28-08-2020, 11:11 AM
Rob
DCS tones should pass through any repeater BUT you need to also transmit the 91.5 access tone to activate the repeater itself. Most repeaters require the control tone to open but do not re-transmit them.
It may seem a bit complicated but if your existing radio does not allow concurrent transmission of both signalling methods (however unlikely) then a work-around might be to..
(1) use an external 91.5 CTCSS module and inject that into your audio and set up the radio for DCS;
(2) transmit 91.5 plus a much higher CTCSS control tone that your brother's radio can decode on. The issue with #2 is that the repeater's receive audio bandpass may filter out the whole of the CTCSS tone range so it will not be re-transmitted. You wouldn't know until you tried it.
At this point you probably need to read your user manual to see what your radio can do : CTCSS, DCS or CTCSS plus DCS..
One point you need to consider : the repeater is an open use facility and the LCD/Regs say you must listen before you transmit so as to avoid interference to other repeater users. If you use DCS for squelch control 100% of the time then you won't hear other users and that is a big issue. You may become a significant target for the repeater owners.
73 Doug VK4ADC
DCS tones should pass through any repeater BUT you need to also transmit the 91.5 access tone to activate the repeater itself. Most repeaters require the control tone to open but do not re-transmit them.
It may seem a bit complicated but if your existing radio does not allow concurrent transmission of both signalling methods (however unlikely) then a work-around might be to..
(1) use an external 91.5 CTCSS module and inject that into your audio and set up the radio for DCS;
(2) transmit 91.5 plus a much higher CTCSS control tone that your brother's radio can decode on. The issue with #2 is that the repeater's receive audio bandpass may filter out the whole of the CTCSS tone range so it will not be re-transmitted. You wouldn't know until you tried it.
At this point you probably need to read your user manual to see what your radio can do : CTCSS, DCS or CTCSS plus DCS..
One point you need to consider : the repeater is an open use facility and the LCD/Regs say you must listen before you transmit so as to avoid interference to other repeater users. If you use DCS for squelch control 100% of the time then you won't hear other users and that is a big issue. You may become a significant target for the repeater owners.
73 Doug VK4ADC
Doug VK4ADC @ QG62LG51
http://www.vk4adc.com
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If you have a comment or question, post it as it may trigger or answer the query in someone else's mind.
http://www.vk4adc.com
This Forum is only going to be as interesting as the posts it contains.
If you have a comment or question, post it as it may trigger or answer the query in someone else's mind.