CBRT has been

Skywire Loop Antenna Pics

A place to ask questions about base setup for CB radios or HAM radios. Talk about your experiences, seek advice, and share knowledge.
Post Reply
User avatar
drdx
Donor
Donor
Posts: 5,944
Joined: Apr 25 2007, 12:32
Handle: dollar-98
Real Name: David
Antenna: Many
Radio: Many-
Contact:

Skywire Loop Antenna Pics

#145100

Post by drdx »

My full wave loop skywire base hidden antenna is almost done. Here are some pics of it out in the open before it gets tucked away behind the fence. It is #12 wire, encased in gray pvc, and has a tuning mechanism that I fashioned from common hardware. The common formula for this type if antenna calls for a 37 ft loop. This one is 36 and the tuner can electronically change the loop diameter to anywhere from 36 to 38 feet by sliding the aluminum strap (shown) up or down for tuning after it is placed. I may go with more legs on it, but for now, I'm on to coax hookup and tuning. The legs shown are just what I had around. It will have a final resting height of 4 ft or so. It is all glued and very flexible, so I can move it around as needed. It will be in the yard 1st, and if this location doesn't work, I'll move it to the attic. If it does, a 2nd one will go up there, though not in pvc. Edited in: I'll have to apologize for the trash cans, I've been busy on this. :lol: -drdx


Image

Image

Image
Yes it's me, Dollar-98, drdx, the original all maul, shot cawla on workin this no-fade technology.

-drdx
User avatar
unit199
Skipshooter
Skipshooter
Posts: 235
Joined: Jan 16 2008, 18:08

#145101

Post by unit199 »

Please let us know how she works for you.
This is really interesting to me.
J.P.
User avatar
linx

#145102

Post by linx »

Nice! I've heard about this thing for a while! Good to finally see the finished product. Let us know how it works out.

One things for sure....no need to worry about wind damage!
User avatar
drdx
Donor
Donor
Posts: 5,944
Joined: Apr 25 2007, 12:32
Handle: dollar-98
Real Name: David
Antenna: Many
Radio: Many-
Contact:

#145103

Post by drdx »

Yeah, Farmboy is cooking one up too. I messed up gluing the coax box, gotta cut it out, no big deal, 5 minutes and $2.00, and I'll be good to go.

Hey, by the way for you folks out there in the high rent district, the house across the street, the one on the left, is about to be up for sale for only $200K. Yep, 3400 sq. ft, gated community, and golf a block away is CHEAP here in TX, gotta love it.

-drdx
Yes it's me, Dollar-98, drdx, the original all maul, shot cawla on workin this no-fade technology.

-drdx
User avatar
Hookie
Donor
Donor
Posts: 383
Joined: Jan 17 2008, 18:47

#145104

Post by Hookie »

be sure to let us know if it works it looks interesting
73,
Hookie
User avatar
preacherman
Donor
Donor
Posts: 1,306
Joined: Feb 09 2007, 20:13
Handle: Preacherman
Real Name: Bob
Call Sign: K0EIR
Radio: Cobra 29, Lincoln, Magnum
Contact:

#145137

Post by preacherman »

Be very interesting to see how your "cloud-warmer" works.
When the sun spots are a bit more prevelant, it should
have a good capture area. Post some results and some
formula's when you're done :)
preacherman
User avatar
PRO151

#145141

Post by PRO151 »

preacherman wrote:Be very interesting to see how your "cloud-warmer" works.
When the sun spots are a bit more prevelant, it should
have a good capture area. Post some results and some
formula's when you're done :)
preacherman
What He said double for me! :D I could do this in my attic and not have to fight with the better half about an antenna. :shock:
User avatar
209 first class
Donor
Donor
Posts: 3,920
Joined: Jul 17 2007, 10:50

#145737

Post by 209 first class »

cool, i dig the adjustable sliding tuner. reminds me of a hairpin match. i read your other post, i thought this was gonna be on a rotor,directional(like a single quadloop). looks like an omni? tell me more about the spacing between the ground and antenna. is there a prescribed dimension? looks cool. the more antennas, the better ! 2zero9
2zero9 workin this top secret station in massachusetts.
User avatar
lonewolf
Wordwide & Qualified
Wordwide & Qualified
Posts: 692
Joined: Nov 11 2006, 19:20
Contact:

#145754

Post by lonewolf »

That's kinda neat let us know how the thing works for you.
Stomping the mud ducks in northern Maine 285 standing by.

Vision without action is a daydream. Action without vision is a nightmare.
Image
User avatar
Skinny-D
4 PILL USER
4 PILL USER
Posts: 45
Joined: Jan 06 2008, 21:38

#145767

Post by Skinny-D »

I dont know about you but I would never pay 200K for a house that didnt let me do whatever I wanted at it, like put up an antennae. Isnt that the whole point of owning a house. Im not trying to rag on you im just stating my opionion!

