DG7YBN / 432 MHz VE7BQH G/T Table

  Issue 11, Oct. 2017




                             

      The 432 MHz G/T Table is a compilation of simulations of 4-Yagi-Bays at 432.1 MHz. The main purpose of this table is to enable you to select a
      Yagi design by its performance level for non-terrestrial weak signal work such as EME. Thus the G/T number presented is computed for an elevation
      of the array of 30 degrees as a typical position of the moon. Some theoretical details can be found here

     

Enter T_sky, K >>>> 20 Enter T_earth, K >>>> 350
<1  Ant  >   <<<<<<<<  4 Antennas >>>>>>>  <<<<<<<<<<<<<<< 1 Antenna  >>>>>>>>>>>>>   <  4 Ant.>
                <  H Plane           >          KF2YN
TYPE OF L GAIN E H Ga Tlos Ta F/R 1st SL 2nd SL Z VSWR Ant G/T Feed Convergence
ANTENNA     λ     (dBi) (M) (M) (dBi) (K) (K) (dB) (dB) (dB) (ohms) Bandwidth (dB) System Correction req.
           
KF2YN Boxkite4 0,44 13,24 1,20 0,85 19,29 5,0 52,9 26,1 21,5 none 52,5 1.10:1 2,05 Bent Dipole Yes 34,9
KF2YN Boxkite 7 1,34 15,64 1,40 1,17 21,56 8,1 42,3 27,6 27,5 21,3 51,7 1.05:1 5,30 Bent Dipole Yes 23,6
DG7YBN GTV70-8n 1,84 13,60 1,07 0,93 19,56 4,9 41,8 24,8 16,5 21,7 48,8 1.83:1 3,35 Bent Dipole No
KF2YN Boxkite 10 2,37 16,55 1,50 1,30 22,46 8,7 38,3 28,3 19,2 28,0 48,7 1.08:1 6,63 Bent Dipole Yes 19,4
InnoV 10 LFA 2,43 14,43 1,12 1,03 20,36 3,7 36,4 23,8 17,2 23,3 50,7 1.13:1 4,75 LFA-LOOP Yes 17,3
YU7EF EF7010-5 2,59 14,64 1,14 1,05 20,56 5,0 37,0 22,5 16,9 24,1 50,0 1.06:1 4,88 Dipole No 18,0
+DG7YBN GTV 70-11w 2,81 14,97 1,18 1,09 20,9 2,7 32,8 27,8 15,9 23,4 50,0 1.06:1 5,74 Bent Dipole No 13,6
YU7EF EF7011B-5 2,87 15,07 1,20 1,11 21,00 4,7 36,1 25,4 16,9 20,1 49,0 1.56:1 5,42 Dipole No 17,1
Innov 11 LFA 2,87 15,05 1,20 1,10 20,98 4,0 33,7 25,6 16,4 23,8 50,4 1.07:1 5,70 LFA-LOOP Yes 14,6
*Innov 11 LFA 2,87 15,05 1,19 1,10 20,96 4,0 33,6 25,6 16,4 23,8 50,4 1.07:1 5,69 LFA-LOOP Yes 14,5
EAntenna 432LFA11 2,94 15,09 1,20 1,11 21,02 3,9 34,1 25,4 17,0 24,9 47,9 1.28:1 5,69 LFA-LOOP Yes 15,0
*KF2YN Polly 12 CR 3,17 15,70 1,30 1,30 21,74 3,2 32,3 25,4 16,1 22,1 48,3 1.17:1 6,65 Multi-Pol loop No 13,0
InnoV 12 LFA 3,29 15,48 1,24 1,16 21,40 4,0 31,2 28,3 16,8 23,3 50,1 1.07:1 6,46 LFA-LOOP Yes 11,8
*InnoV 12 LFA 3,29 15,48 1,23 1,15 21,37 4,0 31,0 28,3 16,8 23,3 50,1 1.07:1 6,46 LFA-LOOP Yes 11,6
