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Bias Tee BOX DC manual

A bias tee is used to insert DC power into an HF signal to power remote antenna amplifiers or other devices. It is usually positioned at the receiving end of the coaxial cable to pass DC power from an external source to the coaxial cable running to powered device. A bias tee consists of a feed inductor to deliver DC to a connector on the device side and a blocking capacitor to keep DC from passing through to the receiver. Bias tees are used in a variety of applications, but are generally used to provide an RF signal and (DC) power to a remote device where running two separate cables would not be advantageous.



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Applications
Schematic
PCB
Settings
KIT Assembling
Part list


 bias tee box dc qro.cz hamparts.shop


Applications

- Providing an RF signal and (DC) power to a remote device over one coax
- You can use bias tee on both sides as DC IN and OUT from RF coax

- Great for RX preamp BOX



version with PL SO-239 connectors

bias tee box dc pl so-239 qro.cz hamparts.shop



version with F connectors

bias tee box dc f qro.cz hamparts.shop


Schematic

bias tee box dc schematic v01 qro.cz hamparts.shop


PCB

bias tee box dc board v01 qro.cz hamparts.shop


Settings

Variable Attenuator

bias tee box dc attenuator v01 qro.cz hamparts.shop

RF protection

bias tee box dc protection v01 qro.cz hamparts.shop


KIT Assembling

version with PL SO-239 connectors

bias tee box dc pl so-239 kit qro.cz hamparts.shop



version with F connectors

bias tee box dc f kit qro.cz hamparts.shop



pcb after assembling all the parts

bias tee box dc assembled pcb qro.cz hamparts.shop


Part list

NAMEPARTVALUE
GL1, GL2 neon lamp lamp 65V AC
D1 - D6 diode 1N4007
C1 - C8 capacitor 100nF 100V
C9 capacitor 100uF
PTC1 PTC fuse THT 500mA
PTC2, PTC3 PTC fuse THT 100mA
R1 resistor THT 1K
R2 resistor THT 150R
LED1 LED diode 3 mm
ATT trimmer 200Ohm
L1, L4 inductor 100uH
CMCC inductor 5mH
VAR1 varistor 26VDC
X1 wago 2-pole wago
CON connectors PL SO-239 or F

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