Cool antennae! I want to know how it works. I am thinking of building my own antennae and that one looks quite cool. About how much did all the parts cost?
User avatar
Pillpopper
Donor
Donor
Posts: 256
Joined: Oct 01 2007, 19:10
Contact:

#145773

Post by Pillpopper »

very interesting to say the least. Let us know how it works out for ya
User avatar
ksphotoguy
Donor
Donor
Posts: 332
Joined: Jan 08 2008, 08:24

#145789

Post by ksphotoguy »

did you get the plans for it off a website? if so, could you post a link on here? this looks interesting and could be a fun project.
thanks !!
User avatar
Amp|-|ibious

#145815

Post by Amp|-|ibious »

Holly Cow!! Yes let us know how it works out for you.
User avatar
Trouble
Wordwide & Qualified
Wordwide & Qualified
Posts: 729
Joined: Jan 06 2008, 23:49
Contact:

#145836

Post by Trouble »

THATS FRIGGIN AMAZING....PLEASE POST RESULTS TX/DX/ SWR ETC. GREAT PROJECT
Jesus asked him, "What is your name?" He replied, "My name is Legion, for we are many." -- Mark 5:9
User avatar
BushHog
Verified
Moderator
Moderator
Posts: 3,430
Joined: Nov 27 2007, 19:16
Handle: Bushhog
Real Name: Robert
Radio: general lee
Contact:

#145841

Post by BushHog »

Keep us informed on performance that thing is very interesting
User avatar
causmik
Donor
Donor
Posts: 851
Joined: Oct 04 2006, 07:21
Contact:

#145857

Post by causmik »

I saw one of these mounted 40 feet up from trees to trees. This was a ten meter rig. I think I will try one, for sure.

*****************************************

I GOT ONE........HOW ABOUT YOU? T-SHIRT THAT IS
User avatar
drdx
Donor
Donor
Posts: 5,944
Joined: Apr 25 2007, 12:32
Handle: dollar-98
Real Name: David
Antenna: Many
Radio: Many-
Contact:

#145889

Post by drdx »

Hello there, can't stay long, but for plans for this, just google loop skywire, and you'll see lots on it. There's even a yahoo message group on it. Not new, it made its ham debut in QST back in the 80's. The article is in all the ARRL antenna handbooks. I'm just grabbing their info and scaling to my need. Not much to lose here. My main deal is my mobile, but this is fun. -drdx
Yes it's me, Dollar-98, drdx, the original all maul, shot cawla on workin this no-fade technology.

-drdx
User avatar
PRO151

#146401

Post by PRO151 »

Crap! DRDX, I posted earlier that I might use it after you told us how it worked out for you. Guess I kind of forgot that I just got through having a brand new metal roof put on my house last summer! I wonder how good an attic antenna would work under a steel roof? :D
Not to well probably and I am a forgetful idiot. :)

On another note: Have you not considered the old Flag Pole in the front yard? I think this is what I will try this summer.
User avatar
316
Wordwide & Qualified
Wordwide & Qualified
Posts: 1,462
Joined: Jan 01 2007, 20:43
Handle: 316
Real Name: Skylar
Antenna: Wilson 5K
Radio: RCI 2950 and IC-7000
Contact:

#146456

Post by 316 »

AWESOME HOMEBREW, I love it.
User avatar
PONY EXPRESS
Wordwide & Qualified
Wordwide & Qualified
Posts: 986
Joined: Aug 09 2007, 21:04
Radio: GOLDEN EAGLE Mark IV
Contact:

#146459

Post by PONY EXPRESS »

drdx wrote:My full wave loop skywire base hidden antenna is almost done. Here are some pics of it out in the open before it gets tucked away behind the fence. It is #12 wire, encased in gray pvc, and has a tuning mechanism that I fashioned from common hardware. The common formula for this type if antenna calls for a 37 ft loop. This one is 36 and the tuner can electronically change the loop diameter to anywhere from 36 to 38 feet by sliding the aluminum strap (shown) up or down for tuning after it is placed. I may go with more legs on it, but for now, I'm on to coax hookup and tuning. The legs shown are just what I had around. It will have a final resting height of 4 ft or so. It is all glued and very flexible, so I can move it around as needed. It will be in the yard 1st, and if this location doesn't work, I'll move it to the attic. If it does, a 2nd one will go up there, though not in pvc. Edited in: I'll have to apologize for the trash cans, I've been busy on this. :lol: -drdx


Image

Image

Image
Adding a 1/4 wave matching stub of 75 ohm coax of RG 11U will bring swr down to 1:1 . 984/Freq in MHZ x velocity factor .66 / 4 = 1/4

so basically about 6 ft of RG 11 U will be a 1/4 matching stub
User avatar
drdx
Donor
Donor
Posts: 5,944
Joined: Apr 25 2007, 12:32
Handle: dollar-98
Real Name: David
Antenna: Many
Radio: Many-
Contact:

#146539

Post by drdx »

I have some 75 ohm but shouldn't need it. I talked farmboy through one, and his swr is flat. I've done a vertical one, and it did fine so here's to hoping. I'd like to avoid it if I can, but that's the fun of experimenting. -drdx
Yes it's me, Dollar-98, drdx, the original all maul, shot cawla on workin this no-fade technology.

-drdx
Post Reply