Page 2 of 3 FirstFirst 123 LastLast
Results 11 to 20 of 21

Thread: Mounting a HF antenna

  1. #11
    Membership #: 10 Full Member mu0chn's Avatar
    Name
    Jes
    Join Date
    9th Apr 2015
    Location
    Guernsey EU-114
    Posts
    146
    Thanks
    20
    Thanked 25 Times in 25 Posts

    Re: Mounting a HF antenna

    Quote Originally Posted by M0LMK View Post

    Here's a picture of the roof rack I'll be fitting. The only difference is that mine will have a rubber covered aluminium floor covering the entire rack floor. I think I'll also bond it to the car with a few 1" copper straps.

    Attachment 695
    I think that if the aluminium floor has good contacts where it is bolted to the roof rack you will have a good start. Years ago my Dad had 5 Dexion shelves bolted together and a Mobile whip mounted in the middle.

    Have you looked at this site loads of good stuff.
    À la perchoine

    Jes

    G-QRP 10080 - RSGB - ARRL

  2. The Following User Says Thank You to mu0chn For This Useful Post:

    M0LMK (4th Feb 2016)

  3. #12
    Membership #: 46 Full Member WD5IKX's Avatar
    Name
    John Love
    Join Date
    22nd Apr 2015
    Location
    Whitesboro, Texas USA
    Posts
    227
    Thanks
    25
    Thanked 49 Times in 44 Posts

    Re: Mounting a HF antenna

    I just got my "Bug Eliminator" antenna mounted on my new truck. The tip is 13' 8" above the ground so mounting in the middle of the roof is not an option. (o: Where it is mounted on the back of the truck I can still get into my car park. I am now working on running the coax, mounting the shunt coil and improving the ground bonding to the body. When I had this antenna on my old vehicle it was great giving me contacts all over the globe. I am looking forward to being mobile again.

    Click image for larger version. 

Name:	Bug Eliminator on Ram 1500-2-sm.JPG 
Views:	295 
Size:	399.0 KB 
ID:	698

    John
    WD5IKX
    Texas

  4. The Following User Says Thank You to WD5IKX For This Useful Post:

    M0LMK (4th Feb 2016)

  5. #13
    Membership #: 2 Full Member Article Contributor
    Award Moderator
    M0LMK's Avatar
    Name
    Matt
    Join Date
    18th Mar 2015
    Location
    Kent - JO01ri
    Posts
    609
    Thanks
    292
    Thanked 78 Times in 53 Posts

    Re: Mounting a HF antenna

    That looks great John. Is it homebrew? Looks like it could be an MFJ coil in the middle.
    Matt - M0LMK


  6. #14
    Membership #: 46 Full Member WD5IKX's Avatar
    Name
    John Love
    Join Date
    22nd Apr 2015
    Location
    Whitesboro, Texas USA
    Posts
    227
    Thanks
    25
    Thanked 49 Times in 44 Posts

    Re: Mounting a HF antenna

    Hi Matt

    Yes it is home brew. I made one earlier with the MFJ 67 coil and it works great on 30, 20, 17, 15, 12, and 10 meters. I called it the "Bug Whacker".
    I bought the coil parts for the "Bug Eliminator" from another ham and the Mast is from Hustler and the 72" whip is from MFJ.
    The new truck required a ball mount which I got from Beedlove. https://breedlovemounts.com/
    The Bug Eliminator operates on 40, 30, 20, 17, and 15 meters with the 72" whip. If I want 12 and 10 meters I usually swap to the "Bug Whacker" coil.

    Click image for larger version. 

Name:	Bug Eliminator-1-sm-label.jpg 
Views:	894 
Size:	216.0 KB 
ID:	699Click image for larger version. 

