User's Manual

UHF BI-DIRECTIONAL AMPLIFIER TECHNICAL MANUAL
10
Table IV: General specifications
Description Condition Min Typ. Max Unit
Operating Range and Configuration
Operable Frequency Range
● 406.0-406.1 MHz will not be included.
UBDA3845 ● 380 - 445 MHz
UBDA4551 450 - 512 MHz
1dB Nominal bandwidth centered at Fo
(MHz)
Configurable by the
external channel filters
and di
p
lexers
- 2 - MHz
Lo and Hi freq at -70dB min rejection
Configurable by the
external channel filters
and diplexers
Fo-4 - Fo+4 MHz
Bandwidth at-20dB gain loss from nominal
gain
With no filters nor
diplexers
145 155 215 MHz
Diplexer recommended insertion loss - - 2.0 dB
Channel Filter allowable Insertion Loss - 3.0 5.0 dB
Gain & ALC
Maximum Gain - 115 - - dB
Nominal Gain (at -40dBm input power) no filter nor diplexers - 73 76 dB
Input Manual Attenuation range 2dB step 0 - 30 dB
Automatic Gain Control Range Linear 35 - - dB
Output Level Manual adjustment Range 1dB step 0 - 15 dB
Output Power and Noise (diplexer loss not included)
Output P1dB (U/L and D/L) Single tone 37 38 - dBm
Output 3
r
d
Order IM Level Two-tone at +27dBm - - -16 dBm
Rated Mean Output Power
(diplexer loss not included)
Please see Notice - 32.5 - dBm
Noise Figure Room Temp - 2 4 dB
Port Impedance and Return Loss
Input / Output nominal impedance VGA and PA In/Out - 50 - ohm
Input / Output return loss 50 ohms terminations -12 - - dB
Power Supply and DC Power Consumption
AC power source voltage 50/60Hz 100 - 260 Volt
Mechanical
Dimension in mm (WxDxH) ~ 210 x 210 x 360
Operating Temperature -20 - +55
∘C
Others
Max Input Power no damage on the VGA
MSA#1 = 0dB att. +14 - - dBm
MSA #1 >= 16dB +30 - - dBm
NOTICE:
The Manufacturer’s rated output power of this equipment is for single carrier operation. For
situation when multiple carrier signals are present, the rating would have to be reduced by