SBARC-list March 2012

sbarc-list@lists.netlojix.com

10 participants
17 discussions

Upcoming CERT Training
by Rod Fritz 01 Apr '12

01 Apr '12

Hello SBARC Members and Friends, A few months ago, a few SBARC members attended the CERT Training (see attachments) and we found it very well-done and worthwhile. Basically, it prepares you to assist your family and neighbors during the first 72 hours of a major disaster when local services may not be readily available. Although, the courses listed here are held in the UCSB area, you will be welcome if you’re an outsider as many of us were. If you’re interested, I suggest contacting Jim Caesar by email (see the “From” line below) and do yourself, your family and your community a big favor by completing the course. Rod Fritz, WB9KMO ---------------------------------------------------------- From: James Caesar [mailto:James.Caesar@ehs.ucsb.edu] Sent: Monday, March 26, 2012 8:59 AM To: James Caesar Subject: Upcoming CERT Training Please find attached flyers for the upcoming UCSB CERT classes. We are offering two classes: Tuesdays-Starting April 3 at 9 am- Thursdays - Starting April 5 at 6pm Please pass along to friends and family! SB City TV CERT video (jump to CERT): http://santabarbara.granicus.com/MediaPlayer.php?view_id=43&clip_id=4651 ---------------------- Jim Caesar Emergency Preparedness Manager UCSB Environmental Health & Safety 565 Mesa Rd, Santa Barbara, CA 93106-5132 Mail Code: 5132 Office/Cell: (805) 450-1437 FAX: (805) 893-8659 http://emergency.ucsb.edu/ james.caesar(a)ehs.ucsb.edu A BIG earthquake means “Move Away” from the ocean. Learn about your Tsunami Risk in Santa Barbara County Tsunami Inundation Maps

2 1

Ham Radio Now
by Marvin Johnston 30 Mar '12

30 Mar '12

Those of you who were at the last SBARC club meeting saw a DVD on ARDF by Gary Pearce, KN4AQ. He has some other information available that some of you might find interesting: HAM RADIO NOW - Episode Six: New Ham Band! The recently concluded WRC-2012 in Geneva produced a new ham band in the MF range - 472-479 kHz. Last Monday, Cliff W4FT and I traveled to Washington DC to talk to Brennan Price N4QX, ARRL's Chief Technology Officer and part of the team that the League send to Geneva. Brennan gave us all the details and background, and it's all on-line, waiting for you at www.HamRadioNow.TV. And we didn't send an email about it, but Episode 5 is there, too, on the upcoming QST: Digital Edition. ARRL's marketing manager Bob Inderbitzen NQ1R gives us the details on that. Starting with the June issue, League members will be able to read/download QST on-line. Ham Radio Now is viewer-supported. If you like what you see, you can contribute at www.ARVN.tv — whatever you think it's worth to you. Thanks to everyone who has contributed so far! 73, Gary KN4AQ ARVN: Amateur Radio//Video News Ham Radio Now.TV Gary Pearce KN4AQ 508 Spencer Crest Ct. Cary, NC 27513 kn4aq(a)arvn.tv 919-380-9944 www.ARVN.TV www.HamRadioNow.TV

1 0

SBARC Wednesday Nets
by Michael＠NO6O.com 28 Mar '12

28 Mar '12

SBARC Wednesday Nets -------------------- Beginning at 7:00 pm on the following linked repeaters: 146.79 MHz (La Vigia Hill) 224.08 MHz (La Cumbre Peak) Minus offset, PL 131.8 ---------------------------------- 7:00pm - 7:30pm -- Amateur Radio Newsline (www.ARNewsLine.org) 7:30pm - 8:00pm -- Weekly Club Net 8:00pm - 8:30pm -- Swap Net, hosted by Dave Milton, K6HWN ---------------------------------- Then, at 8:30pm, on 144.210 MHz, is the VHF Single Side Band Roundtable, typically hosted by Ken Owen, N6KTH. This popular roundtable is now in its fourth year. Some People start checking in early between 8:00pm and 8:30pm. For details, visit www.n6kth.com/vhf. ---Michael, NO6O

