Rules for the Technical Engineering of Cable Radio and Television Systems Article 13

Before using Channel 19(151.25MHz), the system operator should check the catalog of the sine wave generator and wave leakage detector. Also, the system operator shall indicate the instrument serial number and the proposed frequency for detecting wave leakage, then submit an application as an independent case to the central administrative authority. Channel 19 then may be put to use after qualifying the evaluation and acquiring a designated frequency from the authorities. However, the system operator may use the existing analog television program channel’s video carrier identification label method for transmitting wave detecting signals under the circumstances of: not affecting the wave leakage detector from functioning properly, having checked the relevant equipment documents of the wave leakage tester and acquiring permission from the central administrative authority to do so.A qualified sine wave generator and wave leakage detector shall be of the following standards:1. The frequency of the sine wave generated can only differ within 20Hz.2. Its harmonic waves should not jam or interfere with the original program signals.3. It should possess a labeling and label identifying function.When two or more system operators exist in one operating region, the operators should coordinate to use different frequencies for detecting wave leakage before submitting an application.When a change in the method of detecting wave leakage occurs, the system operator should re-apply to the central administrative authority as specified in Item 1.