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The Monster is Deaf

80m Apartment HF- The Monster in My Bedroom

Taming the Monster

Screen Shot 2016-08-22 at 18.57.53

One thing that can be said is that ham radio experimentation is never dull, this is doubly true if the experimenter lives in an apartment in a high rise building. After creating the monster mag-loop antenna in my bedroom and tuning it for resonance and best SWR, it turns out that it hears RF (hash) really well but can’t hear a signal that my little mobile whip mounted on the balcony rail can hear well. Seems that my suspicions that the building is a faraday cage may well be true or at least that the antenna capacitively couples to the building making it deaf to external signals. Unfortunately the loop is far too big to put on the balcony rails so time for plan B.


  1. Felix vk4fuq
    August 22, 2016 at 9:13 am

    G’day mate, a friend of mine in Canberra had a very similar issue living in a townhouse arrangement. I suggested a Delta Loop mounted outside (if possible), any way he could mount it! He ended up putting up a ‘semi horizontal’ Delta Loop which turned out to pick up very little noise, and worked extremely well. It was ‘cut’ for 20 m, but broad-banding it, if fed with balanced line should be quite possible.

    • vk2kmi
      August 22, 2016 at 9:23 am

      No can do Felix. Not permitted to hang anything outside at all. I am surprised I have not been dobbed in for my multitap whip on the pool cleaner pole. I put it out after dark and on weekends only.

  1. September 6, 2016 at 9:15 pm

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