YU7EF EF7012B-5 3,30 15,58 1,26 1,17 21,50 4,9 33,3 24,0 17,6 21,3 48,6 1.40:1 6,28 Dipole No 14,1
EAntenna 432LFA12 3,31 15,32 1,23 1,14 21,24 4,3 33,2 28,6 16,1 24,5 50,1 1.45:1 6,03 LFA-LOOP Yes 14,0
KF2YN Boxkite 13 3,37 17,38 1,63 1,50 23,29 9,3 39,4 28,0 18,0 29,0 50,9 1.09:1 7,33 Bent Dipole Yes 20,6
Innov 13 LFA 3,72 15,92 1,31 1,23 21,85 4,5 30,9 29,5 16,5 23,2 50,1 1.15:1 6,95 LFA-LOOP Yes 11,6
*InnoV 13 LFA 3,72 15,92 1,30 1,22 21,83 4,5 30,8 29,5 16,5 23,2 50,1 1.15:1 6,95 LFA-LOOP Yes 11,4
YU7EF EF7013M-6 3,83 16,11 1,33 1,25 22,01 4,7 32,9 26,4 18,7 21,8 49,4 1.06:1 6,84 Dipole No 13,7
M2 432-12EME 3,98 16,22 1,39 1,32 22,11 3,9 40,5 19,7 12,3 16,0 200,4 1.49:1 6,03 Folded Dipole Yes 21,8
*M2 432-12EME 3,98 16,22 1,42 1,37 22,17 3,9 40,9 19,7 12,3 16,0 200,4 1.49:1 6,05 Folded Dipole Yes 22,2
F9FT 19 4,02 15,96 1,33 1,26 21,88 6,1 39,1 21,5 14,1 17,5 55,7 1.14:1 5,96 Folded Dipole Yes 20,2
DG7YBN Tonna 19 mod 4,02 16,17 1,35 1,27 22,07 6,1 33,8 22,4 14,3 18,7 44,7 1.15:1 6,79 Folded Dipole Yes 14,6
InnoV 14 LFA 4,03 16,46 1,38 1,32 22,31 4,5 30,0 30,8 16,0 22,3 52,6 1.14:1 7,54 LFA-LOOP Yes 10,6
*InnoV 14 LFA 4,03 16,46 1,36 1,29 22,26 4,5 30,0 30,6 16,0 22,3 52,6 1.14:1 7,49 LFA-LOOP Yes 10,6
+DG7YBN GTV70-14 4,06 16,38 1,38 1,31 22,30 3,5 30,7 26,9 15,9 20,6 49,4 1.51:1 7,43 Bent Dipole No 11,3
YU7EF EF7014M-6 4,24 16,50 1,39 1,32 22,39 4,5 33,3 23,8 17,9 20,5 49,5 1.11:1 7,17 Dipole No 14,1
RA3AQ AQ70-14f 4,30 16,63 1,41 1,34 22,54 6,9 33,6 26,1 15,9 20,0 52,8 1.09:1 7,28 Folded Dipole Yes 14,4
KF2YN Boxkite 16 4,37 18,02 1,74 1,61 23,85 10,2 41,2 27,4 17,0 25,0 49,1 1.06:1 7,70 Bent Dipole Yes 22,5
*KF2YN Polly 15 CR 4,44 16,76 1,40 1,40 22,66 3,5 30,2 26,7 16,3 20,3 47,4 1.21:1 7,86 Multi-pol loop No 10,8
I0JXX 16JXX70 old ver 4,46 16,53 1,41 1,33 22,44 4,9 33,6 23,4 16,6 21,3 201,8 1.05:1 7,18 T Match Yes 14,4
I0JXX 32JXX70 XPOL H new ver 4,46 16,28 1,37 1,37 22,17 5,9 42,0 18,6 15,0 18,0 206,6 1.03:1 5,94 T Match Yes 23,3
I0JXX 32JXX70 XPOL V new ver 4,46 16,28 1,37 1,37 22,18 4,4 41,2 18,6 15,0 18,0 206,6 1.03:1 6,03 T Match Yes 22,5
EAntenna 432LFA15 4,58 15,66 1,22 1,14 21,36 4,0 28,5 29,2 26,2 29,1 48,4 1.25:1 6,81 LFA-LOOP Yes 9,0
InnoV 15 LFA 4,59 16,68 1,42 1,34 22,57 4,8 30,0 31,1 15,8 22,1 51,1 1.08:1 7,81 LFA-LOOP Yes 10,6
