Part 2: Condo antenna challenges.

 

The MFJ loop covered and ready to go into service.

 In part 2 of antenna challenges, I want to dive into living in a condo and getting on the air. Many amateur operators at some time have found themselves moving into an apartment to save for a home or downsizing into a condo when the house has grown too big. 

This lifestyle does not mean the radio hobby is tossed. Most of us find our radio hobby adds pleasure to one's day. For me when I was in a condo it meant just another hurdle to overcome toward getting on the air. In my readings, I have seen hams who have erected wire, mobile whips and so on. I have never tried any of these and if you have please do share what you have tried. The condos that I have lived in were heavy on condo cop protection and the list was long as to what could and could not be on a balcony. One of the items on the list was antennas and as for me, I look at that as where there is a will there is a way!

Yearly checkup


 In all the condos I have lived in I have always had a balcony to take advantage of for an antenna. After investigating many antennas the best solution (a pricey solution) was a mag loop antenna for the balcony. It offered a small size, if needed it could be taken in and out from the balcony and as well its multi-band antenna. In the past, I have had mag loops such as an AEA isoloop, Chameleon P-loop and Alex loop. I planned to leave the loop on the balcony and not have to run in and out to tune the loop. I ended up purchasing the MFJ 1786 mag loop and this loop gave me the desired remote band tuning I wanted. I then purchased a tripod to mound the loop and next was how to conceal the loop. I ended up getting a patio furniture cover which looked great and to the condo cops, it was just another piece of patio furniture on the balcony. I was thrilled the cover did not affect the SWR at all as I was prepared to remove the cover during operation and then cover it once done. The mag loop had to be moved around the balcony for the best overall SWR. This took some time and once done I marked the balcony floor with a permanent marker. Also in the front of the loop is a round copper wire and by changing its shape also can help with improving the SWR.

Changing the shape improves SWR

This way when it was stored in the corner during non-use I was able to put it in the right spot for best operation. The loop was very fussy and putting the loop in the exact spot was important for the best possible SWR. The loop was tried both in the vertical and horizontal position. I was not able to get a decent SWR when the loop was mounted vertical. I ended up using it in the horizontal position. This was also great for the cover as it looked like a patio table I was covering. I used the Comet CTC-50M (flat coax cable) to feed out the sliding glass door so the coax would be permanent as well. This setup allowed me to place the antenna in position and start operating. Again in this configuration, I was strictly CW and I also added digital communications as well. I admit it is not an ideal situation but it got me on the air and making contact.
In my third and final antenna challenge post I want to share some other antennas I have tried some failed, some worked and others were crazy and worked. After using the loop for a short while I became very fast at tuning the loop. I also found in the summer if the humidity was high it would affect the SWR. Once a year I took the loop in for an inspection and remove any bugs that made the loop home.

Mike Weir, VE9KK, is a regular contributor to AmateurRadio.com and writes from New Brunswick, Canada. Contact him at [email protected].

10 Responses to “Part 2: Condo antenna challenges.”

  • Dave KF6XA:

    I’m amazed that a magloop laid flat would radiate in any direction other than straight up. And maybe down: is there anything metal below the balcony that might reflect RF outward?

    Does it make any difference if you rotate it around its then-vertical axis?

  • Mike VE9KK:

    Good afternoon Dave and thanks for the input. Below is a link which provides a picture of the loop in a horizontal position.

    https://www.pinterest.co.uk/pin/554083560389842937/

    73,
    Mike
    VE9KK

  • Allan, WA9IRS:

    Hi Mike,
    I was wondering if you had tried the Gutter Antenna option? While we don’t have a HOA here, there are a lot of neighbors with too much time on their hands if you know what I mean. As a result to keep my operating as undetected as possible I tried a gutter antenna, I used the “pop-rivet” method of connecting the downspout to the actual horizontal gutter for electrical continuity and, using an antenna tuner I’m able to work amateur frequencies below 40 meters with no trouble on CW and digital. Output is usually less than ten watts and the gutter loads up just fine along with a good earth ground. This can be a very stealthy antenna if you connect the coax behind the downspout, with sheet metal screws, this makes the coax almost impossible to see at any distance. Great to read about your experiences!

  • Mike VE9KK:

    Good morning Allen, in the past I have tried the gutter antenna a few times and with good results as well. In my last installment of the HOA antenna series I will be going over some of the things I have tried including the gutter mount antenna.
    73,
    Mike
    VE9KK

  • Dave K8WPE:

    Did you have any issues with the MFJ mag loop with construction, parts failure, etc? I have read many have had to “fix” theirs before it would work. I have had to check and repair poor soldering on some of my MFJ products.

    I am lucky. Where I live I am “king of my property” (except for the lady I have lived with for 51 years) and have little neighborhood noise.

    Dave K8WPE

  • Mike VE9KK:

    Good morning Dave and thanks for taking the time to read the post and leave a comment. The loop was not without issues and when I first opened the loop and set it up I had an issue with one of the tuning push buttons on the control box. It was fixed with a soldering iron rather than dealing with MFJ. I then had an issue with the capacitor fins on the loop as some were touching and would give me issues sometimes when I was tuning the loop. I adjusted them carefully and that issue was fixed. Other than that I had no other issues to speak of. Now back then MFJ really was the only one offering a mag loop antenna. Now there is great choice (that comes with a steep price) and the workmanship is much better.
    73,
    Mike
    VE9KK

  • Bill KI7HYI:

    When I was a 17-year old CB radio hobbyist, I lived in the basement with a ceiling a couple of feet above the ground outside them. I experimented with a square loop antenna placed at the junction of the walls and ceiling, that I managed to load to a 1:1 VSVR match. It received a lot better than it radiated in town, but did both better in DX than locally. Since I hadn’t gotten very interested in shooting skip, I ended a very educational experiment shortly thereafter.

  • Mike VE9KK:

    Good morning Bill and nice to hear from you, there are lots of us that had our introductions to ham radio via CB radio. At one time when I was young CB was the craze.
    73 and have a good weekend.
    Mike
    VE9KK

  • Elwood Downey, WB0OEW:

    I have the same antenna, and had similar issues at first. But it’s been up for over ten years and still works very well overall.

  • Mike VE9KK:

    Good morning Elwood and very nice to hear from you, as for me as well once I found and fixed the minor issues I had mine for many years of great operation.
    73,
    Mike
    VE9KK

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