Presumably the sell that embedded computer for purposes other than LoRa/LoRaWAN
What do-it-yourself (mpcie) concentrator would you reccomend?
waiting for a sx1302 based mpcie board? like: https://www.cnx-software.com/2019/10/16/semtech-sx1302-lora-transceiver-to-deliver-cheaper-more-efficient-gateways/
Your issue isnât the concentrator, but the host.
Either get a host with SPI, or get a pico GW concentrator
Ok, but itâs confusing when they sell it for exactly that purpose, itâs even called: " LoRaWAN⢠Gateway Concentrator Module"
I thought you were asking about the embedded PC chassis.
The FT2232 USB based LoRa Concentrators are obsolete configurations sustained by demand of customers uninformed enough to buy something better like the SPI configuration, or if they must use USB, the pico GW design that Semtech engineered precisely to solve that problem.
Do you know a SBC host which does support this non standard spi use in mpcie formfactor?
I wasnât clear
SPI yes, my question on picking one was ruled off topic but pretty much any ARM embedded Linux board would, as would the MIPS based router chips.
in that form factor, no, because there is no standard Thatâs why people make adapter boards
Iâll stay away from mpcie 
with a raspberry pi (with some in memory filesystems to spare the sd card)
Hardly a good choice - youâre still at the mercy of an unknown flash translation layer. The pi is a consumer toy, it was never engineered to be an embedded system. The SoC could be used in one, but the pi foundation canât be bothered to bring out the necessary strapping pins to use alternate storage technology, because they see their mission as building a consumer toy, not an embedded board for serious usage.
They made that in the form of the compute module which is targeted at exactly that market. Available with eMMC.
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Hi there, I can see that you are using 2245 with rasp pi 3 model b+, is it work nice? are you satisfied with this product? Thank you in advance
Hi @Ivan992 @Borroz is no longer active on the forum so to avoid you getting frustrated waiting I guess we need to open up your question to others with experience and willing to comentâŚAnyone?
Hello Jeff, thank you for understanding me, I really have problem buying some development kit to build lora wan network, mostly people recommend me already assambled gateways or some arduino based, but I need Raspberry Pi 3 model b or b+ with some, the hard part is to choose concentrator board, a guy cslorabox told me advantages and disadvantages for 2245 RAK Pi HAT and recommended me two other chipâs but as I lack some knoledge about that topic it is really hard to to choose right affordable concentrator board. Thank you in advance.
Actually I gave you the part numbers of the Semtech chips used in all real concentrators, including the 2245
You are getting advise from experienced people already, why do you keep asking the same question over and over?
For a quick solution buy either the RAK concentrator board with a hat for the
RPi or find an equivalent Dragino board and order that.