Happenings

We all like to hear what other hams are up to, and we'd love for you to share some of the fun projects you've been involved in.  That's what the weekly round table discussion is for, but if you've got something noteworthy you'd like to share here too -- especially if you have pictures -- just email me the information.

Also, news of upcoming events is posted to this page.

Feel free to browse this page any time you happen to be on the site, or, better yet, click the link below to subscribe to its RSS feed* to keep abreast of the happenings of your fellow hams.

*Please note that the RSS summary doesn't always contain the full article, particularly if there have been changes made; when you receive an RSS notification, it's not a bad idea to click the article's link to view the full web page.
Also, comments are only visible after clicking an individual article; they don't appear on this overview page.

If you you prefer an email subscription to RSS, click here to subscribe to MMSH Happenings by Email.

Road trip!

posted Sep 9, 2019, 9:34 AM by Charles Boling

AD7UF and his family are on a 3-month road trip! Covering all 48 states and 8 provinces, there will be opportunities for operating from a lot of neat locations.  While he's not bringing as much gear as he'd like due to time constraints, supply problems, and spousal concerns (Michele wasn't happy when she found out that he was planning to bring his 13-lb. CAP HF rig along!) so he scaled back both radios and antennas, but he's still got enough to be fun and useful.  Focus will be on VHF, since he doesn't have an HF antenna configuration that won't get bridge-whacked, and he will be too busy to do that much operating while stationary.  Basic Amateur gear on the bus includes:
  • Front:
    • Cheap Chinese VHF/UHF radio (QYT KT-8900D) & fairly short dual-band antenna.
  • Rear:
    • Yaesu FT-897 all-band rig. VHF is attached to a 1m dual-band antenna. HF goes to a stud mount that gets a variety of generic Ham Sticks attached. A 1/4mi spool of aluminum fence wire provides the opportunity for a variety of longer antennas.
    • Alinco DR-590T dual-band rig operating primarily as a cross-band repeater for family tactical ops.  It feeds separate UHF & VHF antennas w/ a diplexer on the VHF side acting as a low-pass filter to further reduce self-desensing.
  • Plus:
    • A whole bunch of HTs for portable & supplementary use.
KF7JZN's parents are mostly following along in their motorhome, so radio is useful for commiunicating with them.  They have a KT-8900 with a mag-mount antenna attached to an aluminum cookie sheet (with a magnet on the back to help hold it) on their dash board to supplement their HTs.  Charles brought a laptop (necessary, since he's continuing to work throughout this trip) and programming cables so he can customize the radio memories for each area.  Pictures are promised; check back later!

Ham Radio Basics this Saturday - Vancouver

posted Apr 22, 2019, 12:34 PM by Charles Boling

The Clark County Amateur Radio Club will present a program that covers the basics of ham radio.  We will have presentations on Friday, April 26, from 7-9 PM that will cover radio equipment suggestions, antenna suggestions, and power concepts.  Saturday, April 27, presentations from 9 AM – 1 PM will cover portable operations, opportunities for public service, and help getting on the air.  You can attend one or both days.  The program will be held at The Church of Jesus Christ of Latter-day Saints chapel located at 11101 NE 119th St just West of Winco on the South side.  Note that 119th St is under construction, so watch carefully for the driveways across the dirt (at least it was dirt the last time I visited Winco).

After you enter the parking lot, drive to the south side (away from 119th St) and enter the glass doors.  Turn left and you should see us.

If you plan to attend Saturday, we recommend you bring your handheld if you have one. 

Questions?  Contact Delvin, NS7U.  We hope to see you there.

 

Delvin Bunton, NS7U

President, Clark County Amateur Radio Club

drbunton@comcast.net


Terminated Folded Dipole

posted Nov 14, 2018, 10:33 AM by Charles Boling

Charles, AD7UF, finally has a new HF antenna to supplement his venerable coax-fed 75M electric fence wire dipole, issued by the Civil Air Patrol, for whom he does radio communications (and was recently appointed commander of our local squadron).

[Advertisement: The Mount Saint Helens Composite Squadron meets at the Kelso airport (SWRA) and has a great bunch of cadets, but we're in desperate need of senior members! It's a great volunteer organization. If you'd like to know more, visit the CAP web site and/or talk to me!]

The antenna, model AT-FD90-800 from Alpha Tech, is a 90ft folded doublet with a big fat terminating resistor.  Having an antenna of another length with a different radiation pattern was a definite need at my place, particularly for 40m, where due to the high impedance and no transformer between the mast and my shack, 100ft of coax ate 99% of my signal.

The resistor is the magic in this antenna, though.  On frequencies where the impedance of the radiating system is high, the resistor absorbs the extra energy, wasting it as heat (bad)  and presenting a reasonable impedance, that is then transformed by a balun to roughly 50 ohms  that the rest of the system likes.  Less than 2:1 VSWR from 2-30 MHz without a tuner.

Contrary to the wild claims you may hear about such antennas, it's not going to miraculously work every frequency better than any other antenna.  It's a "Jack of all trades, master of none".  Its performance below 5 MHz is decidedly inferior to my other wire in most cases where I've tested, but it does quite well around 7 MHz, which used to make my radio huddle in agony and terror.  The real beauty (and the reason that CAP uses them) is that my radio can switch between bands very quickly without stopping to re-tune.  I am now able to operate true ALE, not the "I'm listening but you're only going to reach me on this channel" kind that I've been running for the past couple of years.

