Devolo dLan AVplus
Now with mains power pass-through socketry
Review It has taken Devolo a while to come up with a set of powerline Ethernet adaptors with pass-through power sockets in them, but here, at last, they are.
Devolo's dLan AVplus: powerline with pass-through power
The dLan 200 AVplus is essentially Devolo's dLan 200 AVeasy adaptor stretched to accommodate the power socket that's placed diametrically opposite the device's own power pins. The pins and socket are placed in the upper half of the adaptor, and the 10/100Mb/s Ethernet port is on the bottom of the unit.
The adaptor's value to you will depend, then, not only on whether you need that 'extra' power socket but also whether there's room for the 130mm top-to-bottom device to be plugged in. It's 65mm wide and 40mm front to back. Our test bench main sockets, for example, are placed too close to the top of the bench, so we couldn't plug the Devolos in there.
And don't forget that you'll need to allow 5cm or so below the adaptor to ensure there's sufficient room to plug an Ethernet cable in.
Assuming space is no problem, you're ready to use the AVplus adaptors. They're standard HomePlug AV units, so that's 200Mb/s maximum throughput, though this is way above what you'll get in real-world usage - hence the 100Mb/s Ethernet port.
Bundled software lets you keep track of your powerline links
Like the AVeasy, the AVplus has a small button next to the Ethernet socket that can be used to automatically generate a 128-bit AES encryption key for adaptors on the network. Push and hold the button for more than a second on one adaptor and a new, random key is generated. You now have two minutes to press the button on each of the other adaptors - again, for at least a second - for them to share the key.
You should have done what he will do to you should you interfere with his legal kit. (Something yours will NEVER be!) and that is report it to OFCOM. When they finally stir they will make you "neutralise" your kit so as it no longer bothers LECAL radio users. 73 de Gary
I am a radio amateur and thus far I am not plagued by interference from these infernal interference devices.
There are a lot of misconceptions bandied about about the amateur radio fraternity and the interference that WE cause.
We are a licenced service and have to ensure that our equipment meets emc and other regulations and that we do not cause interference to other users of the spectrum. If we do, we can be REQUIRED to close down our station and could lose our licence. If computer buffs had to undergo the same examinations and training re: the nature and propogation of radio waves, they, or at least the responsible ones, would not condone the use of plt devices.
Plt devices have been subjected to independent tests which have shown that, despite carrying a CE stamp they DO cause interference in the order of 1000 times the permitted levels. The Comtrend ones issued with BT Vision are the worst but none are 'clean'. To say they are notched around the amateur bands is a bit like saying that providing that I notch my transmitter so that I only interfere with BBC2 and Channel 5, that would be OK as they are minority interest channels. The very existence of any notching is an ADMISSION of GUILT and that they DO cause interference, that alone should be enough to get these devices withdrawn from the marketplace (if only until they have been tested and made to conform to the legislation, which I fear is actually impossible). The only effective 'notch' for these devices is one covering the WHOLE of the HF spectrum from 0-30MHz.
Alan - G0BXU
A technology of convenience
PLAs including these Develos are a flawed technology of convenience causing users of the HF spectrum intentional and illegal spectrum abuse and interference, for it's a fact injecting these signals into house mains wiring will cause the hash to be radiated over long distances.
As a legal user of the HF spectrum I will fight the use of these devices , many of which do not adhere to the EMC regulations laid down, by a considerable factor. Putting a non radiating distribution system in any property is possible, even your stone walled cottages. How do you think you get your mains and telephone systems into any house in the first place? But of course it’s just easier to use a technology of convenience regardless of the interference to others, isn’t it.
It’s about time users of PLAs understood and accepted the interference they cause to legal users of our short wave spectrum.