K6sti Yagi Optimizer Download
Here are 2 applications of TANT produced by Vladimir, UR5EAZ
For any standard application of TANT at zero elevation T_antenna = (Tsky + Tearth) / 2 so that independently of the antennas pattern,
a constant T_ant is the outcome. But what if we tilt the Yagi by 90 degrees of elevation in a theoretical experiment? Now former T_sky and T_earth become 'T_front_boresight_of beam' and 'T_rear_lobes'. With this change a number of antenna parameters
useful for studying its suitability for terrestrial weak signal communication can be derived. Former T_sky now is the Brightness Temperature of the sphere that lies in beam direction, while former T_earth becomes the Brightness Temperature of the rear sphere.
(1) The 'Ratio of Radiation Power into Rear Semi-Sphere to Radiation Power into Sphere' MS Excel
This table holds 50, 144 and 432 MHz Yagi-Uda antennas
Download UR5EAZ's MS Excel 'RRF_dB_october.xls' (the file contains step-by-step instructions)
UR5EAZ produced a second interactive MS Excel table. It shows Antenna and System G/T. In here the user can edit T_earth, T_sky, RX NF and bandwidth while the numbers for System G/T adapt.
(2) The 'Unusual application of the TANT program' MS Excel
in which T_sky, Tearth and also RX bandwidth and NF can be edited and G/T and System NF are being computed.
This table holds 50, 144, 432 and 1296 MHz Yagi-Uda antennas at an elevation of 5 and 30 degrees
Download UR5EAZ's MS Excel 'INTERACTIVE_TABLE_JANUARY_17.xls' version 2.3
Vladimir likes to thank Lionel, VE7BQH and Hartmut, DG7YBN for consulting and verifying of the calculation
2016-07-05: Vladimir updated his Excel by adding a calculation of expected level of own EME echos when transmitted and received with
a chosen Yagi at a filled in ouput power and RX Noise Figure. A practical number in practise.
Download UR5EAZ's MS Excel 'INTERACTIVE_TABLE_JULY_5_2016_ECHO_SNR' version 2.9
For any standard application of TANT at zero elevation T_antenna = (Tsky + Tearth) / 2 so that independently of the antennas pattern,
a constant T_ant is the outcome. But what if we tilt the Yagi by 90 degrees of elevation in a theoretical experiment? Now former T_sky and T_earth become 'T_front_boresight_of beam' and 'T_rear_lobes'. With this change a number of antenna parameters
useful for studying its suitability for terrestrial weak signal communication can be derived. Former T_sky now is the Brightness Temperature of the sphere that lies in beam direction, while former T_earth becomes the Brightness Temperature of the rear sphere.
(1) The 'Ratio of Radiation Power into Rear Semi-Sphere to Radiation Power into Sphere' MS Excel
This table holds 50, 144 and 432 MHz Yagi-Uda antennas
Download UR5EAZ's MS Excel 'RRF_dB_october.xls' (the file contains step-by-step instructions)
UR5EAZ produced a second interactive MS Excel table. It shows Antenna and System G/T. In here the user can edit T_earth, T_sky, RX NF and bandwidth while the numbers for System G/T adapt.
(2) The 'Unusual application of the TANT program' MS Excel
in which T_sky, Tearth and also RX bandwidth and NF can be edited and G/T and System NF are being computed.
This table holds 50, 144, 432 and 1296 MHz Yagi-Uda antennas at an elevation of 5 and 30 degrees
Download UR5EAZ's MS Excel 'INTERACTIVE_TABLE_JANUARY_17.xls' version 2.3
Vladimir likes to thank Lionel, VE7BQH and Hartmut, DG7YBN for consulting and verifying of the calculation
2016-07-05: Vladimir updated his Excel by adding a calculation of expected level of own EME echos when transmitted and received with
a chosen Yagi at a filled in ouput power and RX Noise Figure. A practical number in practise.
Download UR5EAZ's MS Excel 'INTERACTIVE_TABLE_JULY_5_2016_ECHO_SNR' version 2.9
- Yagi Optimizer - YO Yagi Optimizer by K6STI is an old MSDOS based antenna modelling software that has been very popular among ham radio community. YO.exe is still today used to optimize Yagi.
- To be used with either NEC-4 or Yagi Optimizer modeling programs. While YO is no longer available,.YAG files can be converted using the MS-DOS based SCALE.exe program that appears in the YAGIS subdirectory when YW is installed. YW comes with the ARRL Antenna Book. G4FGQ's Software.
- Antenna Design Associates, Inc. Is a provider of PC software for the analysis and design of antennas and phased arrays. Our primary product is PCAAD 7.0.
K6sti Yagi Optimizer
Brian Beezley, K6STI designed a 9-element Yagi for the 88-108 MHz VHF-FM band with a horizontal folded dipole and three reflectors. His antenna optimizer managed to achieve 7-8 dBd gain and F/R up to 30dB over entire bandwidth.The distance between first and last element is 100″ or 254 cm.I built two of them in 2013 for receiving vertically polarized signals. Mazatrol programming software, free download. The design used both Yagi Optimizer YO and Antenna Optimizer AO software to set lengths of each antenna. This started with an email from Steve VK6VZ asking about adding a 'moxon' 40M yagi interlaced with my extended boom LG203BA. After finding out what a 'moxon' does, it became apparent that it would be difficult if not impossible.