New DIY Antenna Analyzer RigExpert AA-30.Zero(0.06 - 30MHz)

Discussion in 'Amateur Radio News' started by UT0UN, Nov 6, 2017.

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  1. UT0UN

    UT0UN Ham Member QRZ Page

    K8AI, KK6NOH, SV2EVS and 2 others like this.
  2. DG2MDJ

    DG2MDJ Ham Member QRZ Page

    KA2PTE and AG5DB like this.
  3. KB6NU

    KB6NU Ham Member QRZ Page

    I bought and built this antenna analyzer from Box73. The kit is really just final assembly, and it went together in about an hour. I haven't had a chance to really put it through its paces yet, but it look like a great instrument. One negative, however, is that there's no way to connect it to a computer to do any fancy analysis. But, that shouldn't be a deal breaker.

  4. W1PJE

    W1PJE Ham Member QRZ Page

    FYI, we have been extensively using the Box73 analyzer and I highly recommend it for quality, calibrated results. It will not connect to a computer and has limited ability to save sweeps, but it's very handy and the measurements compare very favorably with a $$$$ Agilent FieldFox unit. (Comes with open/short/load cal kit!)
  5. PU2OLT

    PU2OLT Ham Member QRZ Page

  6. KF2ZO

    KF2ZO XML Subscriber QRZ Page

    Good video explaining the product and its capabilities. However, I find it odd to see the board nicely packed in Anti static bag is being unpacked and shown with hands without static straps! Not a good idea in locations where static electricity is prevalent. The board seems to have LSI chips sensitive to static and subject to damage if handled improperly.
  7. G0WXU

    G0WXU Ham Member QRZ Page

    Yes I agree, that is not a very good example to demonstrate the board in such a way. Be warned it happens so easily !. 73 de John G0WXU.
  8. AH7I

    AH7I Ham Member QRZ Page

  9. K4KYV

    K4KYV Subscriber QRZ Page

    Only problem, it looks like it's for un-balanced coax line only. Useless for balanced feeders or balanced antenn.
  10. W1VT

    W1VT Ham Member QRZ Page
    Yes, this company likes to use resistive bridges for impedance measurement, which can provide good accuracy when measuring low SWRs.
    But, balanced feeders are typically run with high SWRs, so another technique would be advisable. One idea may be to use multiple power sensors at known locations feeding back data using some form of wireless communication. It is hardly new, but it may now be practical with advances in cheap wireless technology.
    W1YW likes this.

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