Charlie Tango 11m DX Radio Group Forum
Would you like to react to this message? Create an account in a few clicks or log in to continue.


Welcome to the Charlie Tango DX Group. The home of ALL things Radio - CB, 11m DX, Amateur, PMR446, PLD, Network and Data. We welcome all radio enthusiasts of all knowledge levels. Join today and claim your own unique World Famous CT Call-sign
 
HomeEventsCalendarFAQSearchRegisterLog in

Navigation
Useful Radio Sites
Log in
Username:
Password:
Log in automatically: 
:: I forgot my password
CT Bill Board





Views This Year
All Time Views
Classified Adverts

Latest topics
Keywords
bazooka antenna lincoln radio Calling supply frequency SS6900 ALINCO power midland list ss9900 coax callsign call Mobile 6900 display 9900 yaesu Sirio chart Mckinley sign president
QRZ Database

 

 Delta loop for CB.

Go down 
+2
SangueG
53 Prefect
6 posters
AuthorMessage
53 Prefect
Senior contributor
Senior contributor
53 Prefect


Posts : 110
Times Thanked : 5
Join date : 2021-02-08
QTH or Location : Coldwater, Ontario
Equipment Used : ICOM at the moment
Age : 64

Delta loop for CB. Empty
PostSubject: Delta loop for CB.   Delta loop for CB. Icon_minitimeMon Apr 26, 2021 3:46 pm

Anyone tried a delta loop for CB? Full wave version. Thinking of making one, that or a half wave OCF dipole.
Back to top Go down
View user profile
SangueG
Major contributor
Major contributor
SangueG


Call Sign : 26-CT-3971 / M7TDV
Posts : 308
Times Thanked : 17
Join date : 2021-01-30
QTH or Location : Cirencester, Gloucestershire
Equipment Used : SS6900N, Xiegu G90, DX-300 for SWL, all antennas home-made

Delta loop for CB. Empty
PostSubject: Re: Delta loop for CB.   Delta loop for CB. Icon_minitimeMon Apr 26, 2021 7:59 pm

Yes. Played with vertically polarized single element delta loops and quads in the early '90s on 11m. Worked much of Europe and many post-soviet states using them with relatively little power.. whatever the Jumbo 3 peaked out at, think mine was about 15W. Conditions were great then though, so probably not all just down to my antenna creations Smile For local seemed about as good as the silver rod I had at the time, but a bit directional.
Back to top Go down
View user profile
53 Prefect
Senior contributor
Senior contributor
53 Prefect


Posts : 110
Times Thanked : 5
Join date : 2021-02-08
QTH or Location : Coldwater, Ontario
Equipment Used : ICOM at the moment
Age : 64

Delta loop for CB. Empty
PostSubject: Re: Delta loop for CB.   Delta loop for CB. Icon_minitimeMon Apr 26, 2021 8:10 pm

Well, that is promising then.  Just built the 4:1 Balun, dug out 3 insulators, And sure I have some wire somewhere.

SangueG likes this post

Back to top Go down
View user profile
Gast
Guest




Delta loop for CB. Empty
PostSubject: Re: Delta loop for CB.   Delta loop for CB. Icon_minitimeTue Apr 27, 2021 9:39 am

i`m building a loop at the moment. just to try what it does. 2*2,5M with a butterfly 

loop
Back to top Go down
53 Prefect
Senior contributor
Senior contributor
53 Prefect


Posts : 110
Times Thanked : 5
Join date : 2021-02-08
QTH or Location : Coldwater, Ontario
Equipment Used : ICOM at the moment
Age : 64

Delta loop for CB. Empty
PostSubject: Re: Delta loop for CB.   Delta loop for CB. Icon_minitimeTue Apr 27, 2021 10:12 pm

Ready for a bit of assembly. But all there. CB band delta loop.Delta loop for CB. Wire10

glenn dog likes this post

Back to top Go down
View user profile
oilygarage
New Member
New Member



Posts : 4
Times Thanked : 0
Join date : 2019-07-03

Delta loop for CB. Empty
PostSubject: Re: Delta loop for CB.   Delta loop for CB. Icon_minitimeFri Apr 30, 2021 9:53 am

It will work well.  Quads and delta loops are excellent.
If you are just using a single full wave loop it will have an impedance of around 200 ohms, not a brilliant match to your 50 ohm coax.  So you may want to make a 4:1 balun.  You may get away with half a dozen turns of coax about 8" in diameter to choke off the current from the coax outer braid.
Remember that a quad is a balanced antenna and coax unbalanced.  Unless you choke off the radio frequency current from the outer braid of the coax you will radiate from and receive from the coax.  Not good.  

