[UK-CONTEST] PLT??

[Andy swiffin]

>>> "Les Elliott" <g4ogb at tiscali.co.uk> wrote on 23/02/2006 08:56:51:
> Is this a back door approach??
> Take a look on dabs.com under 'Networking & Communication'
> Easier home networking with devolo dlan - over your electricity mains.


>From the Devolo website http://www.devolo.co.uk/uk_EN/button/dlanfaq.html :

Question:
On which level do the dLAN adapters transmit? 

Answer:
The transmitting power spectrum is -50dBm/Hz, on amateur radio frequences -80dbm/Hz, with a bandwidth of about 17MHz is that about +22dBm (160mW) or about -8dBm (160µW) (all values based on 50 Ohm.) As the coupling is symmetrical, only a small part of this performance is radiated

Question:
Is there a risk that electromagnetic interferences distribute all-over in the house using dLAN adapters? Or even to the neighbours?

Answer:
dLAN devices are tested according to the same norms like other electric devices (EN55022), the devices generate the same noise level than other electrical equipment. So that, dLAN devices don't produce more interference than a power drill, e.g.

Question:
On which frequences does dLAN operate? Does this technology interfere the reception of radio or amateur radio?

Answer:
Typically today radio reception take place on UKW in the range of 87,20 to 108,00 MHz. The frequences used by dLAN-technology are in the range of 4MHz to 21MHz and so they cannot interfere your UKW radio. The technology is based on the HomePlug standard, in which the transmitting level is specially lowered in the amateur radio band. The used transmitting level is very small and by the symmetrical coupling, only a small part of this power will be radiated by the power grid. Consequently in the amateur band are none interferences awaited. .


As they say round here:  Aye - that'll be right.....

Andy
gm8oeg

(p.s. nice translation on the web site, reminds me of reading late '70s japanese radio manuals..  So we look foreward to finding that  "in the amateur band are none interferences awaited".)