K0DK: High-Efficiency HT Antennas

It is well known that the standard “rubber duck” antenna that is supplied with a handheld VHF or UHF transceiver is not very efficient. It represents a compromise between size and efficiency, with size winning out. In other words, the antenna is small and doesn’t radiate very well. I just came across an article by … Read more

January VHF Sweepstakes Results – QRP

The results for the 2006 ARRL January VHF Sweepstakes were published in the July 2006 issue of QST. I’ve listed the Single Operator Portable (AKA QRP) scores below. My totally wimply score of 544 gave me 10th place in the overall contest. Of course, I dominated the Colorado section, which is easy to do when … Read more

2006 Colorado Section Amateur Radio Operator of the Year

I received this honor at Hamcon Colorado at Estes Park. Thanks to the Technical Specialist team in Colorado for all they have contributed. See http://www.k0nr.com/ts.html – 73 Bob K0NR From: ‘ARRL Web site’ To=memberlist@www.arrl.org> Sent: Thu, 15 Jun 2006 15:54 Subject: Bob Witte, K0NR: 2006 Section Operator of the Year Bob Witte, K0NR of Monument … Read more

ICOM Introduces D-STAR Dualband Handheld Transceiver

Just in time for the Dayton Hamvention, ICOM has announced the IC-91AD 2M/70cm handheld transceiver with D-STAR capability. I’ve written some about the new digital voice standard, D-STAR. Universal Radio has this new rig priced at $525, a definite premium over equivalent FM radios. This is the first dualband handheld that supports D-STAR. 73, Bob … Read more

The Wilderness Protocol

From the emcomm.org web site: “The Wilderness Protocol” (ref. June 1996 QST, page 85), recommends that stations (both fixed, portable or mobile) monitor the primary (and secondary if possible) frequency(s) every three hours starting at 7 AM local time, for five minutes (7:00-7:05 AM, 10:00-10:05 AM, etc.) Additionally, stations that have sufficient power resources should … Read more