Hi, I’m looking for the recomended distance (min/max) between two Mobility 82G.
We need to have two mounted on the back of a Truck.
@Giedrius would have good insight on this I think, but in theory it should be more than one full wavelength of your lowest frequency. So if we assume 700Mhz as the likely lowest then they should be more that 43cm apart to reduce impact of RF coupling and mutual interference.
I know others on here will say as far apart as possible (ie front and rear of the vehicle) but you’ll have bigger problems with longer heavier antenna cables in that case than you will with interference…
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Thanks Martin for fast respond.This is about what I expected. In my case it is about 160cm. So I guess all good.
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Martin’s explanation was absolutely correct. You should leave a little more distance than the wavelength.
We always recommend around 50cm, especially if you are traveling in rural areas with poor network coverage like in Germany.
If you have any further questions, we can also talk on the phone.
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Martin is absolutely right.
We actually conducted isolation testing between two Mobility 82G antennas placed just 15 cm apart as there was not enough space on a vehicle. On low bands (below 1 GHz), the isolation measured around 10 dB - which isn’t terrible, but ideally, you’d want at least 20 dB.
If you can increase the distance to 40-50 cm, that would significantly improve isolation.
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