Just posting some updates here…
PA/LNA/RF switch on board for LoRawan
And try to utilize PoE header on RPI 3 B+ 
Also updated my outdoor gateway with this version.
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big improvement ! congrats 
Great, well done - is new version with RF switch on/going up on Tindie (link?) or elsewhere? With 868Mhz version?
It will be on Tindle and files on Github later, I just sent the files to PCBA and ordering parts.
I have some parts left after dev though, so might be able to put a couple boards(<5pcs) on sell later this week.
And there will be 868Mhz version 
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New board is available on Tindie, also 868 MHz version. https://www.tindie.com/products/will123321/sx1308-raspberry-pi-lora-gateway-board/
Files on Github are also updated. https://github.com/will127534/LoRa-concentrator
Thanks @will3509111 for your open source design
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Very nice work 
Any plans on making this available on Tindie too? And what about a version with TX/RX-switch. (e.g. no power, no preamp, but transparent for TX).
Do you mean LNA board? I don’t have any plan yet though…
Gateway board or separate RF switch board?
Thanks! 
Thanks! I always think that opensource hardware is the future 
I have a LNA between my gateway and antenna, but because of that transmission in the downlink is not possible anymore. I see some improvement in reception when I use the preamp even with my short coax used in my test(-indoor)-setup. I think a (filtered) preamp near the antenna, to compensate longer coax runs, would be a good thing, but this should have a bypass option for transmitting OTAA messages.
Do you also see any improvement in reception when using your LNA? In my setup I can clearly see some specific nodes with a higher SNR. With only two nodes I receive every 10mins I don’t have any statistics… yet…
The ability to bypass LNA is quite difficult, even if I can just put only a RF switch, it still have to some how bypass LNA which is at the other end of the coex. Maybe I can do this by putting a RF Relay which turn to TX mode when no DC input from coex, and turn to LNA when there is DC power in coex. But that will definitely adding more noise to the circuit.
I think putting two antenna but able to shutdown LNA is much easier?
Since I can shutdown LNA by closing Bias-T on gateway board.
For the comparison, I did have some test with high altitude ballooning, and it doesn’t really help much with the distance, I think that might cause by the fact that LoRa is able to pickup signal under noise, which makes LNA can’t help that much, since it will raise the noise floor, reducing the sensitivity of the system.
I am quite confuse though, if LoRa can pickup signal under noise, why adding noise? But either the LoRa node chip (SX127X) and most gateway board still having LNA. Really counfused.
Some pictures for the new Gateway board!
It also breakout PoE header on the RPI 3B+ 
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to by-pass the remote LNA it is common to use two different voltage levels (or two different current levels if coax cables are too long).
For example for TX a voltage of 7-10v is needed and for RX a voltage of 10-14v is needed.
This is how the Sigfox base station works when using a remote LNA + cavity filter. And many Wi-Fi amplifiers too.
That’s some useful data!
Thanks a lot
Hi will3509111,
Are you planning on making more of the “SX1308 Raspberry Pi LoRa Gateway Board” z?
Interested 
I will!
But hoping to get some feedback though…
I have some feedback on this board. I received my order two days ago and implemented a LoraWAN gateway using the board and a Raspberry Pi 2 board. Everything works perfectly.
The Rx levels (rssi) with this board is significantly higher by about 20dBm than what was received previously from same devices on a different gateway in the same location.
The SNR on the other hand has been a bit all over the place compared to previous values, from a single channel gateway, which were more or less +/- 1 of the same value. I cannot tell why yet. Are loraserver servers able to instruct node to adjust power? Below is a screenshot of the rssi and SNR covering before and after. A marker has been placed at the point where the first transmissions were received from the new gateway.
I intend to have this installed outdoors and conduct a range test.
I’ve just received my order today. Congratulations the board looks so nice.
What software do you use to drive the gateway? I’m using RPi3B+.
I would surely modify the source and add some features but for giving it a try it would be nice.
About the RF amp you were talking. Are they required? Or do you use them to extend range?
Best regards,
Any guide on how to set it up?
Found this looking around. But I suppose it has to be integrated in a lora gateway on its own.
Here you go