Hi,
I'm planning some changes to a site where I have in use an UHF DMR repeater (440MHz).
The main problem is the elevation difference between antenna position (6738 ft) and the road it needs to cover (2896 ft).
The Line-of-sight looks like this
What can be covered by an omni antenna looks like this :
Legend :
blue circle = antenna
green area = possible coverage
red circles/line = what needs to be covered (road / cities)
waves area = no coverage (high relief near site)
What I need to ask you guys is what would you use to achieve the best performance?
1. An omni or a dipole array?
2. If dipoles, should I get a harness or a splitter/combiner?
due to the mast size I can only mount 2 dipoles
I have available the following antennas, ready to install :
OMNI
DIPOLE
3. Can this product be used with the dipoles above?
Other details about the repeater :
RF Power : 20W
Coax : 25 ft / Andrew LDF4-50A
Thanks!
I'm planning some changes to a site where I have in use an UHF DMR repeater (440MHz).
The main problem is the elevation difference between antenna position (6738 ft) and the road it needs to cover (2896 ft).
The Line-of-sight looks like this
What can be covered by an omni antenna looks like this :
Legend :
blue circle = antenna
green area = possible coverage
red circles/line = what needs to be covered (road / cities)
waves area = no coverage (high relief near site)
What I need to ask you guys is what would you use to achieve the best performance?
1. An omni or a dipole array?
2. If dipoles, should I get a harness or a splitter/combiner?
due to the mast size I can only mount 2 dipoles
I have available the following antennas, ready to install :
OMNI
ANT450F2 – Omnidirectional Collinear Antenna 406-480 MHz - Telewave.io
Collinear Antenna Pattern: Omni-directional Effective Gain: 2.5 dBd Frequency Range: 406-480 MHz Vertical Beamwidth: 38 Degrees
www.telewave.com
3. Can this product be used with the dipoles above?
Other details about the repeater :
RF Power : 20W
Coax : 25 ft / Andrew LDF4-50A
Thanks!