YU7EF EF7015M-5 4,69 16,80 1,43 1,36 22,66 5,4 33,6 24,3 19,0 21,1 49,5 1.03:1 7,40 Dipole No 14,4
Konni F20 4,77 16,69 1,44 1,36 22,61 1,7 31,6 21,9 14,0 16,4 210,7 1.06:1 7,62 Folded Dipole Yes 12,3
WiMo 15 (YU7EF) 4,89 17,06 1,46 1,30 22,87 4,3 30,0 22,3 17,2 20,8 174,5 3.05:1 8,10 Folded Dipole Yes 10,6
InnoV 16 LFA 5,19 17,27 1,50 1,43 23,15 4,8 29,7 29,3 18,1 23,3 48,4 1.19:1 8,43 LFA-LOOP Yes 10,2
+DG7YBN GTV70-17m 5,23 17,29 1,51 1,44 23,20 3,0 29,4 31,5 14,7 20,8 48,5 1.17:1 8,52 Bent Dipole No
InnoV 17 LFA 5,33 17,25 1,49 1,42 23,11 4,3 29,6 27,4 18,1 23,5 49,9 1.03:1 8,40 LFA-LOOP Yes 10,2
*InnoV 17 LFA 5,33 17,25 1,45 1,45 23,11 4,3 29,5 27,4 18,1 23,5 49,9 1.03:1 8,41 LFA-LOOP Yes 10,1
YU7EF EF7017M-5 5,56 17,41 1,52 1,44 23,22 5,6 33,4 25,0 18,5 22,3 50,7 1.06:1 7,98 Dipole No 14,2
*KF2YN Polly 18 CR 5,69 17,79 1,95 1,95 23,96 3,7 31,4 28,3 14,8 20,0 48,1 1.18:1 8,99 Multi-Pol loop No 12,1
RA3AQ AQ70-18f 5,74 17,76 1,59 1,53 23,64 6,1 32,6 27,2 16,1 20,5 51,7 1.08:1 8,51 Folded Dipole Yes 13,4
InnoV 18 LFA 5,76 17,49 1,52 1,45 23,33 4,3 28,9 28,2 18,5 24,8 49,8 1.05:1 8,72 LFA-LOOP Yes 9,5
+DG7YBN GTV70-19 5,93 17,80 1,60 1,54 23,68 3,6 29,5 29,6 15,4 20,2 49,3 1.28:1 8,98 Bent Dipole No 10,1
+Konni F20 Mod YBN 5,94 17,52 1,58 1,51 23,39 1,5 31,7 23,2 14,3 16,0 220,4 1.07:1 8,38 Folded Dipole Yes 12,4
YU7EF EF7018M-5 6,00 17,61 1,54 1,48 23,39 5,1 31,7 26,4 17,7 22,6 49,3 1.08:1 8,38 Dipole No 12,4
K1FO 22 6,10 17,85 1,63 1,56 23,75 4,8 33,6 20,6 15,4 21,2 200,8 1.34:1 8,49 T Match Yes 14,4
EAntenna 432LFA18 6,13 17,88 1,61 1,55 23,76 5,6 29,7 30,4 16,0 26,2 47,6 1.42:1 9,03 LFA-LOOP Yes 10,3
YU7EF EF7019B-5 6,43 17,91 1,60 1,54 23,72 5,7 32,7 25,7 17,8 23,4 50,5 1.12:1 8,57 Dipole No 13,5
KF2YN Polly 20 CR 6,50 18,30 1,90 1,90 24,43 3,8 31,1 28,7 14,4 19,5 48,8 1.21:1 9,50 Multi-Pol loop No 11,8
InnoV 19 LFA 6,54 18,18 1,68 1,63 24,10 5,0 29,2 34,3 15,0 20,1 47,6 1.09:1 9,45 LFA-LOOP Yes 9,7
Tonna 21 DX 6,61 17,91 1,67 1,61 23,80 6,7 41,3 20,5 14,5 18,2 58,4 2.32:1 7,64 Folded Dipole Yes 22,6
KF2YN Boxkite 22 6,70 19,26 1,99 1,90 25,14 10,8 40,2 29,0 16,2 21,2 52,1 1.17:1 9,10 Bent Dipole Yes 21,4
InnoV 20 LFA 6,99 18,28 1,73 1,67 24,31 5,0 28,1 35,2 15,1 20,7 50,5 1.09:1 9,82 LFA-LOOP Yes 8,6
+YU7XL QY721104D14 7,04 18,42 1,88 1,82 24,47 3,4 27,2 27,7 18,5 22,8 201,1 1.28:1 10,12 LFA 200 Ώ Yes 7,6
