Bosch Building Technologies

    cancel
    Showing results for 
    Search instead for 
    Did you mean: 

    When I transmit on one line I hear my communications on another line.

    Question

    How can I mute my transmit audio coming back as receive on another line?

     

    Answer

    In some radio systems, when several RF channels are the same to each other in frequency, transmitting on one channel can cause others to break squelch and make noise. Although this is in reality likely an RF problem that is best dealt with by addressing the root causes—antenna proximity, orientation, and TX power output levels, etc., Telex C-Soft can help mask these symptoms by providing audio RX blocks for selected adjacent channel lines. RX blocks programmed into C-Soft will automatically mute the lines selected in the list during console transmit. (Other Telex "hard" consoles also have this feature.)

    For example, if Line 1, a VHF channel is randomly causing three other nearby VHF channels, Line 2, Line 3 and Line 4 to unsquelch during transmit, RX block should be programmed for those channels as shown in Figure 1.

    This screen is found in Edit/Set up per line parameters/Frequency.

    Note: per-line mute buttons must be present in the design for RX Block to work.
    rx delay 1.jpg
    Figure 1


    RX Block delay time

    RX Block delay, found in Edit/Global parameters/Audio, sets the amount of time in milliseconds, that the muting time is continued after console ptt stops.  This can be useful for masking repeater squelch tails and network latency of parallel line RX traffic, see Figure 2.

     rx delay 2.jpg
    Figure 2
     
     
     
     
     
     
     
     
     

    © Copyright Bosch Security Systems

    All rights reserved. Text, images, graphics, sound, animations and videos as well as the arrangement of the same in Bosch offline knowledgebase (help file) are protected by copyright and other intellectual property rights. The content of these offline knowledgebase may not be copied, disseminated, altered or made accessible to third parties for commercial purposes. Some Bosch web sites may also contain text, images, graphics, sound, animations and videos subject to third party copyrights.

    Warranty Note

    This information is provided by Bosch Security Systems ''AS IS'' and without warranty of any kind, expressed or implied, including (but not limited to) any implied warranties of merchantability, fitness for any particular purpose or non-infringement. While the information provided in believed to be accurate, it may include errors or inaccuracies. Bosch Security Systems will not be liable for any damages of any kind arising from use of this tool, including, but not limited to, direct, indirect, incidental, punitive and consequential damages.

     

    Version history
    Last update:
    ‎04-08-2020 07:59 PM
    Updated by:
    Labels (4)
    Contributors
    Icon--AD-black-48x48Icon--address-consumer-data-black-48x48Icon--appointment-black-48x48Icon--back-left-black-48x48Icon--calendar-black-48x48Icon--center-alignedIcon--Checkbox-checkIcon--clock-black-48x48Icon--close-black-48x48Icon--compare-black-48x48Icon--confirmation-black-48x48Icon--dealer-details-black-48x48Icon--delete-black-48x48Icon--delivery-black-48x48Icon--down-black-48x48Icon--download-black-48x48Ic-OverlayAlertIcon--externallink-black-48x48Icon-Filledforward-right_adjustedIcon--grid-view-black-48x48IC_gd_Check-Circle170821_Icons_Community170823_Bosch_Icons170823_Bosch_Icons170821_Icons_CommunityIC-logout170821_Icons_Community170825_Bosch_Icons170821_Icons_CommunityIC-shopping-cart2170821_Icons_CommunityIC-upIC_UserIcon--imageIcon--info-i-black-48x48Icon--left-alignedIcon--Less-minimize-black-48x48Icon-FilledIcon--List-Check-grennIcon--List-Check-blackIcon--List-Cross-blackIcon--list-view-mobile-black-48x48Icon--list-view-black-48x48Icon--More-Maximize-black-48x48Icon--my-product-black-48x48Icon--newsletter-black-48x48Icon--payment-black-48x48Icon--print-black-48x48Icon--promotion-black-48x48Icon--registration-black-48x48Icon--Reset-black-48x48Icon--right-alignedshare-circle1Icon--share-black-48x48Icon--shopping-bag-black-48x48Icon-shopping-cartIcon--start-play-black-48x48Icon--store-locator-black-48x48Ic-OverlayAlertIcon--summary-black-48x48tumblrIcon-FilledvineIc-OverlayAlertwhishlist