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DECT-Antenna-Obscurities 7590 AX

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FRITZ!Box 7590 AX v2-Image116.jpg
DECT antenna 1 routing 7590ax v2
FRITZ!Box 7590 AX v2-Image100.jpg
DECT antenna 1 / 3 selector 7590ax v2

DECT-Antenna-Obscurities 7590 AX[edit]

Obscurities found in the FRITZ!Box 7590 AX [v1] and FRITZ!Box 7590 AX v2 DECT antenna layouts.

The circuits of the first generation DECT models 7150 and w500v supported a single DECT antenna.
The circuits of all later DECT models support 2 antenna outputs.

The FRITZ!Box 7590 AX [v1] and FRITZ!Box 7590 AX v2 use thse same PCB with 3 DECT antennas:


3 antennas for 2 DECT circuit outputs, that's obscure.
Normally it is no good idea to connect 2 different antennas to one output in parallel.


The solution is only 2 of the antennas are connected. Antenna 2 is always connected to the first output.
A little SMD part near the second output can be assembled in 2 directions as a selector between antenna 1 and antenna 3.

  • If it is assembled in 2 o'clock direction it connects antenna 1, which is used in the probe.
  • If it is assembled in 5 o'clock direction it connects antenna 3, which would be an option.

The 7590 [AC] uses the same 3 antennas, but no selector, see the DECT-Antenna-Obscurities 7590 article.


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See also[edit]