Icom IC-22S Transceptor
Fabricante:
Modelo:
IC-22S
Fecha:
0
Categoría:
Grupo:
Descripción:
PLL Synthesized 2-Meter Transceiver

Información

This Transceiver is extremely rugged and completely solid state. State of the art devices such as Integrated Circuits, Field Effect Transistors, Varactor and Zener diodes are engineered into a tight-knit straightforward electronic design throughout both Transmitter and Receiver. Reliability, low current demand, unexcelled performance and ease of operation are the net result. The dual conversion Receiver with its FET front end and high-Q helicalized cavity resonators boasts low noise and sensitivity of 0.4 V or less. Signal gain of 90-db or more is accomplished from the second mixer back by virtue of a 6-stage IF Amplifier. The need for additional front end RF amplification is thus eliminated. Zener-regulated PLL controlled first and crystal-controlled second local oscillators produce very good stability. Audio reproduction is of an unusually high order of distortion free clarity. The Transmitter section will produce a minimum of 10 watts RF output. Again, a phase locked loop is employed for initial frequency stability. Twenty two (22) channels are provided for operating convenience and versatility. High-Q stages provide minimum interstage spurious response. A low pass filter is placed at the output to further insure undesirable frequency products not being emitted. Final PA transistor protection circuit is incorporated in the final circuitry. A new design heat radiator is employed to increase final Amplifier reliability. All circuitry is constructed on three printed circuit boards which are easily accessible for servicing. The printed circuit boards are housed in a sturdy frame which is, in turn, housed in a rigid metal case providing an extremely durable and rugged unit. Care has been taken to filter and regulate internal DC voltages. A DC input filter is provided to eliminate alternator or generator “whine” generated in the vehicle environment. Test points are brought up from all major circuits to facilitate maintenence checks and trouble shooting should the necessity arise. Each unit comes complete with built-in speaker, a high quality dynamic microphone, mobile mounting bracket, microphone clip, DC cabling and plug, external speaker plug, and operating manual. A modern styled face plate, large S meter, small size and low profile design complete the unit’s styling. A welcome addition to a dashboard or fixed station.

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Servicio y Manual del usuario
Type manuel:
Servicio y Manual del usuario
Páginas:
31
Tamaño:
5.23 Mbytes (5485675 Bytes)
Idioma:
english
Revisión:
Manuel-ID:
Fecha:
Formato:
Documento Scaned, todo legible.
Fecha de subida:
2014 01 25
MD5:
fff37befcc102605b1e6a7e2fa99bfd6
Descargas:
1061

Información

I SPECIFICATIONS ... 1 II DESCRIPTION ... 2 ill INSTALLATION ... 3 IV CONTROL FUNCTIONS ... 7 V OPERATION ... 8 VI THEORY OF OPERATION ... 9 VII PARTS LIST ... 17 VIII VOLTAGE CHARTS ... • 21 IX BLOCK DIAGRAM ... 27

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