Name:	5 Band Bug Whacker-4.jpg 
Views:	518 
Size:	175.7 KB 
ID:	700Bug Whacker

    John WD5IKX
    Texas

  7. #15
    Membership #: 10 Full Member mu0chn's Avatar
    Name
    Jes
    Join Date
    9th Apr 2015
    Location
    Guernsey EU-114
    Posts
    146
    Thanks
    20
    Thanked 25 Times in 25 Posts

    Re: Mounting a HF antenna

    Quote Originally Posted by M0LMK View Post
    I've seen several images of large HF whips mounted on cars. Some are at roof level, some are mounted on the tow bar and others are mounted 1/2 way between. Am I correct in thinking that a roof mount is the most efficient performance wise?
    How you getting on with your mobile mount Matt.
    À la perchoine

    Jes

    G-QRP 10080 - RSGB - ARRL

  8. #16
    Membership #: 2 Full Member Article Contributor
    Award Moderator
    M0LMK's Avatar
    Name
    Matt
    Join Date
    18th Mar 2015
    Location
    Kent - JO01ri
    Posts
    609
    Thanks
    292
    Thanked 78 Times in 53 Posts

    Re: Mounting a HF antenna

    It's moving along. I've been out and purchased some new SS bolts and washers to hold the rack onto the roof brackets a small section of steel plate. The plan is to make 4 brackets that should sandwhich between the roofrack and the mounting legs. I'll get some pictures up when the brackets are done.
    Matt - M0LMK


  9. #17
    Membership #: 46 Full Member WD5IKX's Avatar
    Name
    John Love
    Join Date
    22nd Apr 2015
    Location
    Whitesboro, Texas USA
    Posts
    227
    Thanks
    25
    Thanked 49 Times in 44 Posts

    Re: Mounting a HF antenna

    I am making some progress. I made a shunt coil and attached it today to improve loading on 40 meters. I did some tuning and it looks like it is doing the job. I need to do more bonding before I finish tuning. I am waiting on some wiring parts so I can finish running the DC from the battery. Hope it all comes together soon....I miss being mobile.

    Click image for larger version. 

Name:	BE Shunt coil-1.JPG 
Views:	188 
Size:	416.5 KB 
ID:	732

    John WD5IKX

  10. The Following User Says Thank You to WD5IKX For This Useful Post:

    M0LMK (28th Feb 2016)

  11. #18
    Membership #: 46 Full Member WD5IKX's Avatar
    Name
    John Love
    Join Date
    22nd Apr 2015
    Location
    Whitesboro, Texas USA
    Posts
    227
    Thanks
    25
    Thanked 49 Times in 44 Posts

    Re: Mounting a HF antenna

    I hooked up my FT-450 with a battery in the truck to test the antenna.....Well it seems to be working since I got 59 reports from HG2DX in Hungary and HK1NA in Columbia on 20 meters and M0HDX Jim in England on 17 meters and this was running only 50 watts. Now I have to get all the power wiring done and finish bonding which I hope will cure the ignition noise I am getting. I am anxious to get this project done.

    John WD5IKX
    Texas, USA
    Last edited by WD5IKX; 5th Mar 2016 at 05:10.

  12. #19
    Membership #: 10 Full Member mu0chn's Avatar
    Name
    Jes
    Join Date
    9th Apr 2015
    Location
    Guernsey EU-114
    Posts
    146
    Thanks
    20
    Thanked 25 Times in 25 Posts

    Re: Mounting a HF antenna

    How's it going Matt, are you mobile yet.
    My Volvo est broke down so I bought a Hijet van but there is not much room for anything in that.
    Looking at a Nissan Cargo now, more room for work gear and 2nd battery
    À la perchoine

    Jes

    G-QRP 10080 - RSGB - ARRL

  13. #20
    Membership #: 2 Full Member Article Contributor
    Award Moderator
    M0LMK's Avatar
    Name
    Matt
    Join Date
    18th Mar 2015
    Location
    Kent - JO01ri
    Posts
    609
    Thanks
    292
    Thanked 78 Times in 53 Posts

    Re: Mounting a HF antenna

    Allmost...

    I've got the second battery in and the 857 in place. Just need to run the power to it and cable in split charge system in which should be some time next week. I've also got an ATAS 120 for HF (not very efficient but convenient for on the move) and a spare wheel bracket which should be delivered tomorrow.

    Will post pictures as soon as it's done.
    Matt - M0LMK


Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •