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holl_ands | Home > LPDA + ZigZagLPA Antennas > UHF LPDA > Browse:EU 15-El FLAT LPDA - OPTUHF 4-El-Pair FLAT-Enh1 FFFDLA - OPTUHF 7-El-Pair FLAT LPDA - Terk HDTVi/aUHF 7-EL-Pair FLAT LPDA - Silver SensorUHF 7-El LPDA w Shorting Stub - LPCAD34UHF 7-El Wedge vs Layered LPDA - OPTUHF 7-El FLAT LPDA vs FFFDLA - OPTUHF 7-El VEE LPDA + Shorting Stub - OptUHF 8-El VEE LPDA + Shorting Stub - OptUHF 8-El LPDA - VA3RRUHF 9-El LPDA w Shorting Stub - LPCAD34UHF 13-El Twin-Boom LPDA - OPTUHF 14-El (300-ohms) LPDA - dnesUHF 14-El VEE LPDA + Shorting Stub - OPTUHF 15-El FLAT LPDA - OPTUHF 45-El LPDA - ZS6BTE
UHF 4-El-Pair FLAT-Enh1 FFFDLA - OPT UHF 4-Element-Pair Flat+Enhanced-Element-1 FFDLA (Free-Form Flat Dipole Logarithmic  Array) analyzed using 4nec2 after determining Dimensions using nikiml's Python Optimization Scripts. Note that this is an ENHANCED version with JUST Front Element Halves extended across the ENTIRE Width.  [Sometimes a mistake leads to a fortuitous discovery.] BOOM LENGTH = 8.5-in. UHF Raw Gain = 6.0 to 8.1 dBi, UHF F/B & F/R Ratio Min = 15.6 dB and SWR (300-ohms) Under 2.0 (Excellent). Hi-VHF Raw Gain = 2.6 to 1.7 dBi,   Hi-VHF F/B & F/R Ratio = 0.1 to 0.3 dB and SWR (75-ohms) Under 142 is Excessive. Date(s): 15 Aug 2015. Album by holl_ands. 1 - 21 of 21 Total. 10742 Visits.
enlarge 117KB, 1024x741 1 UHF 4-El-Pair FLAT-Enh1 FFDLA - OPT 3D View enlarge 117KB, 1152x385 2 UHF 4-El-Pair FLAT-Enh1 FFDLA - OPT Front View [1 Large Square = 1.25 inches] enlarge 257KB, 871x1024 3 UHF 4-El-Pair FLAT-Enh1 FFDLA - OPT Top View [1 Large Square = 1.25 inches] enlarge 177KB, 1024x741 4 UHF 4-El-Pair FLAT-Enh1 FFDLA - OPT UHF Raw Gain = 6.0 to 8.1 dBi UHF F/B & F/R Ratio Min = 15.6 dB enlarge 182KB, 1024x741 5 UHF 4-El-Pair FLAT-Enh1 FFDLA - OPT UHF SWR (300-ohms) Under 2.0 enlarge 222KB, 1024x741 6 UHF 4-El-Pair FLAT-Enh1 FFDLA - OPT UHF Impedance enlarge 301KB, 1024x1024 7 UHF 4-El-Pair FLAT-Enh1 FFDLA - OPT Azimuthal Pattern at 470 MHz enlarge 302KB, 1024x1024 8 UHF 4-El-Pair FLAT-Enh1 FFDLA - OPT Azimuthal Pattern at 530 MHz enlarge 302KB, 1024x1024 9 UHF 4-El-Pair FLAT-Enh1 FFDLA - OPT Azimuthal Pattern at 590 MHz enlarge 298KB, 1024x1024 10 UHF 4-El-Pair FLAT-Enh1 FFDLA - OPT Azimuthal Pattern at 650 MHz enlarge 299KB, 1024x1024 11 UHF 4-El-Pair FLAT-Enh1 FFDLA - OPT Azimuthal Pattern at 698 MHz enlarge 302KB, 1024x1024 12 UHF 4-El-Pair FLAT-Enh1 FFDLA - OPT Azimuthal Pattern at 758 MHz enlarge 302KB, 1024x1024 13 UHF 4-El-Pair FLAT-Enh1 FFDLA - OPT Azimuthal Pattern at 806 MHz enlarge 45KB, 791x1024 14 UHF 4-El-Pair FLAT-Enh1 FFDLA - OPT 4nec2 File Includes Summary of Dimensions enlarge 32KB, 791x1024 15 UHF 4-El-Pair FLAT-Enh1 FFDLA - OPT EVAL Summary of Performance enlarge 175KB, 1024x741 16 UHF 4-El-Pair FLAT-Enh1 FFDLA - OPT Hi-VHF Raw Gain = 2.6 to 1.7 dBi Hi-VHF F/B & F/R Ratio = 0.1 to 0.3 dB enlarge 187KB, 1024x741 17 UHF 4-El-Pair FLAT-Enh1 FFDLA - OPT Hi-VHF SWR (300-ohms) Under 142 is Excessive enlarge 230KB, 1024x741 18 UHF 4-El-Pair FLAT-Enh1 FFDLA - OPT Hi-VHF Impedance enlarge 305KB, 1024x1024 19 UHF 4-El-Pair FLAT-Enh1 FFDLA - OPT Azimuthal Pattern at 174 MHz enlarge 303KB, 1024x1024 20 UHF 4-El-Pair FLAT-Enh1 FFDLA - OPT Azimuthal Pattern at 198 MHz enlarge 301KB, 1024x1024 21 UHF 4-El-Pair FLAT-Enh1 FFDLA - OPT Azimuthal Pattern at 216 MHz
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