1 0

General License Class
by K6QD 23 Mar '12

23 Mar '12

TO ALL CLUB MEMBERS: GENERAL LICENSE CLASS We are planning a new General License class and the interest level appears to be nil. If you or know of anyone having interest in getting the General class license please contact me. For those unaware, the General Class is a HUGE step-up from Technician, enabling almost all amateur privileges except operation at the very bottom ends of certain HF bands; essentially CW DX only. The class will span 4-5 weeks and will be held one evening per week for ~3 hours. If you have interest in becoming prepared for & taking the General class exam, please contact me @ 805-680-2382 Mike Wapner, K6QD

1 0

SBARC Wednesday Nets - Trivia Night!
by Michael＠NO6O.com 21 Mar '12

21 Mar '12

SBARC Wednesday Nets -- TRIVIA NIGHT! ------------------------------------- Beginning at 7:00 pm on the following linked repeaters: 146.79 MHz (La Vigia Hill) 224.08 MHz (La Cumbre Peak) Minus offset, PL 131.8 ---------------------------------- 7:00pm - 7:30pm -- Amateur Radio Newsline (www.ARNewsLine.org) 7:30pm - 8:00pm -- !! TRIVIA NIGHT !! Hosted by Dave Milton, K6HWN 8:00pm - 8:30pm -- Swap Net, hosted by Dave Milton, K6HWN ---------------------------------- Then, at 8:30pm, on 144.210 MHz, is the VHF Single Side Band Roundtable, typically hosted by Ken Owen, N6KTH. This popular roundtable is now in its fourth year. Some People start checking in early between 8:00pm and 8:30pm. For details, visit www.n6kth.com/vhf. ---Michael, NO6O

1 0

Santa Cruz Island Trip
by Ken Owen 20 Mar '12

20 Mar '12

Folks: If you were thinking of joining us on the Santa Cruz Island trip (this Saturday) please sign up by Thursday. At this point, we have six sign ups, and I would prefer to go with a minimum of 10. So, contact Mike Taylor (mst56(a)yahoo.com) and sign up ASAP! Check out the web page I put together highlighting some of the fabulous sites you will see on the trip: http://www.n6kth.com/island Here are the details: SBARC Santa Cruz Island Trip Saturday March 24 Fundraiser for K6TZ Club Station! Departing Ventura, Island Packers Dock (arrive at the dock at 7:30 AM) Join fellow members and friends of the Santa Barbara Amateur Radio Club as we explore Scorpion Anchorage on Santa Cruz Island. This is a fundraiser for the K6TZ Club Station, and is sure to be as fun and popular as our recent trips to Anacapa Island. We will depart the Ventura Harbor on an Island Packers Catamaran, a large and stable vessels that makes the trip in about one hour. We often see amazing wildlife reroute, including whales and dolphins Once on the island we are treated to spectacular views of the coast, displays of historic ranch life and unique wildlife, including the island fox, a dwarf species only found on the Channel Islands! Cost: $70.00 per person, with about $20.00 going directly to the Club Station The trip will be led by Ken Owen, N6KTH, of Channel Islands Restoration, who is donating his services. To register (or for more info) contact Michael Taylor, WA6RQV, at: mst56(a)yahoo.com There is a 20 person limit on this trip!

