HD Signal Repeater Leave a Comment / Uncategorized / By admin For more information check out protectionbay.com The IntelliSpy HD-SDI Signal Repeater with allow you to run HD signal thru coax over 600 feet. Normally without the repeater you can only run the cable a little over 300 feet. The repeater is great for larger installations. $106.00 For more information check out protectionbay.com