHz), so I’ve been searching the web for information on what other groups have uncovered. Not surprisingly, there has been some creative reverse-engineering and re-engineering of the ICOM D-STAR repeaters. Here’s a summary of some Good Stuff that I … Read more