TAGRA BT-210 Ringo, the European clone of AVANTI AV-170, 5/8 antenna 

+ADOMITUS OH, thank you again. The TAGRA BT210 isn't more in the height. It was broken in a big storm at April 2012. Now I've an original SHAKESPEARE 176-Stile (SUPER BIG STICK) vertical coaxial Dipole on the mast. This stick works not bad... Best 73's to you...

+Aerial Heights Yes of course, it's a real 5/8 wave antenna with a height of about 6.8 mtrs., like the PENETRATOR 500. Happy airwaves to you..

+SWIZZRADIOS - Not so. Actually Aerial Heights has a good point, unless you are using it as a 5/8 wave on 28.372mhz. According to the given measurement of the radiator (6530mm/ 260" electrically) this would be a true 5/8 of a 416" full wavelength, which comes out to 28.372mhz. It is as are many other so-called 5/8 waves, about a foot short of a true 5/8, but matched for probably somewhere around 27.730mhz. No doubt a competent performer, although too short to be compared directly with a 27.0mhz-tuned original 22' 6" Penetrator-500 true 5/8 radiator, nor a 27.110mhz-tuned 22' 5" Avanti AV-170 Sigma II 5/8, true 5/8 radiator. You must multiply the calculated .625 wavelength radiator by the velocity factor of aluminum in air of .9979, and subtract the average circumference of the radiator of approx 2.5" in order to calculate the correct mechanical length electrically equal to a true 5/8.

+ADOMITUS Thank you for your very exact info. The TAGRA BT210 isn't more in the height. It was broken in a big storm in the Spring 2012. Now I've an original SHAKESPEARE 176-Stile (SUPER BIG STICK) vertical coaxial Dipole on the mast. Works not bad... Best 73's to you...

Thank you Dietrich for your post! CB-radios and antennas are a passion of mine. It was a beautiful time in the 80ies: Big CBer Partys, out of iPhones and facebook profiles... Happy airwaves to you..

I am currently working on transforming a 5/8 wave Maco V5000 into a .64 wave. I'll let you know how it comes out. I have a photo of the pattern of 5/8 wave, point 64 wave and the pattern above point 64 wave. www.k3dav.com/64wavelengthsecret.htm Scroll down to the photos on this webpage K3DAV and check out the computer generated antenna patterns Keep up the good work Rekindling The Reformation !!

Figure (A) The black vertical line represents the antenna. In this case, a 5/8 wave. We are looking at it from the side. The GOLD color area represents the radiating pattern of the RF signal. Note how it stretches outward towards the horizon. Figure (B) represents a .64 wave antenna. The gold area is the pattern of the 5/8 wave, and the red area represents the extended pattern outwards of the .64 antennas pattern. Figure (C) Represents any wavelength OVER a .64. As the wavelength goes over the .64 maximum, the radiating pattern (Shown as BLUE) begins to extend more upwards and downwards, but decreases going outwards. This lowers the signals going out and coming in from greater distances. The gold and red areas behind the blue, shows the original pattern of the 5/8 and .64 wave antennas. It also shows how much signal strength was lost by going over the .64 wavelength maximum for good radiating patterns. As the length of the antenna gets even longer, the blue area will extend higher and lower, and decrease even more going outward towards the horizon. At a full 1.0 wavelength, the blue area would look like a football standing on one tip. Very little RF would radiate off the sides. Most of the RF would be lost to the sky and the ground. In other words, the .64 wave is the most efficient length you can have for any transmitting antenna on any frequency. Yes the .64 wave also needs a matching coil network to correct the impedance mismatch. But because of the extra length of the main element, the coil uses less windings. Less windings means less power loss and more RF to the main element. Less power loss and a greater radiating pattern. It's a win - win situation. www.k3dav.com/64wavelengthsecret.htm Keep up the good work Rekindling The Reformation !!

correct

@@dietrichzumwald4777I'm wondering how well your build turned out? I've kind of given up on 5/8 wave (.64) antennas due to the donut of dead area around 30 miles out - due to the upper lobe reflecting on the D-layer and coming back down, cancelling the lower lobe energy, usually about 25-35 miles out. I prefer my home-built (home-brew?) 46' dual polarization omni. - I'm seeing about 2 s-units meter strength over the Penetrator 500. There are ways of making taller then .64 antennas which do not phase poorly and hence have greater gain than even a .64.

