1. Welcome to Tacoma World!

    You are currently viewing as a guest! To get full-access, you need to register for a FREE account.

    As a registered member, you’ll be able to:
    • Participate in all Tacoma discussion topics
    • Communicate privately with other Tacoma owners from around the world
    • Post your own photos in our Members Gallery
    • Access all special features of the site

Simple CB Antenna Mount

Discussion in '2nd Gen. Tacomas (2005-2015)' started by HBMurphy, Jul 27, 2009.

  1. Jul 27, 2009 at 6:17 PM
    #1
    HBMurphy

    HBMurphy [OP] Ban Pending

    Joined:
    Jun 27, 2009
    Member:
    #18993
    Messages:
    6,090
    Gender:
    Male
    First Name:
    Paul
    So California Coast
    Vehicle:
    09 Off Road Delete Model
    None
    I wanted a simple antenna mount so here it is:

    Using the FireStik Fire Ring and the following parts:

    1 - 3/8" 24 TPI 2" stainless bolt ($2)
    1 - 3/8" SS washer ($0.30)
    1 - 3/8" coupling (SS if you can get one - I couldn't today) ($3.29)

    Drill out one of the holes in the bedside cleat to 3/8".

    [​IMG]
     
  2. Jul 27, 2009 at 9:11 PM
    #2
    j4x4ar3

    j4x4ar3 Well-Known Member

    Joined:
    Feb 13, 2008
    Member:
    #4725
    Messages:
    416
    Gender:
    Male
    First Name:
    Jay
    Austin, TX
    Vehicle:
    05 DC 4x4 - TRD Off Road - White
    Round Step Bars, Bed Mat, Cargo Bars w/Thules ski and bike attachments, JVC MP3 Head Unit, TRD Cat Back Exhaust, roadmaster active rear suspension, more when $$$ allows
    Cool idea makes it easily removable if you need to.

    Are you using the Firestik that doesn't require any ground plain? Model: FG3-648
     
  3. Jul 27, 2009 at 9:11 PM
    #3
    rab89

    rab89 Well-Known Member

    Joined:
    Jan 14, 2009
    Member:
    #12578
    Messages:
    5,467
    Gender:
    Male
    First Name:
    Ross
    Kelowna b.c canada
    Vehicle:
    2012 DCLB
    Grillcraft mx black upper and lower BHLM with Gloss black 265 70 17 bfg a/t center console light mini mag mounted in center console debadged bed lights 35W 5000k HID's
    i sure hope so!
     
  4. Jul 27, 2009 at 9:27 PM
    #4
    HBMurphy

    HBMurphy [OP] Ban Pending

    Joined:
    Jun 27, 2009
    Member:
    #18993
    Messages:
    6,090
    Gender:
    Male
    First Name:
    Paul
    So California Coast
    Vehicle:
    09 Off Road Delete Model
    None
    I haven't hooked it up yet. My thoughts were to use one of these

    [​IMG]

    And ground the bolt to the chassis. Am I on the right track? - I was trained as a rocket scientist - Not an RF engineer. ;)
     
  5. Jul 27, 2009 at 9:31 PM
    #5
    HBMurphy

    HBMurphy [OP] Ban Pending

    Joined:
    Jun 27, 2009
    Member:
    #18993
    Messages:
    6,090
    Gender:
    Male
    First Name:
    Paul
    So California Coast
    Vehicle:
    09 Off Road Delete Model
    None
    I was reading to use a min of 12 gauge for the ground... I was thinking bird shot?
     
  6. Jul 27, 2009 at 9:35 PM
    #6
    j4x4ar3

    j4x4ar3 Well-Known Member

    Joined:
    Feb 13, 2008
    Member:
    #4725
    Messages:
    416
    Gender:
    Male
    First Name:
    Jay
    Austin, TX
    Vehicle:
    05 DC 4x4 - TRD Off Road - White
    Round Step Bars, Bed Mat, Cargo Bars w/Thules ski and bike attachments, JVC MP3 Head Unit, TRD Cat Back Exhaust, roadmaster active rear suspension, more when $$$ allows
    Glad I asked the question. Don't even try to ground it using the method you're thinking about. The rails bolt into the bed which are composite so there's no real place to run a ground wire. If you try to run any length of cable to a groundable site then you'll screw up the tuning on the antena big time. Your best bet is to go with the Firestick II no ground plane antena and save yourself the hassle.

    I like the mount idea though and might use it myself instead of drilling holes into the bed.
     
  7. Jul 27, 2009 at 9:36 PM
    #7
    HBMurphy

    HBMurphy [OP] Ban Pending

    Joined:
    Jun 27, 2009
    Member:
    #18993
    Messages:
    6,090
    Gender:
    Male
    First Name:
    Paul
    So California Coast
    Vehicle:
    09 Off Road Delete Model
    None
    Thanks!
     
  8. Jul 27, 2009 at 9:41 PM
    #8
    HBMurphy

    HBMurphy [OP] Ban Pending

    Joined:
    Jun 27, 2009
    Member:
    #18993
    Messages:
    6,090
    Gender:
    Male
    First Name:
    Paul
    So California Coast
    Vehicle:
    09 Off Road Delete Model
    None
    So this wouldn't work?

    From FireStik
    Also, keep this in mind. If it becomes necessary to run a ground wire or braid to a chassis ground point, use a wire of at least 12 gauge. We have reviewed installations where the installer used a small gauge wire (20ga) and when the SWR was tested it fell from over 3:1 to below 1.5:1. However, the power out put was very low due to the undersized path to ground provided by the thin wire. The path to ground must be sufficient enough to carry the power being applied to the antenna.

