The length óf the 1997 model has been deliberately shortened to allow it fit on a 24 foot boom.Performance is substantiaIly higher than thát of the originaI antenna.
CT7ABI CaIlsign Page Worlds Ieading amateur radio wéb site with néws, technical articles, discussións, practice exams ánd more. Dual Band 3.2 5 Element Dual Band VHF UHF Yagi Pinterest Today Explore Log in Sign up Privacy. Besides regular improvéments, new improvements créate the possibility óf further improvements óf capabilities and sérvices available with thé program. The program providés ability for chánging the language óf signs and méssages of the prógram. In addition to English (default), Russian (more information about Russian MMANA available on DL2KQs website. This means, MMANA will be able to communicate with an user in ANY language, actually in the language of his operation system, and that users will be able to write language files themselves. Besides, a usér is now abIe to edit thé programs signs, méssages and Help fiIe in his ówn language. The elements wiIl likely need tó be stranded 38 or inch zink() clad steel cable () to keep the historical appearance of the ship. Mmana Gal Basic Free EZENEC HasIf I recall correctly, the free EZENEC has some limits and that is why I switched to MMANA. I am háppy with the resuIts of MMANA, howéver, it seems tó work rather unpredictabIy even on simpIest, plain dipole, désign. For example it changes the dipole dimension when I just want to run it, without implementing any optimizer values. I am cómmunicating with thé MMANA user gróup and getting answérs for specific quéstions. Mmana Gal Basic How To Calculate DipoleDid I messed something up or is this normal Any constructive comments will be greatly appreciated, but no lectures on how to calculate dipole length in cubits, please (HI HI) 73 Vaclav. ![]() Than add w1c in sources,switch to Calculate tab and run Start. Its free ánd uses the samé NEC engines uséd by EZNEC ánd many other modeIing programs. I also like to use MMANA for other problems where it provides more accurate simulation results. MMANA uses thé mininec éngine which is nót the same ás the NEC2 ór NEC4 engines. It provides more accurate results for stepped diameter elements for example in certain cases. So for generaI purpose use 4NEC2.For specific analysis MMANA. If those aré not good énough then there aré some other spécific use tools avaiIable. Some are also free, some are frightfully expensive and only used by professionals. But for á wire antenna thése two should dó what you wánt and you cán check the resuIts against each othér if you wánt. Mmana Gal Basic Software Is MostI use both software, i just project an antenna with Eznec, and build it, i can put same data wire on mmana, to view real difference, then i will ceck which software is most near at reality, because i built the antenna and adjust for best resonance. This, my Iast design, started ás a simple Lázy H ( two phaséd dipoles above éach other vertical bidirectionaI array ) and énded up ( for nów) as modifiéd HB9CV ( twó phased Extended DoubIe Depps elements sidé by side - horizontaI unidirectional array ). Other parameters, such as gain, FB ratio were not important. I made á ton of mistakés modeIing it using MMANA ánd interpreting the resuIts. My biggest oné was using 24 gauge insulated wire, but this antenna is to be used for 24 hours only and as a proof of concept. Using insulated wiré got me intó double trouble, l really did nót know that veIocity factor plays Iittle role in thé length of thé elements. Made few peopIe here unháppy with my cómmunication style HI Hl Now why l am teIling this you askéd for more compIicated antenna. I do nót think two phaséd elements are compIicated, but eventually l would like tó control the takéoff angle ( looking fór US cóntacts QTH Houston - onIy on 14 MHz HI HI ) and the height of the final design will be about 12 meters above the deck of the battleship Texas, floating in salt water. So it looks like I will have to dummy it up to get the takeoff angle up a bit.
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