The flexibility of being able to jump to a frequency and instantly join a conversation is outstanding.  I've been able to make a lot of contacts that I would've missed with my other antenna because either I couldn't tune it fast enough, or the performance was just too poor for that particular QSO.  Sure it's a compromise antenna; all real-world antennas are compromises.  But when you see an antenna that offers a theoretical 3dB or even 13dB (2-20x) loss over another, realize that the remote station location vs. radiation pattern and the variation in atmospheric propagation, especially, often means received power variations of 1,000,000:1 (60dB) or more.

Bottom line: Don't be afraid of an "antenna for dummies" or other compromise antenna.  Which antenna's going to net you more QSO's: the one that gets used, or the one that doesn't?


PS: I'd include a picture of it, but I neglected to take one before raising it, and what few photos I found online are for older versions and don't do this one justice.  Here's a diagram, though:

T2FD antenna diagram
The page where that drawing came from has a lot more information on this and other antennas used for frequency-agile applications.


SEA-PAC Friday seminar on EmCom/Prep

posted Feb 25, 2018, 7:45 PM by Charles Boling

If you've looked at this year's mailer for SEA-PAC, you surely noticed that one of the all-day Friday seminars is on the topic of Emergency Preparedness.  Since SEA-PAC is still over 3 months away, the exact content of presentations is far from fixed.

Here's your chance for input!  What things would you like to see covered under this umbrella topic?  This is not rhetorical -- we really want to know!  Is there something that you are particularly interested in?  A weak area where you'd like more information? Or is there something you'd like to see preached to others?  Lecture, workshop, forum, whatever the best medium might be, we're interested in hearing from you.

This will be the topic of tonight's round table, but you're invited to share your suggestions any time.  Email Charles (address on "About" page) or otherwise let us know.


'Twas the night before Christmas...

posted Dec 17, 2017, 9:57 PM by Charles Boling   [ updated Dec 17, 2017, 10:02 PM ]

If you really like twisted versions of this famous Christmas poem, the last reference (which includes a couple of the others) is part of a larger collection containing 849 versions of the poem.
Here's the main index of the Canonical List.

And here's the video version of the 1st one, posted by the ARRL.

2017 ERC/CARS Xmas Party

posted Nov 7, 2017, 12:23 PM by Charles Boling   [ updated Nov 7, 2017, 12:24 PM ]


CARS Annual Meeting 

&

Portland ERC's Early Christmas Party/Potluck Dinner

Saturday November 18th, 6:00pm at the Milwaukie LDS Stake Center

8331 Cason Road, Gladstone OR 97027


Everyone is invited to the Cascade Amateur Radio Society's Annual Meeting 

Joint with the Portland Region ERC's Early Christmas Party/Potluck Dinner.

Bring the Whole Family !!!!! 

There will be Door Prizes

Each person please bring a Crazy (ed.: but tasteful) Gift for The White Elephant Gift Exchange.

Such Gifts don't have to be related to Ham Radio; but nice if they are.


CARS Elections- All of the CARS Officers for 2018 will be elected.

& hear the Portland Region ERC 2017 Update.

For the Potluck you can bring: 

  • A Crock Pot of Soup/Stew    &/or
  • A Salad of some kind             &/or
  • A Dessert


CARS will provide Soup Bowls, Plates, Cups, Utensils, Napkins, Rolls, Butter, & Ice Water.

This event is always a good time to 'Catch Up' with Old Friends and to make new ones.  Put faces to all of those Names & Call Signs you know from Over The Airwaves.

Anyone in the area of the 24 Stakes of The Portland ERC Region are Invited.

North, South, East, or West--- You are all invited.

You don't have to be a member of CARS to attend.

Who knows? Santa might even show up.

Please add this to your Calendar.


Hope to see you there!

Ken Tolliver, K7ICY

Portland Region ECS  & CARS Secretary

Fall ERC Test Canceled

posted Sep 26, 2017, 3:42 PM by Charles Boling

There will be no regional LDS ERC exercise in October. The next one will be in April.

630/2200m bands open!

posted Sep 24, 2017, 10:13 PM by Charles Boling   [ updated Sep 24, 2017, 10:13 PM ]

The new 137 kHz & 472 kHz bands are open in less than a month -- and since it requires a 30-day wait after registering to use them...

http://www.amateurradio.com/fcc-opens-630_and_2200-meters-amateur-band-pre-registration-required/

The article mentions that whether or not you plan to transmit on these bands in the near future, filling out the registration form (a link to the web form is in the article) will reserve your ability (and that of other local hams) to use them in the future, theoretically preventing the possibility of any goofy Power Line Communications stuff from cropping up in your neighborhood, and lets the FCC know that you care.

Ham Radio PR Posters

posted Sep 24, 2017, 9:57 PM by Charles Boling   [ updated Sep 24, 2017, 9:58 PM ]

The ARRL recently created a set of 6 tabloid-size posters using a "Ham Radio Is..." theme:
  • ...Adventure
  • ...Discovery
  • ...Friendship
  • ...Out of This World
  • ...Ready
  • ...The Game
Nice to have around during BSA merit badge workshops and other PR/recruiting opportunities.
http://www.arrl.org/pr-posters

Wahkiakum article on ham test

posted Jun 28, 2017, 11:37 PM by Charles Boling

It's always nice to see good press for amateur radio and local clubs:
http://www.waheagle.com/story/2017/06/29/wahkiakum-people/four-local-hams-passed-test/13199.html

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