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.

Mobile Diesel 4000 Watt "Big Coil" Too good to be true?

Discussion in 'CB Antennas' started by LeapFrog, May 7, 2017.

  1. LeapFrog

    LeapFrog
    Expand Collapse
    Rare Vocoder Pepe

    Joined:
    Feb 15, 2016
    Messages:
    983
    Likes Received:
    240
    Hello everyone, I was asked what would be a better antenna compared to the Diesel 4000 Watt antenna purchased off ebay for cheap. (Like This One)
    [​IMG]
    I don't know if the "Diesel Antenna" comes with coax/mounting hardware or just the main antenna "rod w/ coil".
    But I had a chance to look at a diesel "4000 watt" mobile antenna w/ "the big coil" and I think the coax he had hooked up looked too thin and economical (cheap) to handle even a 2000 watts FM ( or 2 K.W. Dead Key) signal, but the antenna looked like it could?

    What do you think, are these Diesel antenna too good to be true, and would a 108 in. whip out perform this
    "big coil"?

    Thank You, Best Regards
    -LeapFrog


     
    #1 LeapFrog, May 7, 2017
    Last edited: May 8, 2017

  2. Robb

    Robb
    Expand Collapse
    Yup

    Joined:
    Dec 18, 2008
    Messages:
    9,993
    Likes Received:
    1,905
    IIRC the 102"has a usable bandwidth of almost +/-1.5mhz from center freq and the big coil ('bc') has about a third of that. The BC has low loss from its coil and a 102 doesn't have that loss problem. They both require a 3/8x24 thread base.
     
    #2 Robb, May 7, 2017
    Last edited: May 7, 2017
    LeapFrog and Mudduckmobile like this.
  3. 543_Dallas

    543_Dallas
    Expand Collapse
    Sr. Member

    Joined:
    Jul 25, 2011
    Messages:
    931
    Likes Received:
    893
    You have a 66" coiled antenna vs a 108" antenna. If that's what you need $20 isn't a bad deal but the construction quality is probably not as good as a predator 10k or other premium brand.
     
    rabbiporkchop and LeapFrog like this.
  4. Road Squawker

    Road Squawker
    Expand Collapse
    Well-Known Member

    Joined:
    Jan 19, 2011
    Messages:
    1,138
    Likes Received:
    488
    Dayum!!!! and it is "air cooled" too
     
    codeman and LeapFrog like this.
  5. Captain Kilowatt

    Captain Kilowatt
    Expand Collapse
    Professional Amateur
    Staff Member

    Joined:
    Apr 6, 2005
    Messages:
    13,842
    Likes Received:
    5,096
    YUP with variable speed blower. The faster you drive the higher the rate of cooling. :LOL:
     
    The DB, Tallman and LeapFrog like this.
  6. fourstringburn

    fourstringburn
    Expand Collapse
    W9WDX Amateur Radio Club Member K5KNM

    Joined:
    Feb 11, 2007
    Messages:
    1,110
    Likes Received:
    577
    Isn't those super dooper oil cooled antennas better?
     
    rabbiporkchop and LeapFrog like this.
  7. LeapFrog

    LeapFrog
    Expand Collapse
    Rare Vocoder Pepe

    Joined:
    Feb 15, 2016
    Messages:
    983
    Likes Received:
    240
    Thanks y'all I appreciate it, I figure a longer vertical element and less to go wrong makes the whip a clear winner if height issues are no concern!
     
  8. RatsoW8

    RatsoW8
    Expand Collapse
    Supporting Member, W9WDX ARC Member - WD8T

    Joined:
    Nov 3, 2009
    Messages:
    3,049
    Likes Received:
    1,289
    And it will handle 4KW which is I believe the full legal limit on 11 meters now, or is it 4 watts? :confused:
     
    BBB, Road Squawker and LeapFrog like this.
  9. fourstringburn

    fourstringburn
    Expand Collapse
    W9WDX Amateur Radio Club Member K5KNM

    Joined:
    Feb 11, 2007
    Messages:
    1,110
    Likes Received:
    577
    Mobile antennas, the longer the better which should have less inductance coil losses.
     
