ZS6BKW Antenna Review: 1000 QSOs later...

Discussion in 'Amateur Radio News' started by K0LWC, Dec 20, 2020.

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  1. NU4R

    NU4R Ham Member QRZ Page

    10,000 in 18 months?

    I don't know about a video post but, step away from the shack and get some _________ !!!!
     
    VK6APZ, ND6M and WZ7U like this.
  2. NU4R

    NU4R Ham Member QRZ Page

    Might this be a collapsible aluminum lawn chair or...a wooden one?
     
  3. OK1XD

    OK1XD XML Subscriber QRZ Page

    Yeah, it is really great antenna. I use it quite often. In the world of multiband wire antennas nothing can beat the double Windom, but this ZS6BKW performs very well, really better than original. I put mine on 55┬┤as invV, feeding it only 100W and working the whole world if condx allow. It is a bit noisy (compared to Windom which is super quiet) but it takes less space than Windom. Great antenna for small lot owners. In case of plenty space I would go for double Windom. Anyway, I use both :)
     
  4. K0UO

    K0UO Platinum Subscriber Platinum Subscriber QRZ Page

    First, You guys need a GREAT performing antenna, in order to compare your antenna.

    The word GREAT is sure used a lot here.

    Maybe
    the receiving station is doing all the work and is the real hero, they may be the GOOD operators that has to pull these antennas out of the noise!


    As any good antenna experimenter should know, the more antennas the better, that way you can test and see how they are really working. You won't know you have a good antenna if you can't compare it with others! With a variety of antennas available and using the antenna that is generally more optimum for the particular distance, direction, and time of day is better than using an amp.
     
    Last edited: Dec 25, 2020
    WD4ELG and VK6APZ like this.
  5. WZ7U

    WZ7U Ham Member QRZ Page

    Did the back of the napkin math, works out to around 19 a day, every day, for eighteen months solid.

    Must have a commode right close to the operating position. :D
     
    VK6APZ likes this.
  6. W2AAT

    W2AAT XML Subscriber QRZ Page

    Then there is the W5GI Mystery Antenna.... OOPS! I don't want to take the thunder away from this zs6bkw lovefest......
     
    Last edited: Dec 26, 2020
    VK6APZ and K0UO like this.
  7. HB9RLZ

    HB9RLZ Premium Subscriber QRZ Page

    I always used Vertcal Antennas in the past. Until I got active on 40/80m band. A friend told me about the ZS6BKW and how limited space it needs. So I serched for infos and mesures to build one. I did it and it's the best antenna I ever had on HF (80-40-30-20-17-12-10 and 6m). For 30-17 and 12m a tuner helps to get perfect match. Finally I used a nanoVNA-F Vector Network Analizer to check the resonance.

    I do a lot FT8. My ZS6BKW it's the perfect antenna for. With no PA and 100W only I got tons of Awards for all HF-Bands (See my QRZ-Bio). The ZS6BKW is also the ideal Antenna vor RVers and portable use. All you need is 2 x 45.1115 ft of any copper or steel wire, a central plate and 40 ft of 450 Ohm ladderline. With a current Balun hocked up to your asymmetric Antenna tuner or without Balun direct to a symmetric tuner you're good to go.

    Have fun and best 73s de
    Manfred, HB9RLZ

    https://www.dxengineering.com/parts/dxe-uwa-kit
    https://www.balundesigns.com/model-1171-1-1-atu-current-balun-1-54-mhz-5kw/
    https://www.amazon.com/Seesii-Analy...ld=1&keywords=nanoVNA-F&qid=1609599070&sr=8-1
    https://ldgelectronics.com/index.php/products/desktop/at-1000proii/
     
    Last edited: Jan 2, 2021
    KM2K and KG5LTL like this.
  8. KB6HRT

    KB6HRT Ham Member QRZ Page

    Have been using the zs6bkw for 5+years, when from a 102' G5RV. For my needs its a lot better, it quieter on 75-10m an pulls in signals stronger day in an day out. On 75m use a 10 to 1 tuner an it works like a non resonant antenna on receive ( great signal to noise ratio) but down 2 S units on transmit for a resonont dipole. to me that's a good trade, can switch it with a double bazooka I use also for 75-40m an with a flip on a switch an can still hear the distance contact a little easer most of the time altho the signal meter is a tad lower on 75m but still very hearable most of the time, Have my zs6bkw at 41+' from grade an installed correctly with very low SWR 40-6 meters. Can use 5-1000+ watts, if power is required. Very good antenna for my usage..........................kb6hrt
     
    KM2K, VK6APZ and KG5LTL like this.
  9. NI9Y

    NI9Y XML Subscriber QRZ Page

    ;);););)I enjoyed your video. Next time lets hear some actual signals.

    I regularly QSO with a Creastview, FL station on 80 meters CW before sunrise who uses this antenna at 35 feet. His signal is always S-9.;)

    Check out the attachment how to construct the antenna.

    He also has a G5RV however his signal is mostly weaker on that antenna. My first antenna in 1956 was a homemade Windom using clear TV 300 ohm feedline fed thru aluminum window frame. Before that I used the bedspring at five feet.


    I use a homebrew 80 meter half-wave up 50 feet and a G5RV emergency at 33 feet and a homebrew 160 meter half-wave wire.
     

    Attached Files:

  10. VK2XTC

    VK2XTC XML Subscriber QRZ Page

    Rather than start a new post I thought I would ask my question here. Hope this is acceptable.

    I would like to understand the process for "Tuning" a ZS6BKW Multi band Dipole Antenna.

    The challenge was to build it out of common components from my local hardware store for under AU$50 or about US$30. A Fathers Day Gift Card
    I have built the antenna out of Plastic coated Washing Line, approx 60m and PVC electrical pipe for the Insulators. It's not cut at the centre, it forms the horizontal and vertical feeder sections as one length.
    I have made the ladder line out of home irrigation stand off pipe cut to 20mm lengths and cable ties.
    The 1:1 Balun is formed from 1.5mm copper wire would on an type 43 Toroid I had in the junk box.

    The key to this design is I can make the resonant length and the ladder line length longer or shorter as required to adjust the operating frequency.
    I can also adjust the antenna length to make it into the G0GSF (the ZS6BKW Jr).

    I would like to understand how to Tune the Antenna to get is to resonate correctly.
    I'm assuming the process is to start it on say 40M and adjust the horizontal section to get the lowest VSWR, and then select another band and adjust the feeder length to get it to resonate in the section of the band I'm after.
    I'm guessing, but Mathematically there should be two "magic" frequencies that can be used to align the Resonance of the antenna.

    I've googled this to death over the Covid lockdown period and everyone seems to talk to the "publication data" and the size as specified , but no one actually spells out the procedure of aligning one of these things.

    Can anyone assist ?

    Thank You

    Brian VK2XTC
     

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