(Rosenfelt RF 20-6B-L)

In stock
RF 20-6B-L
  • Suitable for all mobile phone providers for 4G and 5G 
  • Compact signal booster for use at home and offices
  • Supplied with antennas, coaxial cables and accessories
  • Easy to install. Ready for use
  • Free of interference. CE! approved
  • Low energy consumption
  • Indoor coverage up to max. 2.000 sqm
  • Art.nr. RF 20-6B-L
  • Price excl. VAT
Customize your order (Optional)

This mobile booster kit has been specifically assembled for use at home and in spaces such as containers, cellars, garages and offices. The mobile booster is delivered ready to use and comes with all necessary accessories. The Rosenfelt RF 20-6B-L mobile booster kit receives all signal mobile network signal by using the external antenna. The signal is transmitted through the coaxial cable to the mobile booster (also known as phone amplifier or GSM repeater) which amplifies the signal and sends it through the internal antenna to your mobile phone. This booster comes with a small, practical screw-on internal antenna. The repeater has a maximum indoor coverage of approximately 1.000 m2. The Rosenfelt RF 20-6B-L guarantees an interference free signal at home or in the office.

The repeater is easy to install and comes complete with:


  • Clear instruction manual
  • External antenna (7dBi)
  • 700 / 800 / 900 / 1800 / 2100 / 2600MHz mobile booster suitable for GSM and 4G LTE / 5G Internet network
  • 10 meters coaxial cable + connectors
  • Internal antenna (5dBi)

After installing the mobile booster, you will experience straightaway how wonderful it is to have an optimal mobile signal indoors again.

1. Every internal antenna has a maximum coverage of 100 up to 300 m2, regardless of the range and power of the mobile booster.
2. You always need a splitter + extra coaxial cable when you want to install a second internal antenna.
3. Use one internal antenna per room under normal circumstances.

What should I do if I have a weak to moderate outside signal?
When assembling the sets, we have assumed that you have good mobile coverage outside your house or premises. If your mobile coverage is weak to moderate, we advise you to upgrade the outside antenna (to a higher dBi value) to guarantee good coverage. The standard antenna will then be replaced by the upgrade and will directly be added to the order amount.

More Information

Suitable for 2G/3G/4G/5G on frequencies 700 - 800 - 900 - 1800 - 2100 - 2600 MHz 

Coverage area

up to 2.000 sqm. 

Gain Up Uplink : 703 - 748MHz / 832 - 862MHz / 880 - 915MHz / 1710 - 1785MHz / 1920- 1980MHz / 2500 - 2570MHz
Gain Down Downlink : 758 - 803 MHz / 791 - 821 MHz / 925 - 960 MHz / 1805 - 1880MHz / 2110 - 2170MHz / 2620MHz - 2690 MHz
Output power 20dBm
Main Power AC 100 ~ 240 V, 50/60 Hz, DC Adapter 12V 5A
Dimensions 210 x 150 x 45 mm
Wavelength MHz 700 MHz / 800 MHz / 900 MHz / 1800 MHz / 2100 MHz / 2600 MHz