    LeapFrog likes this.
  10. Road Squawker

    Road Squawker
    Expand Collapse
    Well-Known Member

    Joined:
    Jan 19, 2011
    Messages:
    1,138
    Likes Received:
    488
    Exactly correct, The input impedance of any short antenna will exhibit capacitive reactance (-j).

    In order to cancel out this negative reactance, a loading coil with equal, but opposite reactance (+j) is used.

    The shorter the antenna (in terms of wavelength), the larger the coil's reactance must be, along with a corresponding increase in coil losses.

    That being said,......... that chrome finish sure is shiney
     
    LeapFrog likes this.
  11. PA629

    PA629
    Expand Collapse
    Active Member

    Joined:
    Jan 22, 2007
    Messages:
    182
    Likes Received:
    57
    It's been my experience that coils with a gold finish produce more AUDIOOOOO....:rolleyes:
     
    Tallman and Road Squawker like this.
  12. LeapFrog

    LeapFrog
    Expand Collapse
    Rare Vocoder Pepe

    Joined:
    Feb 15, 2016
    Messages:
    983
    Likes Received:
    240
    Thanks, Yes that's what I figured would happen.. The "real deal" vertical whip would outperform the coil design on the Diesel, thank you for articulating so well.
    -Leap
     
  13. BBB

    BBB
    Expand Collapse
    Well-Known Member

    Joined:
    Jan 17, 2012
    Messages:
    687
    Likes Received:
    329
    Stryker would have you believe it's 10KW :p

    Stryker SR-A10 CB Antenna Important Features Includes:
    • 6 Gauge Solid Copper 100% Silver Plate Wire
    • 10,000 Watts Power Handling Capability
    • Extremely Efficient High “Q” Coil
    • Double Wall Coil Cover made from High Impact Mobay Plastic
    • Can be Tune for 26 – 30 Mhz
    • 10” Stainless Steel Shaft
    • 49” Stainless Steel Whip
    • Reduced Static Interference
    • RF Gain wide open or back off slightly
    • Standard 3/8” x 24” Thread on Shaft
    • 2 Year Warranty
    (I'm sure its probably a very nice antenna)
     
    543_Dallas and LeapFrog like this.
  14. Sarasota Slim

    Sarasota Slim
    Expand Collapse
    Active Member

    Joined:
    Nov 18, 2016
    Messages:
    176
    Likes Received:
    81
    "Diesel" products have always struck me as cheap. I have noticed, too, that I have run across items that were identical to each other, except 1 was labeled "Diesel", and the other, "Barjan".

    The company has zero web presence, that I could find, aside from Diesel products for sale on various websites.

    I did find, however, that "Diesel Electronics" is owned by DAS Companies, as I had suspected. They trademarked the name, then abandoned it a year later, apparently.

    http://www.trademarkia.com/diesel-electronics-85717289.html

    DAS is a company, whose primary purpose is to stock travel centers. They bought a bunch of reputable names, but I highly doubt that things are of the same quality.

    http://www.dasinc.com/

    My theory is that bean counters likely run the show, and that they are more concerned with expenditures, profits, and losses, than they are with quality of product. Likely, too, is that the Cheif Executive Bean Counter knows nothing about radio communication, and doesn't care. It just makes me less likely to trust DAS. I actually do have some DAS products that I use, but I am slowly replacing them with other brands.

    So there's a little company background, coupled with a little strong opinion, and original question unanswered by me, lmao. (At least I stayed on topic:ROFLMAO: )
     
    codeman and LeapFrog like this.
  15. rabbiporkchop

    rabbiporkchop
    Expand Collapse
    Well-Known Member

    Joined:
    Jan 18, 2007
    Messages:
    699
    Likes Received:
    143
    definitely more durable.
     

Share This Page