# Can I use 1000BASE-T1 (SPEBlox) with 150m coax **URL:** \ **Category:** BotBlox Hardware\ **Tags:** speblox\ **Created:** [May 28, 2024, 3:34pm UTC](https://forum.botblox.org/t/can-i-use-1000base-t1-speblox-with-150m-coax/230 "2024-05-28T15:34:11Z")\ **Posts on this page:** 2\ **Page:** 1
**Author:** ![botblox\_admin](https://yyz1.discourse-cdn.com/flex027/user_avatar/forum.botblox.org/botblox_admin/32/1_2.png) [@botblox\_admin](https://forum.botblox.org/u/botblox_admin)\ **Post date:** [May 28, 2024, 3:34pm UTC](https://forum.botblox.org/t/can-i-use-1000base-t1-speblox-with-150m-coax/230/1 "2024-05-28T15:34:11Z")
_– Copied from customer email –_ I have a project to convert an analog pipe inspection camera to digital and I’m interested in your products, specifically the single pair ethernet device BB-SPE-F-1. The communication channel I would like to use is an existing 75 Ω coaxial cable which was previously used for analog video transmission. The present configuration is 150 meters. I’m considering using a balun (maybe I don’t even need one) with your single pair ethernet device to realize a high bandwidth ethernet communications scheme that can use a GigE vision camera with a resolution of 2MP or 5MP (60 – 120 Mbps, utilizing MJPEG compression). No power will be utilized on the communication channel, I have a power conductor set in the tether to the surface. I recognize the bandwidth will fall off quickly with distance. Does this seem like something that has a chance of working in your opinion or am I expecting too much? ---
**Author:** ![josh\_elijah](https://yyz1.discourse-cdn.com/flex027/user_avatar/forum.botblox.org/josh_elijah/32/568_2.png) [@josh\_elijah](https://forum.botblox.org/u/josh_elijah)\ **Post date:** [May 28, 2024, 3:34pm UTC](https://forum.botblox.org/t/can-i-use-1000base-t1-speblox-with-150m-coax/230/2 "2024-05-28T15:34:35Z")
150 meters is beyond what single pair ethernet can achieve right now. The practical maximum is around 20-30 meters. In addition, the signal encoding scheme is designed for unshielded twisted pair; coax would be a different ball game entirely and would probably not work well with SPE. In short, the distance you need, and the type of cable means 1000BASE-T1 will most likely not work for you.