You can arrange the delta loop for horizontal polarisation by feeding it in the middle of the bottom of the triangle or vertical polarisation by feeding it a quarter wave (2.7m) from the top down one side of the triangle - in other words a short way up the side leg.  If most of your contacts are with locals using verticals this will work better.

I used to have an 80m amateur band delta loop which worked amazingly and have built quads before and they always work well.

I just noticed that you have a feedpoint "box" there, which should hopefully be that 4:1 matching transformer

cheers
Dave 26CT3140
Back to top Go down
View user profile
Bean
Senior contributor
Senior contributor



Posts : 186
Times Thanked : 6
Join date : 2019-06-29

Delta loop for CB. Empty
PostSubject: Re: Delta loop for CB.   Delta loop for CB. Icon_minitimeFri Apr 30, 2021 11:38 am

I have a homemade Deltaloop ( somewhere ) I designed it for 50 Ohm impedance on the 10M band , the frame was in the form of a "T" with the bottom sections of a windjammer 10m fibreglass pole as the vertical part and a 3m length of 20mm pvc conduit ( stiffened by a 1.5m long bit of fibreglass tube at center) and made with 1.5mm insulated copper wire , top bit of wire was 2.96metres I think with rest of loop going down each side to feed point , so short on top with longer sides, with an air choke at feed point. Horizontal polarization with some gain over a vertical at usefull DX angles 5>9 degrees take off, feed point was only 3m off ground but worked well.
Back to top Go down
View user profile
53 Prefect
Senior contributor
Senior contributor
53 Prefect


Posts : 110
Times Thanked : 5
Join date : 2021-02-08
QTH or Location : Coldwater, Ontario
Equipment Used : ICOM at the moment
Age : 64

Delta loop for CB. Empty
PostSubject: Re: Delta loop for CB.   Delta loop for CB. Icon_minitimeFri Apr 30, 2021 2:32 pm

Yes, as I said, I have built a 4: balun. I have used I 20m delta loop in the past, Think I still have a brand new one somewhere, worked OK.
Back to top Go down
View user profile
Onassis
New Member
New Member
Onassis


Call Sign : 1-CT-025
Posts : 4
Times Thanked : 0
Join date : 2021-09-28
QTH or Location : Rimini Italy
Equipment Used : President Randy 3 - UK Configuration + Big Signal Delta Loop
Age : 61

Delta loop for CB. Empty
PostSubject: Big Signal Delta Loop   Delta loop for CB. Icon_minitimeTue Sep 28, 2021 4:01 pm

I'm using a big signal delta loop in horizontal configuration in Italy and it covers pretty much all of Europe and sometimes beyond. 

I paid about €75 euro for mine and it is WELL worth the cost even at 4 Watts TX.

kilomike and SangueG like this post

Back to top Go down
View user profile
kilomike
10 + Year member
10 +  Year  member



Call Sign : 26CT360
Posts : 84
Times Thanked : 1
Join date : 2019-06-28
QTH or Location : Hertfordshire
Equipment Used : Icom/ Kenwood/ Yaesu
Age : 54

Delta loop for CB. Empty
PostSubject: Re: Delta loop for CB.   Delta loop for CB. Icon_minitimeSun Oct 31, 2021 10:08 am

Very Happy I have the same antenna Onassis from Big signal, i use it in the loft works on 11/10m and 20m with the tuner.

works very well
Back to top Go down
View user profile
Sponsored content





Delta loop for CB. Empty
PostSubject: Re: Delta loop for CB.   Delta loop for CB. Icon_minitime

Back to top Go down
 
Delta loop for CB.
Back to top 
Page 1 of 1

Permissions in this forum:You cannot reply to topics in this forum
Charlie Tango 11m DX Radio Group Forum :: Help and Discussion Forums :: Antenna Discussion-
Jump to: