PoE Extenders

It lets a network link run further than the 100m a single copper Ethernet cable is designed for. Some units repeat the signal in line, as the Nitek EE328 does with 100m per unit; others are transmitter and receiver pairs that cover a longer run in one go, such as the Veracity VLS-LSM-B at 820m on Cat6. Most models here also carry PoE, so the far device can be powered over the same cable.

Yes. Ethernet-over-coax extenders carry network data and PoE over the coax left by an analogue CCTV system, so cameras can move to IP without new cable. The Nitek EL1543C set covers 500m of coax, the Veracity VLS-1P-CC runs 100Base-T and PoE for 1400m on RG11, and the Axis 5026-401 kit pairs an adapter at the camera with a second one at the network end.

Well past 100m: the TRENDnet TI-E100 adds 100m per unit, the Nitek EL1500C covers 500m of RG59U coax, the Veracity VLS-LSM-B reaches 820m on Cat6, and the AMG Systems AMG173-1G-1V 2000m over coax or Cat5e/6 UTP. Speed can fall as distance grows: the Comnet CLFE1EOU reaches 610m at 100Mbps but 914m at 10Mbps over UTP.

Up to 90W through the Veracity VOR-ORM-G; other stated figures include 30W PoE+ on the TRENDnet TI-E100, 60W UPoE into the TI-EU120 and 50W on the NVT Phybridge NV-FLX-04-XKIT. The power left at the far end also falls with distance: Veracity rates the VLS-LSM-CXT at 60W at 200m but 40W at 350m, so check the device draw against the figure for your run length.

Not for in-line repeaters such as the Nitek EE328, TRENDnet TI-E100 and Veracity VOR-ORL-XT, which draw their power from the PoE switch. Where the switch has no PoE, the EE328 takes an optional power supply and inserts PoE itself. Multi-channel sets differ: Comnet states that its four, eight and sixteen channel CopperLine units operate from local power, and the Nitek ER8500C receiver has an internal supply that provides PoE to the system.

An in-line repeater works on its own, while point-to-point extenders are used as a pair, with one unit at either end of the run. Kits such as the Nitek EL1551UP and NVT Phybridge NV-FLXLK-XKIT contain both ends. The Nitek ET1543C transmitter pairs with an ER8500C or ER16500C receiver bought separately, and a complete Comnet CLLFE4POEC set has a local and a remote module.

Yes, several models split one long run between devices. The Nitek ET4500C sends four IP devices over one RG59 coax for 500m, the NVT Phybridge NV-EC-04-XKIT gives four endpoints from a single coax cable, and the Dahua PFT1500 has four PoE outputs. At the head end, the Nitek ER16500C receiver takes up to 16 coax transmitters in one rack mounted unit.

Generally yes, as long as the power suits the camera. Nitek describes its Etherstretch units as transparent to the network, needing no IP or MAC address, and Veracity states that the VHW-HWPS-CBB works with any IP camera or device. A PTZ draws more power and so reaches less far: Axis rates the 5025-281 for a 25 watt PTZ at 200m, against 400m for a 5 watt camera with three units.

Yes. The TRENDnet TI-EU120 and Comelit PAC IPSWP02NA have IP67 housings, the Veracity VOR-ORL-GXT has an IP66/67 enclosure for external installation, and Nitek bundles ending -W1 add a weatherproof enclosure, such as the NEMA 4X housing of the ET1551U-W1. For street furniture, the AMG Systems AMG140-1GR is sized for confined spaces such as conduit, camera poles and roadside cabinets.

Gigabit repeaters such as the Veracity VOR-ORM-G, D-Link DPE-302GE and AMG Systems AMG140-1GR keep gigabit end to end, because they regenerate the link rather than converting it. The Nitek EE328 range and the Veracity VOR-ORL-XT are 10/100 repeaters, and the Dahua PFT1300 and PFT1500 have 10/100 PoE outputs. Long-reach and coax sets usually run at 10/100 too: the Comnet CLFE4EOC gives 10/100 Mbps and the Veracity VLS-LSM-B 100Base-TX, which suits IP cameras.