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Dipoles

I recently made a 75 meter dipole. Here is how it is constructed. I used plexiglass to make the feed point, 6x6, 1/4" thick. Drilled 2 holes, one on each corner to attach the wire to and two more holes in the center for the coax to go through. Why 2 holes? If you snake the coax through one then the other you have strain relief. I then used a 14 guage stranded antenna wire I ordered from a company in Utah (I can't remember the name). I soldered every connection and coated everthing with hot glue to seal out the elements. I tuned the antenna to 3.870 for centerpoint. It is 1.5 or better for 3.820 to 3.920,that is 100 KHz. If I want to use it a little higher up the band the MFJ 969 helps me there.

I also built a rotatable dipole for 17 meters.

Works great also

fasteddy


</p>
 
Rangerman,

I use solid #12 copper house wire. I have been told it doesn't matter if insulated as far as performance as the rf isn't affected by the plastic coating, but would be good for weather wear. I know some have used the braided wire. I was also told a good silicone spray works good on the connection.


sonwatchersig.gif


CDX_3.gif




God bless you all !



CDX-897

OT-897

WV-897

CM-2368

American Kangaroo-1897</p>Edited by: <A HREF=http://p067.ezboard.com/bworldwidecbradioclub.showUserPublicProfile?gid=sonwatcher@worldwidecbradioclub>Sonwatcher</A> 
pennsylvania_fl_md_clr_28006.gif
at: 7/7/04 7:04 pm
 
Rangerman,

I use solid #12 copper house wire. I have been told it doesn't matter if insulated as far as performance as the rf isn't affected by the plastic coating, but would be good for weather wear. I know some have used the braided wire. I was also told a good silicone spray works good on the connection.


sonwatchersig.gif


CDX_3.gif




God bless you all !



CDX-897

OT-897

WV-897

CM-2368

American Kangaroo-1897</p>Edited by: <A HREF=http://p067.ezboard.com/bworldwidecbradioclub.showUserPublicProfile?gid=sonwatcher@worldwidecbradioclub>Sonwatcher</A> 
pennsylvania_fl_md_clr_28006.gif
at: 7/7/04 7:04 pm
 
Hee hee,

Jonbah,

At least it's better than the time you got bored and pulled out your shotgun and shot your Browning<img src=http://www.ezboard.com/intl/aenglish/images/emoticons/roll.gif ALT=":rollin">


sonwatchersig.gif


CDX_3.gif




God bless you all !



CDX-897

OT-897

WV-897

CM-2368

American Kangaroo-1897</p>
 
Hee hee,

Jonbah,

At least it's better than the time you got bored and pulled out your shotgun and shot your Browning<img src=http://www.ezboard.com/intl/aenglish/images/emoticons/roll.gif ALT=":rollin">


sonwatchersig.gif


CDX_3.gif




God bless you all !



CDX-897

OT-897

WV-897

CM-2368

American Kangaroo-1897</p>
 
<img src=http://www.ezboard.com/intl/aenglish/images/emoticons/laugh.gif ALT=":lol"> <img src=http://www.ezboard.com/intl/aenglish/images/emoticons/roll.gif ALT=":rollin"> <img src=http://www.ezboard.com/intl/aenglish/images/emoticons/roll.gif ALT=":rollin">


sonwatchersig.gif


CDX_3.gif




God bless you all !



CDX-897

OT-897

WV-897

CM-2368

American Kangaroo-1897</p>
 
<img src=http://www.ezboard.com/intl/aenglish/images/emoticons/laugh.gif ALT=":lol"> <img src=http://www.ezboard.com/intl/aenglish/images/emoticons/roll.gif ALT=":rollin"> <img src=http://www.ezboard.com/intl/aenglish/images/emoticons/roll.gif ALT=":rollin">


sonwatchersig.gif


CDX_3.gif




God bless you all !



CDX-897

OT-897

WV-897

CM-2368

American Kangaroo-1897</p>
 
And to think people thought I was NUTS when I tossed a Magnum 257 out the window while driving down the hiway. Just goes to show there is always a better mod for some radios. Jonbah, Maybe you could film the trap shoot and put it on a web site listed as the ultimate mod for a 3900 <img src=http://www.ezboard.com/intl/aenglish/images/emoticons/laugh.gif ALT=":lol">


<hr />73, Mike
photo.thumb.jpeg
</p>Edited by: <A HREF=http://p067.ezboard.com/bworldwidecbradioclub.showUserPublicProfile?gid=kd5vhf>KD5VHF</A> at: 8/23/04 9:15 pm
 
And to think people thought I was NUTS when I tossed a Magnum 257 out the window while driving down the hiway. Just goes to show there is always a better mod for some radios. Jonbah, Maybe you could film the trap shoot and put it on a web site listed as the ultimate mod for a 3900 <img src=http://www.ezboard.com/intl/aenglish/images/emoticons/laugh.gif ALT=":lol">


<hr />73, Mike
photo.thumb.jpeg
</p>Edited by: <A HREF=http://p067.ezboard.com/bworldwidecbradioclub.showUserPublicProfile?gid=kd5vhf>KD5VHF</A> at: 8/23/04 9:15 pm
 
<blockquote>Quote:<hr>would be handy if u have a dualband radio for say, 2 mtr/ 70cm. u then only have one antenne so 1 coax.<hr></blockquote>Quite a few folks around here made a dual band J-pole like this one with good results. www.n7qvc.com/amateur_radio/copper.html


<hr />73, Mike
photo.thumb.jpeg
</p>Edited by: <A HREF=http://p067.ezboard.com/bworldwidecbradioclub.showUserPublicProfile?gid=kd5vhf>KD5VHF</A> at: 10/9/04 8:17 pm
 
<blockquote>Quote:<hr>would be handy if u have a dualband radio for say, 2 mtr/ 70cm. u then only have one antenne so 1 coax.<hr></blockquote>Quite a few folks around here made a dual band J-pole like this one with good results. www.n7qvc.com/amateur_radio/copper.html


<hr />73, Mike
photo.thumb.jpeg
</p>Edited by: <A HREF=http://p067.ezboard.com/bworldwidecbradioclub.showUserPublicProfile?gid=kd5vhf>KD5VHF</A> at: 10/9/04 8:17 pm
 

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