ARLA/CLUSTER: RE: Signal Blocker (CB/Ham Rádio) e PLC´s compatible with radio communication....!

[João Gonçalves Costa]

Esqueci-me de referir que os erros gramaticais em português são propositados.

Ando a tentar a minha qualificação em mensagens por SMS com os jovens.....

João Costa,CT1FBF

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From: cluster-bounces  radio-amador.net [mailto:cluster-bounces  radio-amador.net] On Behalf Of João Gonçalves Costa
Sent: quinta-feira, 4 de Dezembro de 2008 19:08
To: 'Resumo Noticioso Electrónico ARLA'
Subject: ARLA/CLUSTER: Signal Blocker (CB/Ham Rádio) e PLC´s compatible with radio communication....!


Pois é Prezados colegas, estava eu a navegar na Internet e eis que me aparecem alguma "pérolas".

Afinal os utilizadores dos adaptadores Power Line também se queixam... imaginem só... das interferências provocadas pelos CB´s e Ham e vai daí, alguns respondem às suas angustias mais profundas, com o "Signal Blocker":

[http://www.hellodirect.com/hellodirect/images/large/3716-CB.jpg]

Signal Blocker (CB/Ham Radio)

 *   Eliminates CB/Ham radio interference.
 *   For radio interference, try an RFI eliminator. Identify the source of interference (AM or FM radio station...CB or ham radio), then choose the appropriate eliminator. Chain 2 or 3 together to cover all frequencies.


Ainda não percebi é como as portuguesíssimas "Tomadas LAN" podem subsistir com os "Signal Blocker" americanos na mesma instalação, bem mas isso é um pequeno pormenor técnico, sem qualquer importância.

Por fim, temos a "quadratura do circulo" que no vai sossegar a todos :

Summary: Power line communication modem for appliances control/monitoring network was developed. In order to realize robust communication by reducing influence from noise and channel distortion, the power line communication modem employs dispersed-tone technology and utilizes high frequency band for data transmission. Dispersed-tone technology gives the modem compatibility with radio communication as well as immunity from noise and channel distortion of power line. Performance of communication was measured. And compatibility with radio communication was also assessed. The results showed that the power line communication modem proposed in this paper was well qualified as a communication device for the purpose, and was compatible with radio communication.

Até à manhã.


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