1 0

Impulse
by Bill Talanian 15 Mar '12

15 Mar '12

[] From left, sales staffers Lee Carlander and Tracy Green; Chris Rose, director of sales/marketing; and engineers Jay Hennigan and Jessie Bryan of Impulse Advanced Communications. MIKE ELIASON/NEWS-PRESS Local firm boosts business broadband By STEVE SINOVIC, NEWS-PRESS STAFF WRITER March 11, 2012 7:58 AM Impulse buying may be taking a whole new meaning for small business owners in Santa Barbara looking for faster broadband service. At a time when businesses depend on Internet access more than ever, Santa Barbara-based Impulse Advanced Communications is investing heavily to land new clients in the region or help current customers upgrade. Some of the growth is being funded by a loan of more than $1 million (and more to tap in a bigger line of credit) from Business First Bank to fund the rollout of new service between Carpinteria and Goleta. "It should help us get into double-digit growth," predicted Dave Clark, president of the company, in a recent interview the NEWS-PRESS, as he discussed strategies to expand the customer base. Mr. Clark, a UCSB psychology grad who later ran Circuit City's IT system, said his time with Impulse dates back to when the company was a dial-up Internet provider mostly serving home users. As the landscape changed and other providers jumped onto the consumer bandwagon, Impulse, which was founded in 1996, charted a niche as network specialists, working with large local employers such as Santa Barbara Bank & Trust and Deckers. Impulse seeks to differentiate itself by addressing service gaps not offered by the larger competitors, helping to tweak many aspects of a customer's network, including phones, routers and switches. Thanks to business loans, Impulse set in motion its next-generation network when it saw Internet options for businesses on the South Coast remaining narrow while demand for bandwidth was increasing. Business Internet access comes through three pipelines: coaxial cable, traditional copper wire and fiber optics. Cox Communications owns and controls the region's coaxial cable lines and Verizon stopped upgrading its copper lines and has been focusing more on its wireless business and building a residential television network in large markets. But Verizon's traditional copper lines, which are linked to virtually every business and home in the region, presented an opportunity to telecommunications carriers with the proper licenses. So, 18 months ago, Impulse received a license which allows it to use all of Verizon's copper wire between a customer's building and Impulse's equipment. Thanks to advances in technology, Impulse is able to deploy equipment that provides fast, high-quality Internet access using copper. All the copper wire between Ellwood and Carpinteria run to six central Verizon offices and Impulse has leased space in five of them. For obvious reasons, the wires are highly secure, with cameras and badges and series of "tough tests" to gain access. "We each have our own cage locked off," said sales director Chris Rose, referring to the place where all the connections occur. Technology advances mean higher speeds and reliability don't bring sticker shock to customers. "From a customer perspective, there is a slight increase in cost, but a significant increase in bandwidth," said Mr. Clark, who hopes to expand the business to points north and south as sales increase in its home base. The company's hometown roots make entry by competitors difficult, Mr. Rose said. "That's been our point of differentiation," he said. "The level of problem solving and accountability isn't always there with the larger" companies. Having a degree in computer science doesn't necessarily lead to work for Impulse. Someone with a general networking certificate from a community college can qualify for an entry-level position with the firm. "They start with customer support for a period of time, graduate and get promoted to network operations," said Mr. Clark of the career trajectory of many of the Impulse workforce, which now comprises 30 employees. Still, network and systems engineers are on staff to help technicians learn and understand current technology. The recent recession notwithstanding, businesses of all kinds cannot stint on connectivity. As the economy recovers, any down time or delays are deadly, especially for data-heavy companies like law firms, banks and accounting firms, and those selling products and services online. "The quality of the connection is critical as a business grows," said Mr. Clark. "It's not so much the size, but the reliability of the bandwidth," explained Mr. Clark. In terms of reliability, he suggests that some clients have "highly redundant" service, which means backing up data in server farms and in clouds. To serve its current and future customers, Impulse plans to hire 10-plus additional employees over the next 16 months. While targeting small to mid-size businesses with new products are a priority, big business isn't being ignored. "They still need some love," said Mr. Rose of the larger companies. email: ssinovic(a)newspress.com

