1. You can now help support WorldwideDX when you shop on Amazon at no additional cost to you! Simply follow this Shop on Amazon link first and a portion of any purchase is sent to WorldwideDX to help with site costs.
    Dismiss Notice

7' Skipshooter (Pictures and measurements)

Discussion in 'CB Antennas' started by 2NC995, Mar 18, 2020.

  1. 2NC995

    2NC995 DAN

    Joined:
    Feb 23, 2008
    Messages:
    1,498
    Likes Received:
    2,640
    Below are some measurements and photos I took for Marconi. He is working on a model for this antenna.

    Figured I would share with all:

    Skiphooter7.jpg

    BASE:



    D83CE731-91C8-4162-8F68-7852296ABB2D.jpeg

    MID SECTION:

    D35D4074-2011-471B-A8C1-1A9C4863B1E0.jpeg

    UPPER SECTION:

    1E2978E0-CD40-4FED-9619-A8C75A328736.jpeg

    TIP:

    196FC78F-678B-4480-A6C8-1657F6F8C2B5.jpeg
     

  2. Slowmover

    Slowmover Sr. Member

    Joined:
    Feb 17, 2015
    Messages:
    1,698
    Likes Received:
    2,432
    Nicely done.
     
  3. Marconi

    Marconi Usually if I can hear em' I can talk to em'.

    Joined:
    Oct 23, 2005
    Messages:
    6,287
    Likes Received:
    1,278
    Very good work Dan, thanks!
     
  4. Alan Blackmon

    Alan Blackmon Well-Known Member

    Joined:
    Apr 11, 2017
    Messages:
    159
    Likes Received:
    201
    Very clean work.
     
  5. walterjn

    walterjn Well-Known Member

    Joined:
    Mar 15, 2019
    Messages:
    143
    Likes Received:
    199
    Hmmm, might have to try my hand...
     
  6. Marconi

    Marconi Usually if I can hear em' I can talk to em'.

    Joined:
    Oct 23, 2005
    Messages:
    6,287
    Likes Received:
    1,278
    2NC995, in your images #2 & #3 above, can you give me the space dimension for the top coil area that is 12" inches long and the same for the coil that is 68" inch long?

    If you can measure the space dimension between coils as close to center to center for the wire as you can. Modeling measures spacing between parallel wires from center to center, not edge to edge.

    Your post #1 above shows 0.0415" inches for the wire diameter, so could you check this again for me? The wire diameter itself is...measured from edge to edge.


    I don't mean to be so picky, but the link below clearly shows the wire for the 7' Sharpshooter is #17 gauge wire. Sharpshooter, among other CB companies, is a division of Charles Electronics. (http://macoantennas.net/).

    Also see the link below for the Sharpshooter site.
    http://skipshooterantennas.com/Antennas/S7.html
     
    #6 Marconi, Mar 23, 2020
    Last edited: Mar 23, 2020
    Slowmover and walterjn like this.
  7. 2NC995

    2NC995 DAN

    Joined:
    Feb 23, 2008
    Messages:
    1,498
    Likes Received:
    2,640
    No worries...be as picky as needed!

    I’m still at the beach DXing, or trying anyway, will update in the AM.

    Thanks for looking so hard at this.
     
    walterjn and Marconi like this.
  8. Marconi

    Marconi Usually if I can hear em' I can talk to em'.

    Joined:
    Oct 23, 2005
    Messages:
    6,287
    Likes Received:
    1,278
    Here is the model that is close to the dimensions as I understand them. The model is a little less than 2" inches to long, but the match shows the antenna is short, R = 42.44, X = -20.44 ohms = 1.598 SWR.

    This suggests the antenna a couple of inches to long, but the match shows the antenna is short. I have one more adjustment I want to change at the bottom where the solider wire section and the 3 coils are located.

    I also want to try making the 4 radials a bit longer and see how that effects the match and the overall total length of the radiator. I took the 4 wire ground plane off of a 1/4 wave whip model that worked and matched well. The model is already near my maximum segment limit...so I can't play with the ground plane much. This model has over 300 wires with all the coils it has.
     

    Attached Files:

    2NC995 and Redbeard U812 like this.
  9. 2NC995

    2NC995 DAN

    Joined:
    Feb 23, 2008
    Messages:
    1,498
    Likes Received:
    2,640
    Ok, Marconi:

    For the wire diameter: ~0.041" is what I am measuring. Definitely not 0.450+" one would expect to see with 17 gauge. I would imagine this is actually 18 gauge with the small increase in diameter coming from the enamel.

    For the top section: ~0.185" turn to turn, measured CENTER TO CENTER.

    And for the bottom section measured the same way: ~1.595”
     
    #9 2NC995, Mar 24, 2020
    Last edited: Mar 25, 2020
  10. 2NC995

    2NC995 DAN

    Joined:
    Feb 23, 2008
    Messages:
    1,498
    Likes Received:
    2,640
    Sorry, an error in the last paragraph. For some reason I wrote 0.1595”, which makes no sense.

    Corrected.
     
  11. Marconi

    Marconi Usually if I can hear em' I can talk to em'.

    Joined:
    Oct 23, 2005
    Messages:
    6,287
    Likes Received:
    1,278
    Thanks Dan. my current space between coils for the bottom is 1.563".

    BTW I allowed for 0.053" as the thickness for the wire coating.

    My top wire spacing is set at 0.201" and I will reduce the thickness for the wire coating and maybe that will allow me to get the coils closer together. This may be the difference and give me a better match without getting and error for wires that are to short or too close together.

    Thanks for your patience and your help.
     
    2NC995 likes this.
  12. hotrod

    hotrod Well-Known Member

    Joined:
    Feb 16, 2007
    Messages:
    2,422
    Likes Received:
    256
    thank,s guys for the work in this.. ive used topload antennas in the past,, they seem to work well.. not much on power handling or bandwith. i may have to give this one a try
     
    2NC995 likes this.
  13. 2NC995

    2NC995 DAN

    Joined:
    Feb 23, 2008
    Messages:
    1,498
    Likes Received:
    2,640
    I'm running a DX500 into it with no ill effects to date. Only SSB, however, which is probably a little easier on it.
     
    hotrod likes this.
  14. hotrod

    hotrod Well-Known Member

    Joined:
    Feb 16, 2007
    Messages:
    2,422
    Likes Received:
    256
    so question to all that use the skipshooter anyone ever put a spring under it.. i ask cause with everything on these days you gotta use drive thrus.. ...so i thought with the spring it would give and bend back outta way till i cleared.
     
  15. walterjn

    walterjn Well-Known Member

    Joined:
    Mar 15, 2019
    Messages:
    143
    Likes Received:
    199
    According the their site, they claim that the 7' skip shooter is supposed to be able to handle 5k.
    http://skipshooterantennas.com/Antennas/S7.html
    The S7 SkipShooter® antenna is 84” long and has a proven high-performance design
    that will withstand 5000 watts.
     
    2NC995 likes this.

Share This Page

  • About Us

    The WorldwideDX Radio Forum was originally established in 2001. We pride ourselves on welcoming Radio Hobby enthusiasts of all types, while offering unbiased, informative, and friendly discussion among the members. We are working every day to make sure our community is the best Radio Hobbyist's site.
  • Like us on Facebook

  • Premium VIP Member

    The management works very hard to make sure the community is running the best software, best designs, and all the other bells and whistles. Care to buy us a beer? We'd really appreciate it!

    Donate to us!