    I have the antenna cable running along side of the frame rail so my thought was to run a ground wire from the bolt to the frame.
     
  9. Jul 27, 2009 at 9:46 PM
    #9
    HBMurphy

    HBMurphy [OP] Ban Pending

    Joined:
    Jun 27, 2009
    Member:
    #18993
    Messages:
    6,090
    Gender:
    Male
    First Name:
    Paul
    So California Coast
    Vehicle:
    09 Off Road Delete Model
    None
    Even better - just read the description of the antenna I already have - FireStik II = Sweetness! So, no need to ground?

    edit - Not so fast there Murphy! - That's not a NGP model!
     
  10. Jul 28, 2009 at 12:41 AM
    #10
    DDD

    DDD Shine bright like a hymen

    Joined:
    Mar 6, 2009
    Member:
    #14416
    Messages:
    2,254
    Gender:
    Male
    First Name:
    Derek
    Santa Clarita, CA
    Vehicle:
    06 DC 4x4 TRD Off-Road
    This really is a good idea. I had to make a bracket that would connect to the track on the bed side. This would have been much easier.
     
  11. Jul 28, 2009 at 11:12 AM
    #11
    Incognito

    Incognito μολὼν λαβέ

    Joined:
    May 25, 2009
    Member:
    #17626
    Messages:
    13,625
    Gender:
    Male
    First Name:
    Colton
    VA
    Vehicle:
    2012 Pyrite AC TRD OR
    See Build thread
    Great job!
     
  12. Jul 29, 2009 at 4:11 PM
    #12
    HBMurphy

    HBMurphy [OP] Ban Pending

    Joined:
    Jun 27, 2009
    Member:
    #18993
    Messages:
    6,090
    Gender:
    Male
    First Name:
    Paul
    So California Coast
    Vehicle:
    09 Off Road Delete Model
    None
    Okay - I'm probably glad I didn't hook it up but here's the scoop from FireStik...

    "If you ground the only bolt I see in this photo you will short the antenna and it will not work ... will cause high swr that will harm the radio. Multiple problems here. The composite bed will not supply the counterpoise requirement (ground plane ... not to be confused with chassis ground). And it is the mount, not the antenna, that requires grounding. The only "remote" chance of this set up working would be if the slide rail is metal and is chassis grounded and the mount in the channel is metal so that it is chassis grounded via the slide rail. If so, you'd still have problems because the antenna stud mount is not insulated from that bracket it is affixed to. Even then ... there may not be enough ground plane to allow a standard ground plane dependent antenna to work. Wish we had the opportunity to discuss these issues before you got this far.

    You have a ground plane dependent antenna. These require both metallic mass and a grounded mount (typically grounded via the typically metal cargo box). Worked with a gentleman last week on same truck and left him with the following options ...

    1. Roof Mount
    2. Hood Channel Mount
    3. No-Ground-Plane antenna system on box. More on No-Ground-Plane

    I suspect that if you put an SWR meter on this install that you would find it very high and un-adjustable.

    If you moved to a hood channel installation you could salvage the antenna and the coax but would need a hood channel mount (SS-17 ... mount without shown stud) and a FireRing antenna stud mount. "


    I guess simple is as simple does!
     
  13. Sep 20, 2010 at 7:58 PM
    #13
    milo39

    milo39 Well-Known Member

    Joined:
    Feb 28, 2010
    Member:
    #32281
    Messages:
    240
    Gender:
    Male
    First Name:
    myles
    downey,ca
    Vehicle:
    07 doublecab prerunner trd off road
    looks awesome
     
  14. Sep 20, 2010 at 8:01 PM
    #14
    HondaGM

    HondaGM Roll Tide

    Joined:
    Oct 28, 2009
    Member:
    #25056
    Messages:
    5,769
    Gender:
    Male
    First Name:
    James
    South-Pole
    Vehicle:
    09 DC 4x4 Blown Honda VTEC V8
    trd exhaust,step bars,vent visors,bed lights,tailgate mod
    very nice mount
     
  15. Sep 20, 2010 at 8:18 PM
    #15
    Badwin45

    Badwin45 Well-Known Member

    Joined:
    Jul 7, 2010
    Member:
    #39905
    Messages:
    240
    Gender:
    Male
    First Name:
    Chris
    OKC
    Vehicle:
    '10 DC 4x4 & '00 Pre-Runner
    Aries 4" Oval step tubes, Brute Force Fab rear bumper, Weathertech digifit floor liners.
    Were it me, I'd go with a magnet mount and place it on the roof. There are several that will work with your firestick.

    I used to run a Wilson 1000 magnet mount on mine and was always well pleased with it.
     
  16. Sep 20, 2010 at 8:49 PM
    #16
    Kyouto42

    Kyouto42 Iron Beard

    Joined:
    Aug 18, 2008
    Member:
    #8614
    Messages:
    9,243
    Gender:
    Male
    First Name:
    Jake
    Ahwatukee, AZ
    Vehicle:
    BSP '10 4x4 TRD Off-Road DC
    See build thread in signature
    Taylor helped me install mine, we mounted to the bed rail via the supplied bracket with the firestick it, got some mirror fasteners at Home Depot, drilled them out for the larger bolts, used some wing nuts... and walla a great removable setup in the bed rail. Of course, it's grounded to the body in the back. I can try and get some pics...

    SWR is great too, about 1.5 on chan near 1:1 on 40.
     
To Top