RA3AQ AQ70-21f 7,14 18,54 1,73 1,67 24,41 6,9 31,0 27,9 16,8 21,3 52,3 1.07:1 9,50 Folded Dipole Yes 11,6
BVO70-7.2 WL modified 7,16 18,49 1,76 1,70 24,42 3,8 32,9 22,6 14,9 19,1 49,5 1.06:1 9,25 Dipole No 13,7
Directive DSEFO432-25 7,39 18,57 1,74 1,69 24,47 5,1 31,0 25,4 15,9 20,5 198,2 1.38:1 9,55 T Match Yes 11,7
*Directive DSEFO432-25  7,39 18,57 1,78 1,68 24,47 4,9 30,9 25,4 15,9 20,5 198,2 1.38:1 9,58 T Match Yes 11,5
Directive DSEFO432-25XPOL H 7,39 18,57 1,73 1,73 24,41 5,4 31,4 25,4 15,9 20,5 198,2 1.38:1 9,44 T Match Yes 12,1
Directive DSEFO432-25XPOL V 7,39 18,57 1,73 1,73 24,48 5,4 31,1 25,4 15,9 20,5 198,2 !.38:1 9,55 T Match Yes 11,8
+DG7YBN GTV70-23 7,55 18,65 1,76 1,70 24,51 3,8 27,8 32,3 15,7 21,8 48,4 1.56:1 10,07 Bent Dipole Yes 8,3
YU7EF EF7021B-5 7,59 18,66 1,74 1,68 24,50 7,8 32,3 29,6 20,3 21,7 50,2 1.33:1 9,41 Dipole No 13,0
I0JXX 25JXX70 7,91 18,53 1,74 1,68 24,41 5,6 32,7 23,9 21,3 24,8 198,6 1.12:1 9,27 T Match Yes 13,4
KF2YN Polly 24 CR 8,15 19,15 1,90 1,90 25,11 3,7 31,0 29,5 13,1 19,1 51,8 1.14:1 10,20 Multi-Pol loop No 11,7
+YU7XL QY724104D17 8,35 19,01 2,00 1,90 24,99 3,4 27,1 31,7 18,7 22,8 199,0 1.23:1 10,66 LFA 200 Ώ Yes 7,5
+DG7YBN GTV70-25 8,39 18,97 1,80 1,74 24,84 3,2 26,4 32,6 16,3 22,1 41,2 1.25;1 10,62 Bent Dipole No 6,8
InnoV 23 LFA  8,40 19,16 1,87 1,82 25,08 5,6 28,2 31,8 15,9 21,7 45,2 1.23:1 10,59 LFA-LOOP Yes 8,6
*InnoV 23 LFA 8,40 19,16 1,89 1,85 25,06 5,6 28,2 31,8 15,9 21,7 45,2 1.23:1 10,57 LFA-LOOP Yes 8,6
DJ9BV BVO70-8.5wl 8,43 19,14 1,95 1,90 25,13 5,0 37,1 24,3 14,9 17,8 203,9 1.45:1 9,44 Folded Dipole Yes 18,1
DJ9BV OPT70-8.5wl 8,44 19,04 1,80 1,75 24,87 4,9 33,9 23,2 15,8 20,1 186,1 1.56:1 9,57 Folded Dipole Yes 14,7
EAntenna 432LFA23 8,44 18,96 1,90 1,84 24,89 8,1 29,6 32,0 14,2 30,9 47,8 3.99:1 10,17 LFA-LOOP Yes 10,2
YU7EF EF7023B-5 8,47 18,98 1,79 1,73 24,78 6,4 30,2 30,5 19,6 21,9 48,6 1.21:1 9,99 Dipole No 10,8
RA3AQ AQ70-24f 8,52 19,22 1,87 1,82 24,82 6,1 29,0 30,0 15,1 21,0 52,0 1.13:1 10,20 Folded Dipole Yes 9,5
InnoV 24 LFA 8,89 19,32 1,92 1,87 25,25 5,9 28,0 33,4 15,3 22,1 46,4 1.19:1 10,78 LFA-LOOP Yes 8,5
*InnoV 24 LFA 8,89 19,32 1,89 1,84 25,22 5,9 27,9 33,4 15,3 22,1 46,4 1.19:1 10,76 LFA-LOOP Yes 8,4
YU7EF EF7024B-5 8,90 19,19 1,84 1,79 25,00 7,6 31,5 30,3 20,5 22,4 50,1 1.60:1 10,02 Dipole No 12,2
