A brief explanation of some satellite terms

1. Satellite communication:
Communication between two or more earth stations using artificial earth satellites as relay stations to forward radio waves.

2. Synchronous satellite communication A communication satellite that orbits the earth in a circular orbit around 36,000 kilometers above the earth's equator. Its satellite orbital period around the earth is a "stellar day", which is synchronized with the earth's rotation and is therefore It is relatively stationary, so it is also called a stationary satellite, fixed satellite or geostationary satellite, and its orbit is geosynchronous orbit (GEO).

3. TV broadcasting:
The use of radio waves or wired circuit networks to transmit live visual images in real time or broadcast after storage and editing, and broadcast them in the form of programs for the audience to watch. Dissemination of sound to the audience is broadcasting, and dissemination of images and sound is television.
The use of geostationary satellites to forward broadcast and television signals to a wide area allows users to use simple and inexpensive receivers to watch TV and listen to the radio system, which can be received by individuals or collectively.

4. Cable TV:
That is, the TV program is transmitted to the TV broadcasting system in the audience's home through the cable. It is generally composed of three parts: front end (in-station equipment), transmission system and user network.

5. Communication satellite:
Artificial earth satellites as radio communication relay stations. It relays radio signals to achieve satellite communication between satellite communication earth stations or between earth stations and spacecraft. Its space segment is satellite and measurement and control station, which can transmit telephone, telegraph, fax, data and TV information. According to its running track, it is divided into low track, medium track and static track.

6. Mobile communication:
Communicate the communication method between mobile users and fixed-point users or between mobile users. A new communication method for personal mobile users to communicate with anyone at any time and any place.

7. Satellite mobile communication:
Communication between mobile users or between mobile users and fixed users using communication satellites as relay stations. The system is generally composed of communication satellites, gateway earth stations, control centers, and mobile terminals.

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Specifications

1.Steel Processed Reel
2.In accordance with GB4004-83, JB/T7600.3-94 and DlN46395 standards

- choice of flange with or without ribs

- extra stiffeners in the drum

- painting

- hot galvanizing

- stainless steel version

- dynamic balancing



Serial Number

Specification Model
Lateral Plate Diameter D1
Major Diameter D2
Axle Hole Diameter D4
Carrying Hole Diameter D5
Center Distance E of Axle Hole and Carrying Hole
External Width L1
Internal Width L2
1
315
315
120
33.5
16
86
238
200
2
400
400
160/200
56
16
71-112
300
250
3
440
440
220
80
16-28
180
316
292
4
450
450
180/224
56
16-28
71-112
335
280
5
500
500
250
56
16-28
142
335
315
6
560
560
224/280
56
16-28
71-112
425
355
7
600
600
250/300
56/60
16-28
71-112
340/3
85
300/3
50
8
630
630
335
80
16-32
140
495
450
9
710
710
355/400
80
28-40
71-112
530
450
10
760
760
355
32.5/54
21-35
64-115
95-126.5
345
315
295
280
11
762
762
355/400
60
25-40
135
360
280
12
787
787
450
127
25.4
120
560
485
13
800
800
450
200
28-40
135
600
500
14
900
900
380
80
28-40
400
764
720
15
1000
1000
500
200
28-40
320
780
660

 


Punching Wire Spool

Punching Wire Spool, Pressed Steel Spool, Single Wall Reel, Pressed Bobbin

NINGBO BEILUN TIAOYUE MACHINE CO., LTD. , https://www.spool-manufacturer.com