Manual Midland 278 DS (page 47 of 64) (English, German, French, Italian, Polish, Portuguese, Spanish)

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PORTUGUÊS

ESPECIFICAÇÕES TÉCNICAS

GERAL

Canais ................................................................(consulte a tabela de banda de frequência)

Intervalo de frequências ....................................................................26.565 - 27.99125 MHz

Ciclo de funcionamento (% em 1 hora) ............................ TX 5% - RX 5% - Em espera 90%

Controlo de frequência ..................................................................................................... PLL

Intervalo de temperatura de funcionamento ..........................................................-10°/+55°C

Tensão de entrada CC ..................................................................................12.6VCC±10%

Tamanho ......................................................................................180 (C)x35 (A)x140 (P) mm

Peso ...........................................................................................................................0,850 kg

RECEPTOR

Sistema de recepção .................................................... super-heteródino de conversão dupla

Frequência intermédia ......................................................I°IF:10.695MHz•II°IF:455KHz

Sensibilidade .................................................................................. 0,5µVpara20dBSINAD

Potência de saída de som a 10% THD ...........................................................2,0 W a 8 Ohm

Distorção de som................................................................................... inferior a 8% a 1 KHz

Rejeição de imagem .......................................................................................................65 dB

Rejeição de canal adjacente ..........................................................................................65 dB

Relação sinal/ruído .........................................................................................................45 dB

Consumo de corrente em modo de espera .................................................................250 mA

TRANSMISSOR

Potência de saída .......................................................................................................4W max

Modulação .................................................................................................AM: de 85% a 95%

.............................................................................................................FM: 1,8 KHz ± 0,2 KHz

Resposta de frequência.....................................................................................300 Hz/3 KHz

Impedânciadesaída ..........................................................................RF 50 Ohm assimétrica

Relação sinal/ruído ................................................................................................. 40 dB MIN

Consumo de corrente ........................................................................................ max 2500 mA

As especificações estão sujeitas a alteração sem aviso prévio.

Deverá ser incorporado um dispositivo de desconexão acessível na instalação eléctrica.

O dispositivo de desconexão deverá desligar simultaneamente ambos os pólos.

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Midland 278 DS Manual

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