Sept 17 SCCARC Meeting Speaker: Mike Ritz W7VO (Past Club Prez)
Here is my bio:
“Currently retired in Scappoose, Oregon and very active ham, Mike was first licensed in 1974 as WN6HKP and earned his Amateur Extra in 1983. His main radio interests are contesting and DX, and mentoring new hams in HF operating. He was also President of the Santa Cruz Amateur Radio Club way back in 1981, exactly 40 years ago!
Mike is an ARRL Accredited Volunteer Examiner, ARRL Registered License Instructor, author, and seminar presenter on a variety of ham radio topics. In November 2018 he was elected Director for the ARRL Northwestern Division, (re-elected in August 2021), and in January 2019 as a Board member for the ARRL Foundation. For more information, check out his website: www.w7vo.com.”
Topic: SCCARC Meeting – September 17, 2021
Time: Sep 17, 2021 07:30 PM Pacific Time (US and Canada)
Join Zoom Meeting
Meeting ID: 821 0424 1876
40′ Tower Needs a Home
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Radio Outdoor Swap Meet Saturday, September 25, 8am – 2pm
SCCARC Lighthouse Special Event Station K6L
August Meeting with Speaker Ed Fong WB6IQN
The August meeting was with Ed Fong (WB6IQN). As many of you know, he is the inventor of the DBJ-1 and DBJ-2 antenna that was featured in the February 2003 and March 2007 QST. His most recent antenna was the TBJ-1 – a triband base antenna that was published in March 2017 QST. The DBJ-1 is a highly effective dual band VHF/UHF base station antenna and the DBJ-2 is the portable roll up version. The DBJ-2 won the QST Plaque of the Month Award. Both of these antennas are featured in the ARRL VHF antenna Handbook and also in the ARRL Antenna Classic Handbook. There are over 18,000 of these antennas in use today. About half are used by hams and the other half by government and commercial agencies. He will also give a brief discussion of his triband antenna (TBJ-1) that was featured in March 2017 QST.
Ed gave a history on how these antennas were developed and the theory on how and why they work so well. There is no “black magic” to antennas. He will explain in a non-mathematical manner why these antennas work so well.
Ed Fong was first licensed in 1968 as WN6IQN. He later upgraded to Extra Class with his present call of WB6IQN. He obtained the BSEE and MSEE degrees from the Univ. of California at Berkeley and his Ph.D. from the Univ. of San Francisco. A Senior Member of the IEEE, he has 12 patents and over 40 published papers and books in the area of communications and integrated circuit design. Presently, he is employed by the University of California, Santa Cruz (previously with Berkeley from 1997-2010) as an instructor teaching graduate classes in RF design and high speed interface. In his 35 year career, he has done work for Stanford University, National Semiconductor, Advanced Micro Devices, numerous startup companies in the Silicon Valley.
SCCARC Field Day 2021 Photos
A High and Awful Price…Lessons Learned from the Camp Fire
Our May Club Meeting
Our guest speaker for our May was George KJ6VU on the topic of projects from the ham radio workbench.
Good Work Building Fire Defensible Space at the Club Repeater Shack
Are you or you ready for the new RF exposure evaluation regulations?
By Dan Romanchik, KB6NU
On Tuesday, April 27, Dan, W1DAN, ARRL Eastern Massachusetts Section Technical Coordinator, gave a Zoom presentation on the latest FCC regulations on RF exposure evaluation. These are spelled out in FCC-1926A1 (https://www.fcc.gov/document/fcc-maintains-current-rf-exposure-safety-standards), “Proposed Changes in the Commission’s Rules Regarding Human Exposure to Radiofrequency Electromagnetic Fields; Reassessment of Federal Communications Commission Radiofrequency Exposure Limits and Policies.” The document is as long as the title might suggest—159 pages—but W1DAN boiled it down, focusing on what these changes mean for radio amateurs.
A recording of the presentation can be viewed by going to https://drive.google.com/drive/folders/1_qIGZhHyMrha-axJt87Dcu0UZuJO0t8F.
After explaining how RF exposure can be harmful, Dan explained how the rules are changing: The biggest change, he notes, is that amateur radio’s categorical exclusion has been eliminated. What this means is that now every radio amateur will have to perform an RF exposure evaluation of their stations. This now includes mobile and portable stations, including HTs, SOTA/POTA stations, and Field Day and special event stations.
He noted that you must be able to prove that your station is safe. This includes not only performing the evaluation, but also documenting these evaluations, should this data be requested by FCC personnel.
