Technical Mentoring and Elmering Net – March 2, 2017

The audio archive of this net can best be followed by downloading the .mp3 file for the appropriate date here and listening with the media player of your choice. You can move the progress slider forward or backward to the subject of interest to you.

We had another good net tonight with 13 check-ins plus net control, Ken, KA6KEN and some chat room visitors! Tonight’s subjects included:

  • Flagpole antennas, what are they and what might the cause and effect of things like yard-arms be on radio waves depending on how it’s wired.
  • What is the proper coax length in proportion to the frequency wavelength you intend to transmit on?
  • Do microwaves get refracted by trees and other obstacles? (As in Mesh networking)
  • Bruce’s, KK6SXA radio noise problem could be related to not having a PL assigned to the receive frequency.

Tune in to the SBARC TM&E Net every Thursday at 8:00 PM local (2000 Hrs) and see what interesting questions will arise or ask some of your own! All club members and visitors are encouraged to check in to the net each week and join in with questions and /or answers to and contribute the knowledge of new and seasoned amateur radio operators alike.

Technical Mentoring and Elmering Net – February 23, 2017

The audio archive of this net can best be followed by downloading the .mp3 file for the appropriate date here and listening with the media player of your choice. You can move the progress slider forward or backward to the subject of interest to you.

We had another good net tonight with 13 check-ins plus net control, Brian, K6BPM and some chat room visitors! Tonight’s subjects included:

  • Microphones – How can you tell the difference between condenser, dynamic and electret types?
  • Suggestions for upgrading to a radio that will give new hams wide versatility at a decent price (Bands, modes, base station, mobile, etc.).

Tune in to the SBARC TM&E Net every Thursday at 8:00 PM local (2000 Hrs) and see what interesting questions will arise or ask some of your own! All club members and visitors are encouraged to check in to the net each week and join in with questions and /or answers to and contribute the knowledge of new and seasoned amateur radio operators alike.

Meeting Cancelled for Tonight – Important

10:15am

The General Club Meeting for tonight, February 17,2017 is CANCELLED.

We are concerned about downed trees, mudslides and general safety issues and don’t want anyone to be out in this weather unless needlessly.

Please pass this information along to anyone you can think of that may not otherwise see our messages.

Thanks, and stay safe and dry!

Brian – K6BPM

Post expires at 1:00am on Saturday February 18th, 2017 but will still be available in the archives.

Technical Mentoring and Elmering Net – 2/16/2017

The audio archive of this net can best be followed by downloading the .mp3 file for the appropriate date here and listening with the media player of your choice. You can move the progress slider forward or backward to the subject of interest to you.

We had another good net tonight with 13 check-ins plus net control, Levi, K6LCM and some chat room visitors! Tonight’s subjects included:

  • Antennas, signal propagation and which antennas work best on which bands (especially for limited space considerations).
  • “Passive repeater” design and scope of usage to improve access to a local repeater from a challenged location.
  • Impedance mis-match, SWR, reflected power. Why do we talk about SWR so much as opposed to other parameters?

Tune in to the SBARC TM&E Net every Thursday at 8:00 PM local (2000 Hrs) and see what interesting questions will arise or ask some of your own! All club members and visitors are encouraged to check in to the net each week and join in with questions and /or answers to and contribute the knowledge of new and seasoned amateur radio operators alike.

Operators Needed for Baker to Vegas Event

Submitted by Ken – KA6KEN – My wife (Lena – no call sign), is a Deputy DA for Santa Barbara County. Her colleagues at the DA’s office participate in an annual event called “Baker to Vegas”.  As I understand it, this is a relay (foot) race that is 120 miles long, covers about four counties, two states, and 6500 square miles, and elevations from 470′ to 5495′.  There is no cell service on about half of the course.

They have a need for radio communications amongst their five “shuttle vehicles” and the “follow vehicle”, and, ideally, their coordinator (home base) in Las Vegas at the end of the run.

Communications over this distance is quite a challenge.  There are two closed repeater systems on Potosi (Vegas) and Turquoise (Baker), however, this still doesn’t cover the entire race.  I’m told by the frequency coordinator, Jeff Lee (KF6NXQ), that some
ham clubs and RACES/ACS units use the race as their annual “exercise” so they get real fancy with equipment, trailers, temporary repeaters, lots of people, etc.

Is this something anyone in the club has had experience with, and is there any interest in trying to support our local DA’s office?  They have to have their frequency coordination in by February 2 and the race is on March 25 and 26 so this is very last-minute, but I’m interested in seeing if there is interest, even if not until next year.

Because it is so late, this year they will likely have to rent commercial radios that use the MRA trunking system that probably cover 70-80% of the course.  The group supplying this system has permanent repeaters on Potosi and Turquoise and they bring out temporary repeaters at Ibex Pass and at the California/Nevada state line to support the race.  I have no idea how well this system works, and/or if the hams can do better.

Jeff tells me that San Diego County RACES puts out 30 people and supports six teams.  They use a combination of simplex and repeaters and mostly 50-watt mobile radios.

Here is a link: bakervegas.net.  I also have a power point that Jeff put together detailing the various means of radio communications (and there are a LOT used in the race… also including ham HF, CB, GMRS, MURS, satellite phones, etc.) which I can supply if anyone wants a copy.

As an aside, they also have a full-blown private APRS system that will be tracking all of the runners (via the follow vehicles) which will be displayed on findyou.com.  That said, each team has to supply their own APRS beacons if they want to participate.

Contact Ken – KA6KEN if you’re interested!

Post expires at 11:00pm on Friday March 24th, 2017 but will still be available in the archives.