M2 432-9WLA 9,19 19,40 2,02 1,96 25,33 7,2 42,6 23,2 15,8 18,1 167,2 2.09:1 9,03 Folded Dipole Yes 24,0
*M2 432-9WLA 9,19 19,40 1,83 1,88 25,23 7,0 39,3 23,2 15,8 18,1 167,2 2.09:1 9,29 Folded Dipole Yes 20,5
+YU7XL QY728107D21 10,01 19,64 2,22 2,06 25,65 3,4 27,2 28,6 19,1 24,1 198,1 1.29:1 11,30 LFA 200 Yes 7,6
YU7EF EF7027B-5 10,18 19,67 1,94 1,89 25,47 7,8 32,2 25,6 20,0 23,2 50,3 1.64:1 10,39 Dipole No 12,9
Hy-Gain UB-7031DX 10,42 19,54 1,92 1,86 25,33 5,2 33,1 26,2 18,3 21,1 199,5 1.26:1 10,13 T Match Yes 13,9
WiMo 27 (YU7EF) 10,43 19,43 1,85 1,80 25,08 4,3 27,5 27,1 20,5 22,6 191,8 2.72:1 10,69 Folded Dipole Yes 7,9
+DG7YBN GTV70-30 10,49 19,74 1,94 1,89 25,58 3,9 26,0 32,9 18,9 26,0 42,5 1.276:1 11,43 Bent Dipole No 6,4
K1FO 33 10,61 20,03 2,08 2,04 25,95 6,1 31,8 22,0 15,5 22,2 200,5 1.19:1 10,93 T Match Yes 12,5
Directive DSEFO432-33 10,61 20,03 2,08 2,04 25,95 6,1 31,8 22,0 15,5 22,2 200,5 1.19:1 10,93 T Match Yes 12,5
RA3AQ AQ70-30f 11,39 20,33 2,08 2,04 26,15 5,8 28,3 30,6 16,8 22,1 51,6 1.10:1 11,63 Folded Dipole Yes 8,8
InnoV 30 LFA  11,64 20,45 2,27 2,22 26,42 6,7 30,6 36,6 13,9 20,3 49,6 2.38:1 11,56 LFA-LOOP Yes 11,2
*YU7EF EF7032-5 12,49 19,97 1,94 1,90 25,59 6,6 29,9 27,7 23,1 24,2 51,3 3.44:1 10,83 Dipole No 10,5
InnoV 33 LFA 13,03 20,85 2,32 2,29 26,81 5,3 28,8 36,6 13,3 19,2 50,1 1.17:1 12,22 LFA-LOOP Yes 9,3
DJ9BV OPT70-13wl 13,29 20,85 2,35 2,29 26,80 5,2 33,4 25,9 14,8 19,7 183,0 1.44:1 11,56 Folded Dipole Yes 14,3
M2 432-13WLA 13,29 20,81 2,32 2,28 26,69 7,2 42,1 22,4 19,2 20,9 199,9 2.35:1 10,45 Folded Dipole Yes 23,4
*M2 432-13WLA 13,29 20,81 2,08 2,08 26,40 7,8 44,3 22,4 19,2 20,9 199,9 2.35:1 9,94 Folded Dipole Yes 25,7
I0JXX 39JXX70 13,53 20,16 2,00 1,97 25,86 6,3 30,9 26,1 26,7 27,0 194,0 1.19:1 10,97 T Match Yes 11,5
InnoV 34 LFA 13,54 20,89 2,46 2,43 26,87 7,5 31,6 37,0 12,7 17,9 49,4 3.05:1 11,87 LFA-LOOP Yes 12,3
InnoV 35 LFA 14,00 20,95 2,46 2,43 26,93 7,5 31,4 36,7 12,7 18,1 49,1 2.69:1 11,96 LFA-LOOP Yes 12,1
InnoV 38 LFA 15,41 21,45 2,30 2,35 27,23 6,9 28,9 36,9 12,7 17,0 49,3 1.87:1 12,63 LFA-LOOP Yes 9,4
*InnoV 38 LFA 15,41 21,45 2,59 2,56 27,30 7,2 30,4 36,9 12,7 17,0 49,3 1.87:1 12,47 LFA-LOOP Yes 11,0
InnoV 40 LFA 16,23 21,67 2,69 2,66 27,67 7,5 29,4 37,8 12,6 17,2 48,0 2.27:1 12,99 LFA-LOOP Yes 10,0
                               
