Does the same apply to mini pcie-e 3g modems as to mini pci wireless radio cards - that an antenna has to be connected when the device is powered on, otherwise it may damage the radio? Or can I use the pci-e 3g modem in RB411U without antenna connected to ufl? Thanks.

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Nobody is trying out the tv screen without antenna, cause all peoples know their will be now fine picture at the screen, but with routers all peoples or going and starting to experiment with those things. Why?

Because 3g usb dongles and mobile phones do not need external antennas to operate, but I understand that a mini pci-e modem is just a radio transmitter that does not have all-inclusive features, and that it must be used with an antenna. Thanks.

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I woul like to use the RB indoors. Can I just use a simple 3dbi wifi antenna and connect it to the 3g mini pci-e? I haven't anywhere seen freq. specs of those small antennas and I don't know if I should search for a 3dbi omni 900mhz antenna.

I am asking such questions, because I tested the hardware with a 3dbi omni and a 8dbi omni. Each time there was the same signal strenght visible, as if antenna gain would not matter.

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Dobby,

With the new Delock gsm/umts sma omni there is an improvement of 4dBm to 8dBm in signal strength depending on the carrier. This confirms that even small omni's can make a difference. Thanks.