Hello Mister CB-Radio fan, thank you for your interest on my channel. All in all, CB-radios and -antennas are a passion of me. It was a beautiful time in the 80ies: Big CBiers parties, without smartphones and instagram profiles. Best 73 to you and yours...

Hello dr OM, thank you for the info. You'r welcome. Happy easter to you and yours..

Only trying to be helpful. :) I did not suggest it as a mean or nasty element Easter is actually Ishtar and IF it falls upon "the actual Christian Holiday" of the resurrection, the Pope will hold Easter off for one week. That particular holiday is a pagan holiday Keep up the good work Rekindling The Reformation !!

@@dietrichzumwald4777 If pagans want to celebrate something on that day it's bad logic to imagine that if Christians celebrate the birth of the Man-God in the flesh on that same day it has anymore to do with paganism than the pagan celebration has to do with Christianity.

Hello dr friend, the TAGRA BT-210 is broken in 2013. Please take a look into my new video: ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-ENI44jMndXc.html Best 73 to you and yours...

Mister DrumminSon hello, thank you for your interest. The TAGRA BT-210 isn't more installed. It was defect after the winterstorm in 2013. Take a look into my newer video: ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-ENI44jMndXc.html Best 73 to you...

Mr Tricia hello, thank you for your interest. Yes, your antenna was a TAGRA F-2 (1/2) with regulable base-coil... Happy airwaves to you...

@@SWIZZRADIOS thank you I can't find any info on it anywhere

Hello dr CB-radio friend, thank you for your interest. Best 73 to you...

Hello mister DAVID, thank you for your visit on my channel. All in all, CB- radios and -antennas are a passion of me. It was a beautiful time in the 80ies: Big CBiers parties, without smartphones and instagram profiles. Best 73 to you and yours.

Mister Steve hello, thank you for your interest on my channel. I think to keep the radial 2 feet above the roof or building for best performance. That's my input for you.

Yeah, it's a very rugged antenna. But you can't order this, the antenna is from 1982. good luck to find one...

Arranjo

Mister Fernando hello, thank you for your interest. All in all, CB-radios and antennas are a passion of me. It was a beautiful time in the 80ies: Big CBiers parties, without smartphones and facebook profiles. So I'm not on face book, but on 27 MHz… Best 73s and happy airwaves to you..

Mister Sergio hello, thank you for your interest. I'll search the diagram in my database. Best vibes to you…

@@SWIZZRADIOS OK. MY FRIEND TKS 73

Hello dr CB-radio fan, thank you for your interest. I'm sorry this antenna isn't for sale in the moment. Best 73's to you...

Oh yes, the Track "chinese revenge" by KOTO is it.

presio de la antena Presio de la antena

My Friend Pedro hello. The Tagra BT-210 is falling down by the strong Winter. Take a look into my Video. ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-ENI44jMndXc.html

Mr David hello, thank you for your interest. Yes, I know the original RINGO Antenna by CUSHCRAFT. I have had the 10m Version many years ago on my roof. In the Moment, I've the 6m version stored in my cellar. The 5/8 Ringo is only the name of this antenna by TAGRA. But I can't change the Name of the RINGO 5/8, it's not my brand. Best 73 to you...

It is the opposite, the antennas you mention are newer american copies of inferior build quality than the Tagra BT 210, but this one has already been discontinued, only Hy Gain penetrator of the 60´s is at the same level.

Mister Jorge hello, thank you for your interest. The TAGRA BT-210 isn't more in the hight. Please take a look in this video: ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-ENI44jMndXc.html Best regards to you and yours...

@@SWIZZRADIOS thanks 73 from Argentina

Thanks alot, you're welcome. Happy airwaves to you...