1 0

BST caps
by mst56 14 Mar '12

14 Mar '12

Not me! Michael On 3/14/2012 12:00 PM, sbarc-list-request(a)lists.netlojix.com wrote: > Send SBARC-list mailing list submissions to > sbarc-list(a)lists.netlojix.com > > To subscribe or unsubscribe via the World Wide Web, visit > http://lists.netlojix.com/mailman/listinfo/sbarc-list > or, via email, send a message with subject or body 'help' to > sbarc-list-request(a)lists.netlojix.com > > You can reach the person managing the list at > sbarc-list-owner(a)lists.netlojix.com > > When replying, please edit your Subject line so it is more specific > than "Re: Contents of SBARC-list digest..." > > > Today's Topics: > > 1. BST Capacitors (neils) > 2. SBARC Wednesday Nets (Michael(a)NO6O.com) > > > ---------------------------------------------------------------------- > > Message: 1 > Date: Tue, 13 Mar 2012 12:37:57 -0700 (PDT) > From: neils<neilv(a)silcom.com> > Subject: [Sbarc-list] BST Capacitors > To: sbarc-list(a)lists.netlojix.com > Message-ID: > <1929897093.381750.1331667477891.JavaMail.root(a)plum.impulse.net> > Content-Type: text/plain; charset=utf-8 > > Anyone have any experience using these BST capacitors for antenna tuning arrays, or tunable filters ? > > :-) neil > KE6DCJ > > ======== > Powering a 30V DAC from a 3V supply (CN0193) > Analog Devices Model Number: CN0193 > > The circuit generates a high voltage signal that controls the capacitance of a BST (barium strontium titanate) capacitor. The capacitance of a BST capacitor can be altered by applying a voltage of between 0 V and 30 V to the correct terminal. This changes the thickness of the dielectric and, hence, the capacitance. > > BSTs are often used for tuning antenna arrays or tunable filters. Clearly, there is an advantage in being able to tune these applications for example, compensating for component tolerance errors. This reference circuit has been engineered and tested for quick and easy system integration. > > Design note here: > http://www.analog.com/static/imported-files/circuit_notes/CN0193.pdf > > > ------------------------------ > > Message: 2 > Date: Wed, 14 Mar 2012 01:00:01 -0700 > From: Michael(a)NO6O.com > Subject: [Sbarc-list] SBARC Wednesday Nets > To: sbarc-list(a)lists.netlojix.com > Message-ID: > <20120314080014.KENF8874.eastrmfepo103.cox.net(a)eastrmimpo306.cox.net> > Content-Type: text/plain > > SBARC Wednesday Nets > -------------------- > > Beginning at 7:00 pm on the following linked repeaters: > > 146.79 MHz (La Vigia Hill) > 224.08 MHz (La Cumbre Peak) > > Minus offset, PL 131.8 > > ---------------------------------- > > 7:00pm - 7:30pm -- Amateur Radio Newsline (www.ARNewsLine.org) > > 7:30pm - 8:00pm -- Weekly Club Net > > 8:00pm - 8:30pm -- Swap Net, hosted by Dave Milton, K6HWN > > ---------------------------------- > > Then, at 8:30pm, on 144.210 MHz, is the VHF Single Side Band Roundtable, typically hosted by Ken Owen, N6KTH. This popular roundtable is now in its fourth year. Some People start checking in early between 8:00pm and 8:30pm. For details, visit www.n6kth.com/vhf. > > ---Michael, NO6O > > > > ------------------------------ > > _______________________________________________ > SBARC-list mailing list > SBARC-list(a)lists.netlojix.com > http://lists.netlojix.com/mailman/listinfo/sbarc-list > > > End of SBARC-list Digest, Vol 104, Issue 5 > ****************************************** >

1 0

SBARC Wednesday Nets
by Michael＠NO6O.com 14 Mar '12

14 Mar '12

1 0

BST Capacitors
by neils 13 Mar '12

13 Mar '12

Anyone have any experience using these BST capacitors for antenna tuning arrays, or tunable filters ? :-) neil KE6DCJ ======== Powering a 30V DAC from a 3V supply (CN0193) Analog Devices Model Number: CN0193 The circuit generates a high voltage signal that controls the capacitance of a BST (barium strontium titanate) capacitor. The capacitance of a BST capacitor can be altered by applying a voltage of between 0 V and 30 V to the correct terminal. This changes the thickness of the dielectric and, hence, the capacitance. BSTs are often used for tuning antenna arrays or tunable filters. Clearly, there is an advantage in being able to tune these applications for example, compensating for component tolerance errors. This reference circuit has been engineered and tested for quick and easy system integration. Design note here: http://www.analog.com/static/imported-files/circuit_notes/CN0193.pdf

1 0

2024

2023

2022

2021

2020

2019

2018

2017

2016

2015

2014

2013

2012

2011

2010

2009

2008

2007

2006

2005

2004

2003

2002

2001

2000

SBARC-list March 2012