Amateur Radio · VHF/UHF · Summits On The Air · Colorado Mountains · Adventure
For our local 2m net, the Net Control Station asks a Question of the Night to stimulate some discussion. Recently, the question was: Do you have any interest in CW. If yes, Do you currently operate CW or do you plan to learn? If you have no interest in CW, what other modes besides voice … Read more
For the June VHF contest, I operated Single-Op Portable from the summit of Pikes Peak. I combined this with Summits On The Air (SOTA) and Parks On The Air (POTA) activations. In a few hours, I made 80 QSOs on 6m, 2m, 1.25m, 70cm, and 23cm bands. It was a fun time. Quite a few … Read more
A big trend in ham radio activity is the use of internet-connected transceivers commonly referred to as hotspots. These devices often use one (or more) of the popular VHF/UHF digital formats (DMR, D-STAR, Fusion) but analog FM is also used. They allow a radio amateur to have a local RF connection into one of the extensive … Read more
This post is a continuation of The Cacophony of Digital Voice Continues (Part 1), so you probably should read that one first. All of the popular amateur digital voice (DV) systems (D-STAR, DMR and YSF) use the AMBE vocoder (voice codec) technology. This technology was developed by Digital Voice Systems, Inc. and is proprietary technology … Read more
It wasn’t that long ago that I commented on the state of digital voice on the VHF/UHF ham bands: Digital Voice Balkanization. We have three main competing (incompatible) standards in the running: D-STAR, DMR and Yaesu System Fusion (YSF). At a high level, these three formats all do the same thing but there are significant … Read more
Last weekend, I had the privilege of attending the Pacificon amateur radio convention in Santa Clara, something I have been trying to do for several years now. It is a great event, with good technical programs and a super venue. The most interesting presentation I saw was the one on digital voice (DV) technology by Bruce Perens … Read more