Update on the W3EDP Antenna.......

A few years ago I wrote a blog entry on the W3EDP Antenna (HERE).  That article seems to be one of the more popular ones I have posted according to the stats for this blog.  The W3EDP is a good multi-band antenna that gets a bad rap from some sources, but it doesn’t deserve it at all.

Recently while surfing the net I can across a couple of articles written by Fred Benson, NC4FB, about some experiments he had conducted using the W3EDP antenna.  Knowing how popular this antenna is with the portable operators in Eastern Ontario, I had a good read of them.

These articles can be found here:

http://www.nc4fb.org/wordpress/w3edp-multi-band-antenna/

Http://www.nc4fb.org/wordpress/optimizing-the-w3edp-antenna/

There is some interesting information in those articles and I decided to experiment on my own.  I build my first W3EDP several years ago, and have used it mainly for Winter Field Day and Chillycon, places I want to get a working antenna up fast.

I chose to try the twin radial version, one radial of 33’ that is put in line for use on 80m and 40m, and a 17’ radial that is used for 20m to 6m.  Only one radial at a time is used.  Used with a 4:1 balun with these radials the antenna works like a charm.  I’ve also tried it with a 9:1 balun with success as well.  I’m going to use my analyser and record the difference between the two different baluns, and I will post that information here.

This antenna can be set up in any fashion that you like, inverted L, inverted V, sloper, or as a flat top, it works very well in any configuration.   It’s definitely worth while building and having in your antenna arsenal.

Another good article can be found HERE

More real experimentation is needed on this antenna.  Once the weather warms up I can get back at this..........hopefully next weekend! 

CQ WW WPX Contest 2015

Well, it's over for another year............let's hope CQ Magazine manages to survive and sponsor it again next year.

Conditions when we kicked off at 0000Z Saturday were just great.  Within minutes I had worked ZL2IO in 10m and got him on the first call with 10w.  New Zealand was quickly followed by Moldova, San Marino, French Guiana, Japan, and Morocco, and I had a blast!

After a few hours sleep and coffee with the boys, it was up and at them again Saturday morning.  The propagation numbers for the morning were SFI=137. SN=109. A Index=8, and the K Index= 3.  Bands were very noisy and had some QSB.  On 20m I could only hear US stations calling for Europe, 15m was full of Europeans calling North America, but they weren't hearing us calling them.  The only decent band was 10m and that was full of Caribbean stations, and I think I worked them all.

Again my three big bitch subjects have to be mentioned.....Hispanic stations giving their callsigns at triple the speed of light.  These guys need to understand that if we can't make out your callsign we are not going to work you.  Then there were the LIDS tuning up right over the calling stations....why do they do this?  And then there were those "Alligator" stations again who were all being received here at 59+++ yet they couldn't hear the stations replying to them at all.  More proof that 1500w is no better than 100w at times.

The main band in use on Saturday was 10m and it was pretty good.  I had the occasional foray to 15m and 20m but really didn't have enough luck there to stick around.  40m opened up in the evening and I made a few good contacts into Europe there.

Sunday was a waste of time.  The bands never seemed to open here, and when they did they had some pretty good deep QSB on them.  The propagation numbers on Sunday were the same as on Saturday.  10m and 15m seemed to be totally dead most of the time with not a station to be heard on them, and 20m was full of US stations calling CQ looking for Europe.

My final score was 134 contacts with 110 multipliers, and I worked 81 countries.  So I guess overall it wasn't that bad.....the lack of constant action just made the weekend drag on and I found that it just wasn't very enjoyable this year for me.

So, when's the next contest ???????

Problems with an IC-7000

One of the members of the Frontenac Radio Group, my local club, had an issue yesterday with his ICOM 7000.........the radio would turn off as soon as he modulated on transmit.  After an incredible period of frustration checking coax connectors, RF feedback in the shack, too much mic gain, too much compression and reading the service manual for clues he ran across an article in QRZ that mentioned a possible voltage drop.

Interestingly, as soon as he spoke into the mic on full power (100 watts) the current should be about 15 to 25A and the voltage should remain constant at 13.8 to 14.0 volts, if not , the ICOM shuts down and then reboots in a few seconds.

The ICOM power cord has two (2) 30A inline fuses. The article suggested that one should pull them (they are auto style bayonet type) and check the lugs for any corrosion or water damage.  He pulled both fuses and thoroughly cleaned the lugs and reinstated them back in the power cord. Voila, he had full power and the rig did not turn off.

It seems the ICOM is very voltage sensitive below 13 vdc and will automatically shut off. When he tried to power up the transmit mode there was a demand for high current and the resistive contacts made by the fuse blades dropped the voltage below 13 volts and the rig shut down. 

So there you have it, an easy fix to a very frustrating issue.  Hopefully Derek's experience will save you from learning some new swear words if this happens to you and your IC-7000.

WL2K Mobile

The VE3CLQ digital Go-Box

It was a pretty good day yesterday, the Frontenac Emcomm Group held their first WL2K deployed exercise of the year after doing a lot of RMS Express classroom work, and I deployed up to Perth Road Village, about 28 km north of Kingston.

We had eight stations up and running on the air, several from their home QTH and several from deployed locations around Frontenac County.  Over the past 18 months we have been building up a digital network here so we can stop using the archaic ARRL message forms and take Emcomm into the 21st Century.

So far in Frontenac County we have the following Gateways and Nodes:

VE3UDO-7, located in Clarendon Station this Node covers all of Northern Frontenac, most of Northern Lennox-Addington County, and a good portion of Lanark-North Leeds.

VE3FPN-7, the Node is located at the Sydenham Firehall and covers all of Central Frontenac as well as most of Central Lennox-Addington County.

VE3FRG-7, this Node is located in South Frontenac and covers all South Frontenac, the Frontenac Islands, the City of Kingston, South Lennox-Addington County, and Northern Jefferson County in New York State as far south as Watertown.

VE3MNE-10, this Gateway is located in West Kingston and covers a very large area.  The Gateway is able to connect to all of our Nodes.

VE3DTG-10, this Gateway is located in Central Kingston and is able to connect to our Nodes.

The Frontenac Club recently authorized the purchasing of equipment to build two portable Nodes which will help fill in a few holes in our coverage, and they will be able to be moved and placed where they are most needed to extend our coverage in an emergency.

All of our WL2K Gateways and Nodes operate on 145.070 and are on the air 24/7/365.

My Digital Go-Box consists of a Motorola CDM-1250 VHF radio along with a Coastal ChipWorks TNC-X and a ACER Notebook.  It performed very well.

We had a few learning experiences, we found that the Gateways will support heavy traffic with little problem.  The Nodes did get overloaded so we have a few issues to work out there.  Overall we passed the traffic we were supposed to with only a few hiccups.  It was a good training exercise and I'm looking forward to the second half of it in April.

Aurora Bounce

Interesting times on 6m tonight.  I spent a pleasant hour bouncing signals off the Aurora.  There were many stations calling from all over the US and this was the first time I have ever heard the Aurora Flutter.


Aurora Flutter normally occurs when radio signals are reflected from the auroral curtain.  SSB signals that are reflected sound very raspy, sound like the other operator is talking in a quiet whisper, and are difficult to understand and tune in.


At 2300 UTC the A Index was at 100 and the K Index was 7.  I have never seen the A Index that high before.