本书网址：https://kh6htv.com/ 英文原文与机翻译本。业余电视是业余无线电的图像模式之一，传输全运动图像，广义上包含所有全运动图像，狭义上为带宽较大的全运动图像，区别于窄带电视。链接: https://pan.baidu.com/s/1yNMrAXuwrJbioaL8qzhZMw?pwd=myy8 提取码: myy8 复制这段内容后打开百度网盘手机App，操作更方便哦

这个业余电视可以实现在业余段的TV图像？ HAM有朝一日自己开电视局啊😵

@"BG2GFC"#p11114 快扫描电视就是走的 PAL 和 NTSC 这两种以前的模拟电视制式，只不过国内只能在 1.2GHz 及以上的高波段玩，国内业余 U 段只有 430-440MHz 太窄装不下快扫描电视，另外也请友台们推荐一下高波段的价位适中的设备

@"BH3EUF"#p11143 我这边也查询了 1.2Ghz以上基本都是次要业务其中 24-24.5Ghz不是次要而是主要但是这波段太高了

@"BG2GFC"#p11158 次要业务倒是不要紧，因为 430-440 MHz 也是次要业务，只要别是浙江重庆，其它地区应该都可以使用 1.2GHz 及更高频的波段

@"BH3EUF"#p11161 2.4Ghz吧路由器！启动！

@"BG2GFC"#p11158 主要是这个段太贵了，目前很少有机器支持2.4g，我知道的成品机只有icom的ic-905，售价2.5w，天线都要7500元，还是用2.4g的wifi吧

Amateur TV Handbook (ATV Handbook)

BI4PYM

Book URL:https://kh6htv.com/
Original English text and machine-translated version.
Amateur television is one of the image modes for amateur radio, transmitting full-motion images. In a broad sense, it includes all full-motion images; in a narrow sense, it refers to full-motion images with wider bandwidth, distinguishing them from narrowband television.
Link: https://pan.baidu.com/s/1yNMrAXuwrJbioaL8qzhZMw?pwd=myy8 Extraction code: myy8. After copying this content, open the Baidu Netdisk mobile app for easier operation.

BG2GFC

Is it possible to achieve TV image quality during non-peak hours using this amateur television system?
One day, HAM might even start his own TV station.😵

BH3EUF

BG2GFC When scanning television, it's essentially using the older PAL and NTSC analog TV standards. However, in China, it can only operate at frequencies of 1.2 GHz or higher. The amateur U-band used domestically is too narrow (430-440 MHz) to accommodate fast scan TVs. Also, could you recommend some affordable high-frequency devices?

BG2GFC

BH3EUF I also checked on my end, and found that most systems with a clock speed of 1.2 GHz or higher are primarily used for secondary tasks.
Specifically, the 24-24.5 GHz band is not a secondary one but rather the primary one, however, this frequency range is too high.

BH3EUF

BG2GFC Secondary business is not a problem, because the 430-440 MHz band is also secondary, as long as it's not in Zhejiang or Chongqing, other regions should be able to use the 1.2 GHz and higher frequency bands.

BI1PUL

BG2GFC The main reason is that this device is too expensive. Currently, there are very few machines that support 2.4 GHz, and the only finished product I know of is the icom IC-905, which sells for 25,000 yuan. The antenna alone costs 7,500 yuan. So, it's better to use a 2.4 GHz Wi-Fi device.

BG2GFC

BH3EUF 2.4 GHz router! Power on!

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