I recommend something other than a Raspberry Pi 3 for a multiple node set-up.   I have several instances of single and dual node installations using usbradio on INTEL ATOM processor based computers, as follows.

Intel D2500 fanless motherboard - about $60
A Mini-itx Case/Power Supply - about $50
2 gig of RAM - about $16
Samsung 16 gig SSD MMBRE16G5MSP - about $20 (used)

This makes a very capable fanless computer for about $150.00.  Yes - it's not $40.00, but it also doesn't have the machine gun effect of running usbradio on a Pi3.   I've had zero issues using these used-reclaimed SSD drives.  eBay is a good source for everything. 

Kevin W3KKC



On 2/5/2018 6:39 PM, Pierre Martel wrote:
Ok this will make the decision to buy 2 raspberry pi 3 with 4 sd card easy. 

Unless someone tell me that there is a better small computer that could do the job for my 2 nodes using usbradio. 



Le lun. 5 févr. 2018 à 18:04, Bryan Fields <Bryan@bryanfields.net> a écrit :
On 2/5/18 5:34 PM, Pierre Martel wrote:
> Yes I knew that dsp is supported on Dial but there was talk that on the
> raspberry pi it was not as stable as on x86 architecture.

I know of no one having issues running usbradio with current DIAL on the RPI3.
 I have a couple nodes running as such.

That said, I would only run one usbradio interface per RPI3, they are simply
not that powerful.  I use a supermicro Intel atom server for our main Tampa
site, and it's got 3 repeaters running pciradio and 2 usbradio interfaces on it.

--
Bryan Fields