One thing that’s not changing are the maximum permissible exposure (MPE) limits. These are spelled out in FCC OET Bulletin 65
(https://transition.fcc.gov/Bureaus/Engineering_Technology/Documents/bulletins/oet65/oet65.pdf), “Evaluating Compliance with FCC Guidelines for Human Exposure to Radiofrequency Electromagnetic Fields.” The FCC published this document in August 1997, but it’s still the Bible when it comes to RF exposure. If you don’t have a copy, or have never taken a look at it, you really should do so.
Be careful, though, when reading it. It contains a table (Table 1 on p. 21) that contains a list of output powers at various frequencies. If your station exceeded those limits, then you were required to perform an RF evaluation. Now, however, all amateurs (and other radio services, for that matter) must perform RF exposure evaluations if their output power exceeds 1 mW. We are no longer categorically excluded from performing these evaluations.
OET Bulletin 65 goes on to give guidance on how to calculate or measure exposure levels. Explaining how to do this is outside the scope of this article, but again, you’ll want to refer to the bulletin for more information.
Besides the elimination of the categorical exclusion for amateur radio stations, what else is new is the dates on which amateur radio stations must perform evaluations. They are:
- May 3, 2021(!!) for new and modified stations
- May 3, 2023 for stations that complied under the old rules.
- An RF-exposure FAQ (http://www.arrl.org/files/file/Technology/RFsafetyCommittee/RFXFAQ.pdf) to help hams understand the new rules.
- “Learning to Live with RF Safety (http://www.arrl.org/files/file/protected/Group/Members/Technology/tis/info/pdf/QST_Mar_2009_p70-71.pdf),”QSTMarch 2009 pp. 70-71.
- RF Safety at Field Day (http://www.arrl.org/files/file/Technology/tis/info/pdf/9906048.pdf) QST, June 1999, pp. 48-51. A case study of Field Day with NSRC in a public park
- RF Exposure Station Evaluation and Exemption Worksheets (http://www.arrl.org/files/file/Technology/tis/info/pdf/rfex1_2.pdf)
- RF Exposure and You(http://www.arrl.org/files/file/Technology/RFsafetyCommittee/RF%20Exposure%20and%20You.pdf). This 8 Mbyte PDF file contains the text of the entire book by Ed Hare, W1RFI.
- Chapter 5 References (http://www.arrl.org/files/file/Technology/tis/info/pdf/RF%20Exposure%20Chapter%205.pdf) needed for filling out worksheet.
There are also links to FCC web pages with information on RF exposure.
I’m sure we’ll all be hearing more about this in the days ahead. Hopefully, someone will come out with a simple way to do the modeling or make the calculations. As always, play safe.
Dan Romanchik, KB6NU, is the author of the KB6NU amateur radio blog (KB6NU.Com), the “No Nonsense” amateur radio license study guides (https://KB6NU.Com/study-guides/), and often appears on the ICQPodcast (https://icqpodcast.com). When he’s not RF exposure evaluations, he teaches online ham radio classes and operates CW on the low end of the HF bands.
2021 Club Members Roster
We are finalizing the 2021 Santa Cruz County Amateur Radio Club,
SCCARC:K6BJ, member roster for use by our members. Today I emailed those
current and former club members for whom we have listed an email address.
If you have not yet seen our draft 2021 roster in email, but would like to
share it, join or renew right now.
Dues may be paid using PayPal or a credit card online, or by check in postal
For details, scroll down the webpage at
All donations welcome.
73, Cap KE6AFE
(assistant to treasurer Allen WB6RWU)
Santa Cruz County Field Day 2021 Interest Survey
The Field Day 2021 Planning Committee would like amateur radio operators to provide feedback to help facilitate planning for 2021 Field day.
I’ve created a survey on survey monkey because there’re more questions than can be asked with a poll here on groups.io.
If you’d like to participate in this survey, please go here:
Thank you for providing your input.
John Reinartz K6BJ QSL Card.
SCCARC K6MMM Field Day 2020 MOVIE
Greetings, All,My friend, Ms. Dorothee Ledbetter, just completed the edited video of this year’s Santa Cruz County Amateur Radio Club and San Lorenzo Valley Amateur Radio Club Field Day 2020 at Lago Lomita Vineyard. I think she did a marvelous job, and hope you all enjoy the video.
24-minute version (24.38, upl. 7/30/20)
2019 Holiday Luncheon