Only Antennas that have actually been built are posted in these Tables.
Legend:
1. L      = Length in Wavelengths
2. Gain  = Gain in dBi of a single antenna
3. E      = E plane (Horizontal) stacking in Meters. 
4. H      = H plane (Vertical) stacking in Meters.
5. Ga     = Gain in dBi of a 4 bay array
6. Tlos   = The internal resistance of the antenna in degrees Kelvin.
7. Ta     = The total temperature of the antenna or array in degrees Kelvin. This 
                includes all the side lobes, rear lobes and internal resistance of the 
                antenna or array.
8. F/R    = Front to Rear in dB over the rear 180 degrees of an antenna using either E or H plane. 
9. Z ohms = The natural impedence of a single antenna in free space.  
10. VSWR  = VSWR Bandwidth is based a single antenna over 432.000 - 435.000 MHz with a 
                    reference at 432.300 MHz. This parameter gives an indicator of the
                    antenna "Q" and what to expect with with stacking and wet weather.  
 
11. Ant G/T   = Figure of merit used to determine the receive capability of the antenna
                 or array. Ant G/T (dB) = Ga - 10*log(Ta). The more positive figure the 
                 better. Ant G/T is modelled in Tant.exe at 30 degrees elevation.
   Notes:
        
1. The programs used to calculate E/H Stacking,G,Ta,Tlos and G/T are
   EZNEC 5+ by Roy Lewallen W7EL,4NEC2 by Arie Voors and Tant.exe by Sinisa, YT1NT/VE3EA.  
   This combination of software provides excellent accuracy. Segment Density is
   25 segments per half wave.
2. Temperatures used: Tsky=20 degrees;Tearth=350 degrees
3. Dipole Z is measured at 432.1 MHz
4. F/R, 1st and 2nd Side Lobes (SL) have been calculated on a single antenna
5. No stacking harness losses or H frame effects are included in the 4 bay gain figures.
6. All stacking dimensions EXCEPT those marked with a "*" and "#" are
    calculated from the DL6WU stacking formula:
    D = W/(2* sin(B/2))
    Where:
    D = stacking distance,vertical or horizontal
    W = wavelength, in the same units as D
    B - beamwidth between -3dB points.
    Use vertical beamwidth for vertical stacking (as above),
    Use horizontal beamwidth for horizontal stacking.
7. Antennas marked with a "*" have stacking dimensions recommended by 
   the manufacturer or designer.
8. Antennas marked with a "#" have stacking dimensions for XPOL
   antennas by VE7BQH.
9. Antennas marked with a "+" have some or all elements over 6mm. All others
   are 4MM to 6MM.
10. FD = Folded Dipole     Single Click on the Sites with Links.
11. Manufacturer/Designer Legend:
12.  Convergence Correction: NEC2 and NEC 4 are incapable of handling complex 
      feed systems accurately like Folded Dipoles, T Matches, LFAs etc.
      Convergence Correction using the KF2YN Excel program is required. 
      See DUBUS 4/2010 "The Correction of Convergence Errors in Antenna
      Temperature Calculations by Brian Cake, KF2YN for details.
13. Manufacturer/Designer Legend:
   AF9Y = AF9Y K1FO = K1FO
   BVO = Eagle/DJ9BV K2GAL = K2GAL
  BQH = VE7BQH K5GW = Texas Towers/K5GW
   CC = Cushcraft KF2YN = KF2YN
   CC MOD = VE7BQH M2 = M²
   CD = CUE DEE  MBI = F/G8MBI/F5VHX
   CD MOD = VE7BQH OZ5HF = Vargarda
   CT1FFU = CT1FFU RA3AQ = RA3AQ
   DD0VF = DD0VF RU1AA = RU1AA
   DJ9BV = DJ9BV SHARK = SHARK (Italian)
   DJ9BV OPT = DJ9BV SM2CEW = SM2CEW/VE7BQH
   DK7ZB = DK7ZB SV = Svenska Antennspecialisten AB 
   EKM MOD = SM2EKM W1JR = VE7BQH (Mininec error)
   F9FT = F9FT WB9UWA = WB9UWA
   Flexa = FlexaYagi YU7EF = YU7EF
   G0KSC LFA = G0KSC UR5CSZ = UR5CSZ
