Boards are the Heltec boards that are an ESP32/SX127x. One of the boards is using the stock antenna that came with it, the other has a TBS Immortal T I had lying around. Using the 915mhz bands as well.
I use it out in the mountains, with line of sight between hilltops, but pretty forested so it's having to punch through foliage. I did some unscientific testing around my house and did notice a lot less range, I'm suspecting there's a fair amount of noise from other things in the ISM bands in the city.