What is an acceptable loss for you for your coax on the HF frequencies?

Discussion in 'Ham Radio Discussions' started by KN4DQE, Nov 6, 2018.

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  1. WZ7U

    WZ7U Subscriber QRZ Page

    I want to go with the homemade ladderline on the loop, but I haven't decided on what to use for the spacers yet.
     
  2. KN4DQE

    KN4DQE Ham Member QRZ Page

    Can anyone point me to a place that illustrates how to make such a ladder line?
     
  3. WZ7U

    WZ7U Subscriber QRZ Page

    https://duckduckgo.com/?q=making+ladder+line&t=h_&atb=v54-2&iar=images&iax=images&ia=images
    http://www.dj0ip.de/open-wire-fed-ant/d-i-y-ladder-line/

    Not meaning to sound offensive, not at all. Having said that, you seem like a nice guy. Why the hell can't you look up the question on a search engine like I just did and start reading? I mean, geez; do I have to wipe your chin after every bite too?

    Sorry, I just get sick of what seems like guys not trying to find the answer first themselves. No personal attack meant or intended, just a generic question to the masses. I hope that this was at least helpful, since I am also wanting to know this stuff too. And here I was going to varnish some popsickle sticks - I'm hopeless...

    there, I just reported myself....
     
    KY5U likes this.
  4. WZ7U

    WZ7U Subscriber QRZ Page

    OK, now that I made myself feel like an ass and the mods laughed at me for self reporting my rectumness, I have to try to atone for my sin as it were. What sin, you ask? The sin of Crass. Being an ass. Whatever...

    I found this one, nice calculation chart for impedance but I'm not sure how UV resistant his material is - http://www.delboyonline.co.uk/m0dad/homebrew_ladder_line.htm

    More examples of pages displayed in the search engine results -

    http://kv5r.com/ham-radio/ladder-line/
    https://www.eham.net/ehamforum/smf/index.php?topic=60987.0

    http://www.w1aex.com/owl/owl.html

    https://forums.qrz.com/index.php?threads/homebrew-ladder-line-what-do-you-use-for-spreaders.286609/

    See how easy that was? These are a great place to start and was only a small fraction of the listings that came up. So there you go. Question from post #22 answered. Enjoy!
     
  5. KN4DQE

    KN4DQE Ham Member QRZ Page

    Gee... Thanks for putting me in my place for asking for someone to share their knowledge or resources with me. It's no surprise that there are a lot of folks out there that don't even bother to come here due to the "warm" reception that some folks provide...
     
  6. KC8VWM

    KC8VWM Moderator Volunteer Moderator QRZ Page

    Forget about making ladder line spacers from varnish and popsicle sticks.

    Just cut up some 1/2" wide UV resistant zip ties and drill holes in both ends for the wire to pass through and there's your ladder line spacers...

    IMAG0665.jpg

    Cheap as dirt to make and just a single 18" long zip tie can make a dozen of them.

    Get a 20 pack of 1/2" zip ties for the cost of a ham sandwich and make hundreds!

    I also use these for making lightweight, but yet very strong portable antenna insulators. So if you have a pair of scissors and a drill bit, you can make these too. :)

    IMAG0663.jpg
     
    Last edited: Nov 9, 2018
    N0TZU, K7TRF and KA9JLM like this.
  7. WA9SVD

    WA9SVD Ham Member QRZ Page

    Being serious, almost any weather-proof (actually, most are weather resistant) INSULATORS can be used. Certainly, ceramic would be the most desirable, but heavy and expensive. UV resistant plastic insulators would be acceptable; and for a semi-permanent installation, even PVC pipe can be used. Whatever you choose, be SURE the "black cable ties" you use ARE actually UV resistant; otherwise, they, like their clear plastic brethren will disintegrate within 6 months (+/-), as my dad found out in his garden. Sun/weather exposure can be, and is, fatal in a few months if the cable ties are not UV resistant.
     
    N0IOP likes this.
  8. K7TRF

    K7TRF Premium Subscriber QRZ Page

  9. NL7W

    NL7W Premium Subscriber QRZ Page

    Acceptable? 1 to 1.5 dB max on HF. Which means I would install hardline for long runs over 100 to 150 feet, even on HF.
     
  10. NL7W

    NL7W Premium Subscriber QRZ Page

    W1TRY likes this.

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