Any cell routers with external antennas?

I followed the instructions from Waveform, Port 1, 2, 3, 4 correspond to M, M1, M2, D.  I also tried the different method from Nater Tater, but it didn't work for me.  Since I don't need all the cables, I bought the antenna only (with mounting hardware) from an eBay seller. I got a good price. But that seller is out of stock and existing listings on eBay are more expensive than what I bought it for.