Fastest No Tune 80 10 EFHW NVIS Antenna? Chalk Line based Ham Radio Antenna. 

I loved the practical deployment, and the antenna is sure to perform. I may just adopt an NVIS strategy afield... but for now, I just started to play with a new Gabil 7350... My antenna collection grows... and your video here may prompt an addition. Thanks.

Dude, this is GREAT!!! I love 40m because of the NVIS... my setup is a pain in the butt. I will switch to this.

Just love the idea of the chalkline

Yep i use the same copper line and Irwin speed reels (might change to your reels) for my setup. Nice, compact and easy to adjust. Instead of knots i added small heat shrink tubes to mark my bands. Instead of hanging my reel by the copper line, I tied a kevlar kite line into a loop and fed it into the case opposite to the line side. Keeps it insulated and has 500lb test strength.

really cool little setup !! awhile back i built a couple metal irwin chalk lines for tree climbing, replacing the chalk line with throw line. one thing that i did was add a para cord loop to the back of the box. i just drilled a hole, took the box apart then put a loop around where the screw goes and put back together.

Nice video, love these kind of vids. Subscribed

Fantastic video and idea for a portable NVIS multiband antenna setup. Thanks so much for sharing. I have a new project to work on now. Will go great with the FX-4CR I have on order for travel/POTA etc. Cheers and 73 de W3LAM!

Hams impress me with this kind of thing. Excellent video.

That is absolutely amazing. Best quick setup/teardown setup I have seen. Hate to say it. But I am gonna copy it and build one tomorrow. I am going to send a link to this video to my buddy so he can build one. Thank you for taking the time to make this video and showing us. New subscriber. Maurice N7NHS

Awesome idea with chaulk line. Thank you. KJ5CMW, Brenham, Texas...

Thank you, looks like an easy, field expedient and very "packable" HF for those low power signals...for when it absolutely, positively has to be there... :)

Awesome idea! I had kept some steel 100' tape measures aside to do something similar but now I have to locate that chalkline and fishing leader. Thanks!

Very cool use of a chalkline winder. I am currently waiting for a (tr)uSDX and am looking to have a similar portable HF setup. Right now I have a packtenna EFHW configured for linked 20/40, but this idea is brilliant.

Great idea and execution

Great idea, nice and easy!👍

Great idea!

Very informative.

Ingenious!

I love the ChalkLine Winder Idea with the braided copper trolling wire. I am definitely going to look into this more as I test more with Wire antennas over the Summer.

super cool video!! inspiring.

Nice, added to my list!

Great stuff! I'm going to try to make something similar.

Just love it

Great work on the velcro box. I use 15' of LMR100 but thinking of making that coax 20-25' now. I use a TennTennas 25W EFHW transformer since I use it with G90 too. QRPGuys 10W is smaller tho. You reckon ~150 ft PolyStealth 22 wire would wind on that winder? .052" OD, 70lbs breaking strength. Inspiring videos!

Thank You for the good information. I will see if I can make one of them but want it to handel full power for my IC7300. But that is only making a bigger transformer. I have make one already for my home use. 73 W4DES

You could also use a fishing reel for this- distribute the wire more evenly.

Very nice!

Thank for the video! I decided to follow along with this great idea. When I was getting parts, I had forgotten about the choke. Which one did you get? Were you particular about it for any reason? Thank you!

I like how simple you made this setup,but do you know how many feet/inches your knots are from the end? Are you willing to share that information with us? Also is it a 49:1 ? Thanks for this video, 🙏👍👍👍👍

Thanks for sharing. Sig

Good vid. Tnx!

Bought the QRP Guys 80-10 kit and with the spade lugs, it was too tight of a fit at the connection where the BNC Connector and the spade lug were all tied together using their dimensions for hole locations so... just ordered the next sized up box from Digi-Key (Hammond 1551TBK). That will provide enough space to get everything installed, use a hot glue gun to secure the parts so they don't rattle around and should be set.

Freakin' genius.

Pretty cool stuff! I just eliminated several antennas from my go bag as a result. I bought one and just got 135' of sotabeams pvc-coated wire measured and added. I drilled a small hole in the spool to feed the wire through and knot it. Winding it up starts get a little snug as I wind the last 10' or so but it's fine. I am considering adding a banana socket to the center of the spool, opposite the handle. I often use Jackite poles and the weight of the winder would be too much on the far end, so I would merely reverse it. Not sure if the coil of unused wire will impact resonance and performance if it's on the feedpoint end of the spool though. Winding it up after deployment would work best with some tension, so I will secure the far end to something and walk as I wind.

Nice

Brilliant.

This is such a cool design! I definitely want to build one soon. Just curious, could you theoretically install the transformer into the chalk line holder? Or does it have to be on the "loose" end? Thanks! 73 KB3TVP

Excellent

Great idea! Can you give more info on the transformer? You said it was a kit from QRP but was not able to locate on their website. Thanks again for sharing!

hmm.. i heard NVIS only works on the lower bands so is this one which probably have quite a high takeoff angle ever useful on the higher ones?

This is cool

Nice👍🇬🇧

Do you think it fit a 150ft 45lb copper line or just the 30lb version?

When you calibrate your nanovna do put the calibration pieces at the end of your feed line? Also have you tested 45# copper leader with this chalk line? Thanks for sharing!

What adjustments would you do for 100W? This looks awesome. Would it be possible to do this for 100W? Would the wire/line get too bulky for the winder? Great stuff.

Hi What size is the unun and will be effected by the hight above ground

Is what you use a 49 to 1 or a 64 to 1 ? Which is better for 10 to 80 ?

Absolutely a very well thought out and efficient antenna. Would you happen to have a material sheet listed online somewhere?

Where did you find the plastic clips?

Maybe a stupid question - does the unused copper wire still rolled up in the reel not change the antenna length?

Looks great can you add links to the chalk line you used 🙏

I use something very similar with a locking scuba finger reel. Is there any penalty(that a dedicated antenna analyzer would show) when having the extra line wound up beyond the endpoint? Windcamp has a dipole with winders and tiny ferrules marking the bands. There's gotta be a reason convention calls for trimmed line, no?

Small bits and pieces are better in camo color scheme (than for example bright yellow) when fiddling with them in the forest - discuss. Now, where's my camouflage picnic table? It's around here somewhere...

Is this setup for general licensed hams and above only?

What brand is the copper fishing leader and where did you aquire it?

What brand is your chalkline reel? AJ6GE

Does the wire that is wrapped in a coil on the chalk line have any effect?

JS8Call & Winlink. Brilliant!

What's your estimate of max power and radiation pattern?

Post some links. Where can I get the chalk line?

Can I ask how far you are able to transmit to?

What brand wire do you use

You aren’t selling kits are you?

stainless steel down rigger ball cable is realluystrong and comes in different diameters

UH: Wake-up call….NVIS DOES NOT WORK above 10MHz because of something called the “critical angle”. Please look it up and you’ll quickly realize that NVIS works primarily on 80m and 40m….K7RAW-The Antenna Whisperer.

ioo😊 qaaaz 😅 😮😮

I love this kind of stuff. Totally useful in a real world emergency, self sufficient, personally customized..... And my favorite part: ZERO SAD HAM FUDD SHIT ABOUT RULES, REGULATIONS, AND KISSING GOVERNMENT BUREACRATS DICKS.

@thetechprepper