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Before I purchased my Hustler 4BTV vertical antenna I was using a 45 foot End-fed antenna. I have kept the End-fed antenna coiled up and ready to go along with the coax still attached. The Hustler vertical only gives me 40, 20, 15 and 10m which is great for contesting BUT if I wanted to venture on to other bands it would mean using the End-fed antenna. Also during high wind storms or freezing rain, I have taken the Hustler vertical down and left with no antenna. I have been thinking of bringing the End-fed antenna back to life and using it when the Hustler is down due to weather and to venture on the bands the Hustler does not cover. 

I rehung the End-fed antenna recently to run it through the paces with my antenna analyzer to make sure after sitting unused for so long there were no issues. It checked out just fine and the SWR was decent and where it was a bit high my trusty LDG AT-200pro II would look after it. The main obstetrical for me is the proximity of the two antennas when they are both up at the same time. My next test was to connect my End-fed antenna to my Daiwa CN-901 antenna port and a 50-ohm dummy load to the radio port. I then wanted to transmit 100 watts into my Hustler 4BTV antenna and see what type of reflected power the Daiwa CN-901 SWR meter was showing. Below are the results for 40, 20, 15 and 20m on the 20 watts scale.

40 Meters

20 Meters

15 Meters

10 Meters

The reflected power was not significant and 10m was the highest. I plan to disconnect whichever antenna I am not using and connect it to a 50-ohm dummy load. In the future, I may prefab a 12-volt relay to switch between each antenna and use the relay contacts as the isolation point. For now, it is going to be the dummy load solution.

Alpha Delta DX-EE

 Many Amateur radio ops now find themselves in a neighbourhood, downsizing to a condo or moving to an assisted living complex that is ham radio antenna unfriendly. I have lived in many antenna challenged, HOA and condo rules that outlaw antennas. But I have always managed to get on the air using HF and enjoy the hobby. Over the next few posts, I am going to share how I accepted the antenna challenge and kept the HOA hounds or condo cops from having their heads spin backwards. Today let's look at a situation that involves home HOA hounds or townhouse condo cops. 

In the neighbourhoods I have moved to I always get a copy of the rules. (HOAs and condos have more pleasant words than rules) But let me start by saying I am not against having common understandings (rules) as it can control some funny things that can pop up in uncontrolled neighbourhoods or condos. In most of the rules I have read regarding antennas, it boils down to you can't have them due to safety, how they look and the size. The way I see it is if it's safe, no one see's it and it's small then we are good to go with an antenna! 

The first big hurdle is out of sight, as with amateur radio an HF antenna can be a tough one. For 16 years I lived in a townhouse which was not antenna friendly. I found we had a very large attic and then the next challenge was what to put up there for HF operations. What I tried was 2 mobile whips configured into a dipole. This had a very narrow bandwidth and only a single band as I could not set up more than one due to space and interaction. A band change meant getting up in the attic and doing the whip change. That idea was deleted due to attic heat in the summer and just getting up and down from the attic. 

Electric fence stand-offs

My goal was a multiband antenna that was small and could be left in the attic and forgot about. I committed to a dipole antenna from Alpha Delta the DX-EE model. This was a 10-40m antenna that was 40 feet long. Now my attic is nowhere close to being 40 feet long but I ended up installing it in a "Z" configuration. To secure the antenna in the "Z" configuration I used electric fence standoffs. Also, I added a 1:1 choke balun at the antenna feed point. This antenna served me without issue for years and it was out of the elements from the weather, out of sight and got me on the air. As a sidebar, I only transmitted at QRP levels as I did not want to have any issues with those on either side of us in the townhouse.

DX-EE

Some of the challenges were:
The antenna had a narrow bandwidth on 40m but the Elecraft K3 tuner looked after that. As well using the Elecraft K3 tuner I was able to also use the WARC bands as well.
I picked up very bad band noise from a Plasma TV but that was fixed with an MFJ noise-cancelling unit.
Getting the coax from the attic to the radio room. The room was on the second floor and I ended up putting the coax in the wall and out in the radio room.
Securing the antenna for a "Z" configuration. As mentioned I used electric fence stand-offs. 

Getting the best bang for each watt of power meant CW and not SSB. That began my journey of re-learning CW. Also fast forward to now there is also the digital modes you can use. 

 The next post (part 2) will be dealing with my condo apartment antenna challenges.

Lower section before balun install.

I also made the box with room on the side as I knew I would be adding the choke balun to the mix. It's going to be painted white to mix in with the snow when it comes and I will keep on top of shovelling the snow on and around it just in case the antenna has to come down due to windy weather.
As said before to remove the box ultimately all that has to be done is 4 deck screws removed and the side cover and half of the top cover comes off and the box can be removed and stored for the summer. In case of poor winter weather, 2 deck screws are removed and half of the top cover is removed and the antenna base is exposed. 

Room for the Balun

Completed box to be painted

The following footprints are of my CW signals on 2021-March-14 at about 04:00 to 04:20 UTC.

Click on this image to see a larger version of this image:

Location: EM89ad – Ohio
Antenna: OCD (Off-center Dipole)

Description of Antenna:

This is an off-center dipole, with the two legs running East-East-South (approximately 125 degrees of North), and West-West-North (about 306 degrees on the compass). The westward wire (leg) is approximately 107 feet in length, while the eastward leg is about 95 feet in length.

These legs (an off-center-fed dipole) is directly connected to about 90 feet of 450-ohm ladder line, which is hanging directly below, vertically, the feed point. The feed point is 50 feet above the ground.

The ladder line terminates (at the 12-feet-above-ground point) to a 4:1 current balun. This current balun then connects to a 100-foot LMR 50-ohm coax, which is running into the radio shack. It is connected via an antenna switch to my Icom IC-7610 transceiver. I am transmitting a 100-watt CW signal using an Icom IC-7610, in the following format:

TEST TEST TEST DE NW7US NW7US NW7US

The Reverse Beacon Network reports any spotting of this test transmission. The beta mapping interface, at http://beta.reversebeacon.net/main.php, then maps the resulting spots. To learn more about the RBN, visit http://beta.reversebeacon.net/index.php, or, http://reversebeacon.net/index.php.

I show the 20-, 30-, 40-, 60-, 80-, and 160-Meter band footprints.

I’ve been capturing these CW transmission spots, at different times of the day, today. I’ll get data from several days, at regular intervals, and create a overview of how the antenna appears to be working during this month and under these propagation conditions.

73 de NW7US dit dit

..

The retired W1SFR

Ultimax size difference

Ultimax is up.

80.              4.000.        7.0
80.              3.500.        8.1
40.              7.001.        1.8
40.              7.070.        1.8
30.              10.100.     3.3
30.              10.150.     3.3
20.              14.001.     4.6
20.              14.070.     4.6
17.              18.068.     2.5
17.              18.168.     2.5
21.              21.001.     1.5
21.              21.070.     1.5

80.              4.000.        6.5
80.              3.500.       9.1
40.              7.001.       5.2
40.              7.070.       5.2
30.              10.100.     2.2
30.              10.150.     2.2
20.              14.001.     4.9
20.              14.070.     4.9
17.              18.068.     2.7
17.              18.168.     2.6
21.              21.001.     1.6
21.              21.070.     1.5

40.              7.001.        1.9
40.              7.070.        2.5
30.              10.100.     4.4
30.              10.150.     4.5
20.              14.001.     4.5
20.              14.070.     4.3
17.              18.068.     1.5
17.              18.168.     1.5
21.              21.001.     1.8
21.              21.070.     1.8