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Bias Tee BOX DC SMD 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
Settings
Previous versions
Product details

 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

example with Preamp Box and Bi-Dir beverage

bi-dir beverage with bias tee and preamp box qro.cz hamparts.shop

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


Settings

bias tee box dc settings jumper setting qro.cz hamparts.shop

1. Output diode limiter

- There is output diode limiter when the jumper is shorted. This RF limiter cut signals stronger than typ. 20 dBm (100 mW) @ 50 Ohm

2. Variable ATT jumper

- Variable attenuator could be switched ON. You can use it in case the preamplifier in field does have too much gain

3. Variable ATT trimmer

- This is 30 turns trimmer, you can adjust attenuation by it



Block diagram

bias tee box dc block diagram qro.cz hamparts.shop


Previous versions

   Manual for previous versions: manual

Product details

Included in package

Bias Tee DC assembled and tested

Box dimensions (mm) 100x100x50 - PU box IP56
PCB dimensions (mm) 95x95 mm
Weight brutto (kg) 0.28 to 0.33 kg

Manufacturer:

Ing. Jan Šustr
ID 05476356, VAT CZ8407024780
Palachova 1777/7, 591 01 Žďár nad Sázavou, Czech republic, Europe

General instructions:

Please also read general instructions before handling the product.

European Union Declaration of Conformity

Manufacturer Ing. Jan Šustr (QRO.cz):

ID 05476356, VAT CZ8407024780
Palachova 1777/7, 591 01 Žďár nad Sázavou, Czech republic, Europe

declares that the assembled product:

BIAS TEE BOX DC SMD

is compatible with the relevant Union harmonisation legislation directives:
EMC Directive 2014/30/EU
ČSN EN 61000-6-3 ed. 2
ČSN EN 61000-6-1 ed. 2 (333432)

On behalf of Ing. Jan Šustr (QRO.cz)
Ing. Jan Šustr, CEO
21st March 2023

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A bias tee is used to insert DC power into an HF signal to power remote antenna amplifiers or other devices.
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A bias tee is used to insert AC or DC power into an HF signal to power remote antenna preamplifiers (DC), Bi-directional beverages (AC) or other devices.
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