'Ugly Balun' construction used on a 40 meter vertical! Closeup of the ZL1ALZ 'Ugly Balun' The VE2ITZ Balun with Sloper Antenna! Exellent results! Never had such an easy time at tuning the sloper antennas with the 'Ugly Balun'! By the way; the balun consists of 20 feet of coax wound around a 2 and a half inch diameter plastic bottle.
Wire lengths for the 4:1 ratio in models 4130, 4132, 4134, 4932 and 4935. Usually any wire length that is non resonant, like those shown above, will work with the 4:1 ratio. As an example, a 28-31 foot wire will typically allow 40 thru 10 meter coverage and a 43-50 foot wire will provide access to 80 thru 10 meters.
Balun 1:4, dual coil Guanella balun for 1 to 55 MHz CC-BY OH1AYR Rev 1.1 Date 07.10.2013 Dual coil current balun 1:4 This is a traditional Guanella-type current balun, used as impedance transformer with high impedance balanced transmitting antennas. This medium power balun can handle far over 100W of …
korpi.biz/balun 1 to 4 dual.pdfWire lengths for the 4:1 ratio in models 4130, 4132, 4134, 4932 and 4935. Usually any wire length that is non resonant, like those shown above, will work with the 4:1 ratio. As an example, a 28-31 foot wire will typically allow 40 thru 10 meter coverage and a 43-50 foot wire will provide access to 80 thru 10 meters.
https://www.balundesigns.com/content/Wire Lengths for 4 and 9-1 ununs.pdfconnected together. This then forms a 4:1 balun which works at only one frequency. Another narrow band design is to use a λ/4 length of metal pipe. The coaxial cable is placed inside the pipe; at one end the braid is wired to the pipe while at the other end no connection is made to the pipe.
laarrl.org/pdfs/upthecoax3.pdfWhen we say a Balun or UNUN is a 4 to 1 device it will work just as well backwards. A 4 to1 balun can also match 50 Ohm to 12 Ohms, and a 9 to 1 can match 50 Ohm to 5 ohms. Working in the forward direction a 1 to 1 is 50 in 50 out. A '4 to 1' will convert the 50 ohms of your coax to 200 ohms ' ie 4 times'
www.philipstorr.id.au/radio/technical/Balun and UnUn.pdfThe 4:1 balun and coax fed remote tuner and also the broadband antenna Ununs produced signal levels about 20dB down on 160m, 6dB down on 80m and an average of about 3db down with dips of > 6dB on 40m through to 10m. Obviously these parameters will change with …
https://www.g8jnj.net/33ft Verticals and Ununs.pdfCVARC 4:1 Balun Project Kit by AE6YC New to the amateur radio world or have been around long enough to be considered an old timer, whichever you will never forget the first kit or homebrew project you built. For me it was a ‘cat-whisker’
www.cvarc.org/resources/Tech_Articles/dual_core_balun_construction_project.pdfInstallation of the 9:1 balun/unun: The End-Fed is connected to one terminal of the 'high' winding and the other terminal is connected to a good 'EARTH' ground. One or more copper rods or pipes driven, at least, 4 feet into the earth near the dwelling entry point (2 or 3, is better, being spaced about 4 feet apart).
mobileers.com/main/wp-content/uploads/2013/01/9-to-1-Balun-for-End-Fed-Antenna.pdfhigh-frequencyresponses of the 4 1 balun. This article can besaid to bea complemenl tothe 4:1balunarticle. Inthiscaseit treatsthe much more popular 1.1 balun. It begins with my viewon when to usea balun. Even though much of what has been written here is taken from my Summer 1992 article in Communica tions Quarterly.' it is presented again here,
https://nonstopsystems.com/radio/pdf-ant/balun-sevick.pdfbetter if the balun passed the line impedance through without stepping impedance down. 3. 4:1 Baluns inside antenna tuners, which are usually voltage-type baluns, are generally poor performers when presented with mismatched loads. 1:1 current baluns are generally much more efficient and have a much wider operating impedance and frequency range. 4.
static.dxengineering.com/pdf/Choosing the Correct Balun.pdf