• Public Gallery  • Help  
• Join Now!  • Log In  • Feature Tour
 holl_ands | Home > Multi-Bay Bowtie Antennas > UHF 4-Bay Bowties with Reflector > 
M4 (9.5x9.0) + 40x34 FLAT Refl at 5-in
M4 (9.5x9.0) Super-4-Bay Bowtie (all AWG10) with 40-in H x 34-in W FLAT Screen Grid
(1x2-in) at Various Reflector-To-Bowtie Separations analyzed using 4nec2.
[In previous analysis, 40x34-in Reflector was found to be the "Best" size.]

"Best" UHF Performance is at Separation = 5.0-in, with acceptable SWR Under 2.7
[Max Criteria for low Mis-Match and EVM Loss] with F/B & F/R Ratios over 20 dB.

UHF Raw Gain = 13.3 to 14.9 dBi, F/B & F/R Ratio Min = 19.8 dB and SWR (300-ohms) under 2.7.
Hi-VHF Raw Gain = 8.7 to 8.9 dBi, F/B & F/R = 10 to 16 dB and SWR (300-ohms) = 4.1 to 14.1.
Date(s): 7 Nov 2013. Album by holl_ands. 1 - 22 of 22 Total. 8769 Visits.
Start SlideshowTo order prints and photo-products: 1. Select photos. 2. Click Order. 3. Select products.Select images and click to download to your computer 
Enlarge photo 1
enlarge 204KB, 730x1024
1
M4 (9.5x9.0) + FLAT 40x34 Refl at 5-in
3D View


Enlarge photo 2
enlarge 319KB, 870x1024
2
M4 (9.5x9.0) + FLAT 40x34 Refl at 5-in
Front View
[1 large square = 5 inches]


Enlarge photo 3
enlarge 97KB, 311x1024
3
M4 (9.5x9.0) + FLAT 40x34 Refl at 5-in
Top View
[1 large square = 2.5 inches]


Enlarge photo 4
enlarge 175KB, 1152x691
4
M4 (9.5x9.0) + FLAT 40x34 Refl at 5-in
UHF Raw Gain = 13.3 to 14.9 dBi
UHF F/B & F/R Ratio Min = 19.8 dB


Enlarge photo 5
enlarge 192KB, 1152x691
5
M4 (9.5x9.0) + FLAT 40x34 Refl at 5-in
UHF SWR (300-ohms) Under 2.7


Enlarge photo 6
enlarge 243KB, 1152x691
6
M4 (9.5x9.0) + FLAT 40x34 Refl at 5-in
UHF Impedance


Enlarge photo 7
enlarge 302KB, 1024x1024
7
M4 (9.5x9.0) + FLAT 40x34 Refl at 5-in
Azimuthal Pattern at 470 MHz


Enlarge photo 8
enlarge 300KB, 1024x1024
8
M4 (9.5x9.0) + FLAT 40x34 Refl at 5-in
Azimuthal Pattern at 530 MHz


Enlarge photo 9
enlarge 301KB, 1024x1024
9
M4 (9.5x9.0) + FLAT 40x34 Refl at 5-in
Azimuthal Pattern at 590 MHz


Enlarge photo 10
enlarge 302KB, 1024x1024
10
M4 (9.5x9.0) + FLAT 40x34 Refl at 5-in
Azimuthal Pattern at 650 MHz


Enlarge photo 11
enlarge 304KB, 1024x1024
11
M4 (9.5x9.0) + FLAT 40x34 Refl at 5-in
Azimuthal Pattern at 698 MHz


Enlarge photo 12
enlarge 305KB, 1024x1024
12
M4 (9.5x9.0) + FLAT 40x34 Refl at 5-in
Azimuthal Pattern at 758 MHz


Enlarge photo 13
enlarge 301KB, 1024x1024
13
M4 (9.5x9.0) + FLAT 40x34 Refl at 5-in
Azimuthal Pattern at 806 MHz


Enlarge Microsoft Word Document 14
enlarge 134KB, 791x1024
DOC14
M4 (9.5x9.0) + FLAT 40x34 Refl at 5-in
4nec2 File


Enlarge photo 15
enlarge 94KB, 386x1024
15
M4 (9.5x9.0) + FLAT 40x34 Refl at 5-in
Side View
[1 large square = 5 inches]


Enlarge photo 16
enlarge 164KB, 1152x691
16
M4 (9.5x9.0) + FLAT 40x34 Refl at 5-in
Hi-VHF Raw Gain = 8.7 to 8.9 dBi
Hi-VHF F/B & F/R = 10 to 16 dB


Enlarge photo 17
enlarge 219KB, 1152x691
17
M4 (9.5x9.0) + FLAT 40x34 Refl at 5-in
Hi-VHF SWR (300-ohms) = 4.1 to 14.1


Enlarge photo 18
enlarge 250KB, 1152x691
18
M4 (9.5x9.0) + FLAT 40x34 Refl at 5-in
Hi-VHF Impedance


Enlarge photo 19
enlarge 304KB, 1024x1024
19
M4 (9.5x9.0) + FLAT 40x34 Refl at 5-in
Azimuthal Pattern at 174 MHz


Enlarge photo 20
enlarge 304KB, 1024x1024
20
M4 (9.5x9.0) + FLAT 40x34 Refl at 5-in
Azimuthal Pattern at 198 MHz


Enlarge photo 21
enlarge 308KB, 1024x1024
21
M4 (9.5x9.0) + FLAT 40x34 Refl at 5-in
Azimuthal Pattern at 216 MHz


Enlarge photo 22
enlarge 220KB, 1024x696
22
M4 (9.5x9.0) + FLAT 40x34 Refl
UHF Raw Gain for Refl-Bowtie Separations
which provide POOR Performance


 
 Select All.  
  Sign the Guestbook. There are no entries.