Ciro Mazzoni Stealth Loop Review

Discussion in 'Videos and Podcasts' started by WD9DD, Dec 23, 2019.

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  1. WD9DD

    WD9DD Premium Subscriber QRZ Page

    Hi Everyone,

    I posted my review of the Ciro Mazzoni Stealth Loop. Overall, I am very pleased with its ease of use and performance. I am in a very restricted HOA, and this loop is less visible than other designs, and it tunes automatically.

    Russ WD9DD
  2. K4PP

    K4PP Ham Member QRZ Page

    Great video review of your stealth STL. I have used my home built STL /100 watts and also notice as you stated, the compromise of receiving many signals you just can't reach on transmitting. I have accepted this as demonstration of the inefficiency of the antenna at producing a high enough signal under all given conditions between the two. However, this is not to say anything is wrong with the STL antenna, it just highlights the compromise. I have run contest DX with my loop at 10watts and was amazed at the contacts. But I have also experienced the doldrums as well at 100watts.

    An S9 received signal across the 50 ohm terminal of our radio is ~50uV (.00005V), S1 is ~0.2uV (.0000002V). The receiver is excellent at presenting this. Unfortunately the only things we can control in ham radio begin at the rig and end at the antenna (or vice versa).

    I have no HOA issues but I am always using some contraption for an antenna, never efficient, so I am always grateful the other ham can pull me out.

  3. KE5QY

    KE5QY Ham Member QRZ Page

    Hi Russ, I purchased the Stealth antenna and can't find a way to get it to take more than about 15 watts. I've moved it around from a grassy yard, driveway, set it on my truck's hood and put it on a fiberglass table with and without a reflective service. The ATU always shows a good SWR (<2.1), but the meter on the rig (and an external meter) goes off the scale as soon as the power is above 15 watts). This is on PAK31, SSB, and CW. Any ideas on how to get this antenna to take any power?

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