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Zyxel NR5103E ports , which does what?

What I posted most recently above is the mapping of the NR5103E.
And what I first replied with is the configuration I use with the Epoynt-2 which has it's own antenna labelling.
 
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reading this with interest.
I have the EE 5g smart hub, the Zyxel NR5103, connected to a Poynting expol-2-5g-v3. because it was 2x2 mimo I decided to buy another to see if I could improve it. looking at this if the connectors are set up like :
CON4/main1 (top) - 4G Primary
CON3 - 5G Diversity
CON2/main2 - 5G Primary
CON1 (bot) - 4G Diversity

then is it fair to say that CON 3 and CON 2 will only pick up the bands n78 - 3500Mhz, n28 - 700Mhz, n1 - 2100Mhz, n3 - 1800Mhz and n7 - 2600Mhz?

the problem I now have is that none of them bands are available in my area (LL54 5TW) :'-D

according to the EE map 5G is available about 1/2 a mile away but, as explained by essexboy elsewhere to me, this may be good 4G. cell mapper doesnt show any towers broadcasting the 5G frequencies anywhere.

i've bought an antenna that i can't use i think!!!

i am new to all this and find it baffling!!! all to keep the kids in tok tik!!!!
 
Additionally it appears these are the port mapping with the help of Seán again. Note this is with wiring directly to the internal antennas instead of the external but there is PCB traces maybe they are similar.

This is by far the best working combo I had from all the testing I did.

Con1 - 4G Diversity
Con2 - 5G Primary
Con3 - 5G Diversity
Con4 - 4G Primary



ZvSfHPi.jpeg

I think I have an explanation for why this is the case, although the internal ports label the connections as

4 Main1
3 Div1
2 Main2
1 Div2

If you are using a wideband antenna it is likely this is CORRECT however by moving the connections and using the div from 1 pair of x-pol antennas for the other main you provide separation of the elements which improves the overall signal.

See below

Seperartion.png
 
Last edited:
I have a Zyxel nr5103e connecting to two kaser lpda 5 g lte mimo antena 3 mast is 1.5 miles line of sight getting varying speeds as i only have two cables would i need to buy a further two antennas
 
I have a Zyxel nr5103e connecting to two kaser lpda 5 g lte mimo antena 3 mast is 1.5 miles line of sight getting varying speeds as i only have two cables would i need to buy a further two antennas
You don't HAVE to have two more antennas. I ran two Iskra P-62 LPDAs on my 5103E for a couple of months without any issues. You just won't get the full capability of the routers throughput.. which very much depend on MAST and signal conditions anyway.
 
Hi all,
I got this reply from Zyxel over on their forums:
If we name the top antenna port as port 1, and the bottom antenna port as port 4, then port 1 is for frequency lower than 2.7 GHz, while port 3 is for C-bands. It means that port 1 is for most of LTE bands while port 3 is for main NR bands (n77, n78). On the other hand, port 2 and port 4 are receiving end for MIMO.
I asked some followup questions about frequencies.
Cheers :)
 
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Hi all,
I got this reply from Zyxel over on their forums:

I asked some followup questions about frequencies.
Cheers :)

if that's true then how can the modem possibly undertake 4x4 MIMO? if the above was true surely that would mean it was only capable of 2x2 MIMO on LTE. Unless 4X4 MIMO is classified as using LTE + 5G or 2x 5G high bands and 2x 5G Low Bands.

Also if you look at the internal PCB antennas each of the four have exactly the same design/board layout with multiple antennas (for multiple bands) within each.
 
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