AmateurRadio.com

Not much special going on lately. Worked some SKCC members, spent some time on 6 meters and worked my first station over 3000 km there. My weather station always seems to be in need of repair and my website’s CMS needed upgrading. Oh yes, there is the daytime job, too. Busy, busy, busy.

But, my wife was so nice to bring me a 2.6 meter telescopic whip from one of her trips to China. And so, last Saturday afternoon, while my little girl was horseback riding, I took the KX3 and MP1 with the new whip for a spin. The longer whip proved okay, although now the loading coil is much too large. Without the coil the whip needs to be shortened to be resonant on 12 meters and lower. I made four QSOs: HL0HQ (the KARL HQ station), JD1BLY (from Ogasawara), 7M2ALZ and JL1NMB. The resident ostrich took interest in my setup and decided the counterpoise set was a nice toy to play with and so he took it from me. Who said QRP is not dangerous? Power levels may be low, but those beaks do have a lot of force in them.

A curious ostrich interested in my counterpoise set.

Took a drive down to Superior WI yesterday May 3rd to take part in the A.R.A.C.  Swapfest in Superior Wisconsin. Got up at 5 am, picked up Wayne VA3WRL and Clarence VE3WCW and we proceeded for our 3.5 hour tour down the lake-shore. Stopped in Two Harbors for breakfast before heading into Duluth MN and then over the bridge to Superior. Had rain/drizzle from Thunder Bay to Two Harbors but was sunny after that. Arrived at the fairgrounds on Tower Ave. and went into the building to see what was on the tables for grabs. Lots of vintage radio gear, computer parts, hand helds, coax and almost anything that folks have been collecting in their garages that they wanted to get rid was there. There were having hourly draws as well for prizes. Had a chance to talk with lots of the folks that I have not seen in a while and the Thunder bay group had a good showing at the swapfest as well.

73 Fred VE3FAL

Thunder Bay, Ontario

While this may not be a surprise to those with electrical engineering backgrounds, this is a first for me — never seen this sort of thing before. While the effect is very cool, it’s potentially very dangerous and you shouldn’t go jumping the fence at the neighborhood 50kW shortwave station to try it out.

Wikipedia on plasma speakers:

Plasma speakers are a form of loudspeaker which varies air pressure via a high-energy electrical plasma instead of a solid diaphragm. Connected to the output of an audio amplifier, plasma speakers vary the size of a plasma glow discharge, corona discharge or electric arc which then acts as a massless radiating element, creating the compression waves in air that listeners perceive as sound. The technique is an evolution of William Duddell‘s “singing arc” of 1900, and an innovation related to ion thruster spacecraft propulsion.

The effect takes advantage of two unique principles. Firstly, ionization of gases causes their electrical resistance to drop significantly, making them extremely efficient conductors, which allows them to vibrate sympathetically with magnetic fields. Secondly, the involved plasma, itself a field of ions, has a relatively negligible mass. Thus as current frequency varies, more-resistant air remains mechanically coupled with and is driven by vibration of the more conductive and essentially massless plasma, radiating a potentially ideal reproduction of the sound source.

After doing some looking around, I realize that I’ve seen a similar phenomenon in the past while visiting the Boston Museum of Science — the singing Tesla coil!  Here is a fun example:

(via Reddit)

Here’s a video by Dennis Blanchard, K1YPP who is also the author of “Three Hundred Zeros”

Dennis hiked the Appalachian Trail, among other places and has lived to tell us all about it.  If you haven’t read his book, then you’re missing a good read.  While there’s not a whole lot in devoted to Amatuer Radio, it is a good read nonetheless, and inspiring, too.

72 de Larry W2LJ
QRP – When you care to send the very least!

Paul Signorelli W0RW posted this to QRP-L yesterday. It is entitled “Top 10 Steps for QRPttF Operation”.  This is SO good that it needs to be shared with those who might not subscribe to QRP-L. Paul has spent many a year operating outdoors, particularly pedestrian mobile.  Paul has a wealth of tribal knowledge built up here and this is good – very good, but often overlooked advice.

Here are the Top Ten Steps that I take for successful QRP Portable operation:

1. Propagation and Band Activity.
When you operate portable you want to work as many people as possible so the band conditions must be good. This means that you have to keep track of the propagation conditions before planning an operation. I try to look for propagation predictions for the band I plan to operate on but they are not very reliable. I check the QSL Net propagation site at <http://dx.qsl.net/propagation/>

The flux is always changing, so before I pick a date to operate, I monitor the bands at the same time that I plan to operate. The Absorption Index is also a key factor, I never operate when the “A” Index is above 6. I also use the NCDXF beacons see: <http://www.ncdxf.org/beacon/beaconschedule.html>

Trenton Military (15034 kHz) or CHU (14670 kHz) for 20 Meter propagation checks. Coastal stations might use WWV/WWVH on 10, 15 20 and 25 Mhz.

20 Meters is best for day time country wide propagation. 40 and 80 Meters are good for night time operation. I always try to avoid contests and other busy periods. Checking the QST Contest Calendar helps to insure the band is going to be clear. Check your desired frequency in advance, you don’t want to pick a frequency that is used for nets, traffic handling or RTTY.

2. Weather Conditions.
The weather forecasting is really good, so this is easy.
Try <http://www.wunderground.com/>
I look for warm temperatures and no wind. If it is going to rain don’t get too far away from a shelter.
Check your local web cam.

