English to Greek Tech/Engineering Telecom(munications) telecommunications

I have a problem with the term "node separation" in a text that talks about telecommunication and bandwith

I want to translate the term from english to greek
Here is the phrase with the term in it

Assuming an equivalent 1dB power penalty and a PMD fibre coefficient of 0.5ps per square root kilometre (a reasonable average for a large proportion of the more recently installed fibre), this results in an unregenerated span distance at 10Gbps of 400km, well within the normal equipment node separation for typical networks

Thank you for any help
Best regards