   G4CQM = G4CQM UA9TC = UA9TC
   HG = HYGAIN Vine = G0KSC Design
   I0JXX = I0JXX YU7XL = YU7XL
   IK0BZY = IK0BZY InnoVAntennas = G0KSC
  WiMo = WiMo Tonna = F9FT
  DG7YBN = DG7YBN
Using this Chart:
Programmable Tsky and Tearth: Tsky and Tearth may be changed to meet a Stations individual characteristics.
                                                    Click on the Red number to change then click on the green to set.
While Gain is important, other factors like ease of matching and wet weather performance should be 
considered in the your decision making. Antennas with 50 ohm feed systems and good VSWR bandwidth (Q) 
may be the best choice depending on your location. Low sidelobe and F/R antennas with good (G/T) may 
provide further signifcant benefit if you have local man made noise that is in directions where these 
kinds of antennas provide additional suppression.  
Lionel H. Edwards        
                                                        VE7BQH       VE7BQH
Issue 11, Oct 2, 2017
Issue 1: Add YU7EF 32,InnoV 34 LFA,InnoV 38 LFA,InnoV 40 LFA,DG7YBN 19,KF2YN Boxkite 4,KF2YN Boxkite 4,KF2YN Boxkite 7,
Issue 1: Add KF2YN Boxkite 10,KF2YN Boxkite 13,KF2YN Boxkite 16,KF2YN Boxkite 22,WiMo 27 (YU7EF),DG7YBN 14,DG7YBN 23,
Issue 1: Add DJ9BV OPT70 8.5wl,WiMo 15 (YU7EF),InnoV 24 LFA,InnoV30 LFA,
Issue 2: Add DJ9BV OPT70 13wl,K1FO 22,K1FO 33,YU7EF 23B,DJ9BV BVO70 8.5wl,Tonna 21 DX,Konni F20,
Issue 2: Add YU7EF 27,24,21,19,18,15,14,13,12,11,10,I0JXX 30,I0JXX 25,I0JXX 16,RA3AQ 14,RA3AQ 30,RA3AQ 24,
Issue 2: Add RA3AQ 21,RA3AQ 18,InnoV 20 LFA,InnoV 19 LFA,InnoV 18 LFA,InnoV 17 LFA,InnoV 16 LFA,InnoV 10 LFA,
Issue 2: Add KF2YN Polly 15 CR,18 CR,20 CR,24 CR,InnoV 1111 LFA,12 LFA,13 LFA,15 LFA,20 LFA,23 LFA, 33 LFA,
Issue 3: Add YU7XL QY721104D14,YU7XL QY724104D17, YU7XL QY728107D21
Issue 4: Add DG7YBN Tonna 19 mod,
Issue 5: Add EAntenna 432LFA11,EAntenna 432LFA12,EAntenna 432LFA15,EAntenna 432LFA18,EAntenna 432LFA23,
Issue 6: Add Hy-Gain UB-7031DX,M2 432-13WLA,M2 432-12EME,M2 432-9WLA,
Issue 7: Add Directive DSEFO432-33,Directive DSEFO432-25,Konni F20,Directive DSEFO432-25XPOL,I0JXX 32JXX70 XPOL new ver,
Issue 8: Add BVO70-7.2 modified,DG7YBN GTV 70-11W
Issue 9: Add DG7YBN GTV70-25,DG7YBN GTV70-30
Issue 10: Programmable Tsky and Tearth,
Issue 11: Add DG7YBN GTV70-8n,DG7YBN GTV70-17 OWA



       

        - End of table -





        More theory by DG7YBN

        The VE7BQH G/T tables represent Antenna G/T (dB) found at the terminals of the sum of individual antennas shown. It is clear that in contrast the Systems G/T as S/N
        in your headphones depends on the noise temperature and gain respectively loss in all following stages and even more so on the actual environments noise intensity per
        direction in relation to beam direction and individual antenna pattern. And this closes the circle. Good S/N in your headphones starts with good Antenna G/T. Since
        what is not delivered to the antenna terminals can never be made up by any PHEMT LNA and lowest loss coax nor smartest RX S/N ratio wise. Mind that the best
        LNA betters the S/N of your RX_Line but contributes noise as function of its NF.

       

        wherein G_System holds all gains and losses in the system starting with antenna gain and down to RX all stages gain. T_Rx_Line represents the sum of Noise Temperatures
        from phasing coax lines down to RX. Further information on deriving T_ant and Antenna G/T can be found in the 'TANT Manual' and 'TANT Appendix' click .



       


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