"COMPACtenna" - fact or fiction?

Discussion in 'VHF/UHF - 50Mhz and Beyond' started by KK6QMS, May 27, 2017.

ad: L-HROutlet
ad: l-rl
ad: abrind-2
ad: l-BCInc
ad: Left-2
ad: Left-3
ad: L-Geochron
ad: L-MFJ
  1. WR2I

    WR2I Ham Member QRZ Page

    FICTION!

    I acquired a COMCRAPtenna in an estate sale lot. It appeared to be unused, but with no paperwork. There are no markings on the antenna anywhere, apart from the stick on label that only says COMCRAPtenna. An email to COMCRAPtenna, asking for info to assist in identifying this antenna model n number, resulted in a reply from Jack Nilsson. Asking questions such as, "where did I buy it?" What does the spec sheet say?" I got nowhere with this guy.

    Jack Nilsson <jackn4@hotmail.com>

    Hi Marc,
    What was it when you bought it?

    [​IMG]
    Jack Nilsson <jackn4@hotmail.com>

    About how tall is it?

    All this and then proceeds to tell me I didn't check the VSWR, which would prove nothing. Then, somehow this light bulb goes off in his head...

    ?
    We concluded that since you didn’t mention the permanent ink ‘D’ for dual band (2M/440) or ‘T’ for tri-band (2M/220/440) on the bottom recess of the antenna, that it had been removed between who had the antenna that you describe as a dead person and you.
    It was also logical to conclude that you didn’t check the antenna for SWR (which also identifies frequency/bands) per the instructions that come with the spec sheet and on the website before operation.
    Well you explained getting an antenna without purchase from someone who is deceased. We hope you have enriching experiences with COMPACtenna technology. Have a great day and a good year!

    Why have me jump through hoops if the antenna was supposed to be marked?

    This guy is full of it and so is the antenna. I swept it 100 MHz to 600 MHz on an Anritsu SM, which alludes that his antenna may be the tri-band model. Unfortunately, the VSWR bandwith is too narrow. The acceptable VSWR, is outside the 1.25 and 70cm bands.

    I may cut the thing open and post the pics. It's just a can of snake oil anyway.

    No enrichment from COMCRAPtenna here! I'll stick with my quarter wave antennas thank you.
     

    Attached Files:

    Last edited: Jan 14, 2022
    AG5DB and KR3DX like this.
  2. ND5Y

    ND5Y Ham Member QRZ Page

    See post #72 in this thread for the x-ray pictures. If you do cut it up see if the insides look anything like the x-ray.
     
  3. WR2I

    WR2I Ham Member QRZ Page

    I did see that photo. It really didn't tell the whole story, but it does give one the impression that this COMCRAPtenna is snake oil. I have seen this guy's patents. Nothing new, just nonsense "wordsmithing" that the patent office granted after a gazillion attempts, probably so the dude would leave them alone. His so-called "technology", was "invented" long before he was born.
     
    AG5DB and KR3DX like this.
  4. WR2I

    WR2I Ham Member QRZ Page

    IMG_20220114_143113.jpg IMG_20220114_144307.jpg IMG_20220114_144155.jpg IMG_20220114_143432.jpg IMG_20220114_143421.jpg IMG_20220114_143209.jpg IMG_20220114_143204.jpg IMG_20220114_143133.jpg So, in the interest of the radio art, I have exposed the COMCRAPtenna!

    After initial visual analysis, I have concluded, that is antenna is a tuned dummy load! What I found, was two elements made of copper tape, layered as a ribbon inductor with butyl rubber tape as the insulating material between layers/windings. All held together with black electrical tape and what might be JB Weld. Each of the inductors has its own connection to the NMO contact, both held together with black tape. If this is actually the tri-band model (which is unknown), it may be the two conductors that form the UHF 1/4 wave antenna radiator.

    I hope you are all enjoying your $100 COMCRAPtenna "technology"!

    Cheers!
     
    W1BR and KR3DX like this.
  5. WR2I

    WR2I Ham Member QRZ Page

  6. WR2I

    WR2I Ham Member QRZ Page

    So it seems that he still refers to himself as "Doctor Jack", when his medical license expired 20 years ago. Sounds like impersonation to me. Snake oil everywhere at COMCRAPtenna.
     

    Attached Files:

  7. WR2I

    WR2I Ham Member QRZ Page

    Have a look at my post.
     
  8. KA0HCP

    KA0HCP XML Subscriber QRZ Page

    A medical college conferring an MD degree makes him a doctor for life.

    A PhD, Doctor of Philosophy is still properly referred to as doctor despite no licenses existing, and even when he retires.

    -Is an EE no longer an engineer if he relinquishes his PE license or retires?

    -You don't understand academia, degrees and protocol.
     
  9. WR2I

    WR2I Ham Member QRZ Page

    You speak about "Dr. Nilsson" as a third person, when it is actually you, Jack Nilsson N8NDL posting. You ain't no doctor, but you might need to see one, the way you talk to yourself like you aren't there. You really believe your own BS don't you?
     
  10. WR2I

    WR2I Ham Member QRZ Page

    You don't know what I know. But, I'll give you extra credit for trying to school me.
     

Share This Page