Hi, We were working on our 2 Field Day antennas and the question came up about choke baluns and whether they are needed on this antenna. The manufacturer say no but Cushcraft's instructions for one o
If you look at Mosley's website (http://www.mosley-electronics.com/faq.htm), they clearly use their split-dipole direct-feed approach as a marketing strategy -- simplicity, stability, etc. But any ra
Author: "James R. Duffey" <JamesDuffey@comcast.net>
Date: Tue, 13 Jul 2004 17:43:48 -0600
Bill - You asked "We know that common-mode currents on the coax CAN cause problems -- and since it's so easy to prevent this, why not do it?" It is good engineering practice to use a balun whenever a
A good ham friend of mine in former East Germany, together with a very reputable German antenna specialist, many years ago made some measurements of 432 MHz yagis fed with split dipoles and coax look
The worse thing about any debate is all the bad data that pours out of well-intentioned but totally meaningless efforts to prove or disprove points. with a very some measurements for pattern baluns f
Tom, if I say that the test were made at 432 MHz and they were pretty conclusive, they were. On 432 MHz ! If relevant to HF is another matter, and therefore I stated nothing but 432 MHz, clearly reme
Hi Peter, This is all a very important discussion!! were pretty No. The test was only pretty conclusive for that exact test setup including cable lengths and types and that antenna on 432MHz. The tes
Wow, What a great question and what a great bunch of answers. I too have used the TA-33 and have used the recommended choke balun, a 1:1 balun with a toroidal core, and feeding the thing directly. Fr
methods, I can tell you this: The TA-33 will radiate poorly in any direction it is pointed. As far as I was concerned the TA-33 could have been a dipole or even a high 50 ohm resistor because it did
And the even so, the pattern on VHF/UHF yagis can be so good that in practice you will not notice any difference. This is also true. Tested and proven, a number of times by myself and others. 73/Pete