الكاميرا التلفزيونية الملونة المحمولة .. كتاب التلفزيون الملون والعادي

2-8 Portable color television camera: It is small in size, light in weight, portable and transportable easily, suitable for working in photojournalism, parties, documents and commercial purposes. It operates on a continuous voltage of (12) volts via a rechargeable battery. It can work for (75 minutes): of nickel-cadmium type, of small size and weight.

The camera can also be fed with alternating current AC (110 or 220 volts), and it has a cover that protects it from shocks, moisture and dust, and inside the camera there are its circuits.
Electronic circuits consisting of transistors and integrated circuits on multiple panels that can be easily disassembled and installed. Sewn into the original board, it feeds from comb clamps with current and signal. This camera starts shooting within 5-7 seconds of turning it on. Some of its types operate within two temperatures (-20°C to +°C). Other cameras are equipped with the possibility of recording scenes directly on a special tape (VCR) without the need for additional equipment. The width of the recorded tape is 1/2 inch or 1/4 inch, and this camera has several control and adjustment keys - it is easy to operate and does not require
Great experience and skill in using it.
2-9 Portable camera with microwave transmission: This portable camera can, in addition to the process of color photography, transmit image and sound information to a nearby station by converting them into microwaves according to a system called (Minicam). In figure (22-2) a camera appears that can broadcast from a distance of (1500 meters) from the transmitting station, which makes it very suitable for working and filming in crowded or dangerous places and where it is not possible to lay transmission cables - and it works inside or outside buildings. The transmission frequency is about 2 MHz. The control signal is about 950 megahertz. This requires the presence of a transmitting antenna on the camera that has a mechanism for automatic movement within (360), and it has (13) transmission channels, which enables reception.
from (13) different television cameras in adjacent areas without their signals interfering with each other.