3. Honey Doo Items.
Always check the XYL’s honey doo list and make sure you have a valid Pass for the day.

4. Location and Road Conditions.
Try a your local National Park <http://www.nps.gov/findapark/index.htm>, If you are an Old Timer you can get a lifetime Pass. Always check the road and site conditions before going out in the field. You don’t want to drive hundreds of miles to find out that the Capulin Volcano road is closed by snow. Canyon roads can have snow or land slides, Pick an open space operating site, canyons are not good for QRP operating. If you are going to operate Pedestrian Mobile with a whip you will want to find trails that don’t have a lot of over hanging, antenna eating branches.

5. Equipment Readiness.
You need to check out your equipment right before you head out to your operating site. This prevents leaving behind some critical item. Needless to say, you should have your antenna all pre-tuned before you leave. My radio is always mounted to a backpack and is always ready to go. The LiIon battery is always charged but I always take a spare. I just need to put the back pack into the car, with the antenna and counterpoise. The accessories should also be checked: microphone, earphones, key, SWR meter, pen, log, watch, hat, gloves, coat, etc.

Make an equipment checklist.

It is good to charge or have a spare accessory batteries for your computer, keyer, SCAF, HT’s, etc.,
and a spare radio, clip leads and duct tape for contingencies.

6. Vittles.
I take water, lunch (GORP) and my VHF HT in a fanny pack.

7. Operating Announcements:
I try to post my operations on the reflectors a day before the operation. When you post too far in advance, people forget and when you post right before the operation, some people don’t get get the notice until after your are finished. I always try to be on my exact posted frequency (or alternate) at the exact time so people don’t get stood up. Posting your operating times gives you more Q’s. It is no fun running your battery down calling CQ with no responses. QRPspots, HFnow, GORC, QRP-L, SOTA Summits are good places to list your operation, as appropriate.

Post your schedule in GMT (Universal Time/Zulu time) as well as your local time.

Also post details about your operating location, links to pictures, trail maps, QSL Information, will be helpful, etc.

8. Prep Your Vehicle.
Put gas in your tank !

9. Initial set up.
When I arrive at my operating site, I set up my rig , attach the antenna, and check power and my operating frequency. When operating Pedestrian Mobile, I tune my whip and dragwire, put on my backpack and I am ready for the trail.

10. Safety.
Always be prepared for adverse conditions. You might need rain gear, snake proof boots, a map, GPS, etc. Always give someone your travel plans. Take your cell phone or an HT that will hit a repeater.
Be safe !
————

For more detailed information on Portable and Pedestrian Mobile operation get WA3WSJ’s Amateur Radio Pedestrian Mobile Handbook. He has made his First Edition Handbook free at: http://w3bqc.homestead.com/W3BQC-Library-Contents.html

That’s it, the Top Ten Steps for QRP portable operating. If you are addicted, you can consider this your 10 Step Program.

Paul w0rw

Thanks for sharing your wisdom and knowledge, Paul!

72 de Larry W2LJ
QRP – When you care to send the very least!

It was a perfect day for a hike up to Knox Mountain. I walked up after lunch and worked Ukraine, Italy and Portugal.

The first bridge crosses the brook a few minutes into the hike. It’s collapsing. One of the main support timbers has crashed into the water. The whole thing is sagging… I cross carefully.

The trail meanders through the woods alongside of the brook. It’s a glorious adventure. Huge pine trees tower above the path.

It’s about 50F today with some clouds. I’m looking for a way to cross the brook at the top end of the trail. The second bridge is gone and a board we placed across the rocks last year has washed away with the snow melt. I find a place about a quarter of a mile from the pond where I can jump safely across the rocks.

Alongside the brook, at the bottom of a steep hillside, I found an area covered with bright yellow colts foot flowers. Within a few minutes I reach the dam and the pond comes into view.

I walk around to the opposite bank and toss my line over a high cherry tree near the cabin. I pull up a 33 foot wire. I use the earchi.org 9:1 unun connected to the KX3 and run 5 watts.

I tune up on 15 meters and hear Dima, UT6UA in the Ukraine. We exchange reports and he gives me a 569. He’s a 599.

Next I work Walter IK5ZWU in Italy. He’s also a strong 599 and gives me a 559. Then I switch to 20 meters and call Oleg CT7/RC2A who is portable in Portugal. His signal is excellent and he gives me a 569.

I sit for a few minutes enjoying the view before I pack up. It’s been four months since I was here last. You can see why it’s a favorite spot.

Just days before Easter in Thunder Bay, Ontario and suffering from severe cabin fever I decided to take the radio outside and see if I could set up and make a contact. I took the VX1210 outside to the picnic table, put one 33’ chunk of wire about 10’ up in a spruce tree, put the other 33’ piece along the ground underneath for a counterpoise and went to 17 meters…As I tuned across I heard all kinds of stations with a huge pileup located above 18.075… I tuned down just a bit to hear OK2AN Vasek in Kunstat Czech. Calling CQ with no takers…so I fired up the straight key with cold hands, sent my call and he came right back to me…He gave me a 569 and he was an easy 599.. Told him I was running 5 watts out and he acknowledged that on the next go round. We talked about 10 minutes and then he continued on. So in all the time it took me to set up I was able to make a QSO with Czech. With no problems at all with the VX1210 at 5 watts…what a blast

Fred Lesnick
Thunder Bay, Ontario