Coax Solutions Ltd offers a full range of in house cable assembly solutions.
Belden 1694F -RG6U type low loss serial digital coax cable. Black Flexible PVC Jacket. Stranded centre conductor Suitable for SDI, HD-SDI and UHDTV applications to 6GHz.
Belden 1694F data sheet here: Belden 1694F Data sheet.pdf
Belden Recommended transmission distance chart here: digital-video-distance-chart-24-4-2019.pdf