Keynote pager DTMF tones

EC-7 · Post by **EC-7** » Tue Dec 04, 2001 7:26 pm

Can I program my Two-Tone Keynote pager to alert me to a DTMF tone? For example could I set it to alert me on DTMF "1" by programing tones 697/1209? or to DTMF "27" with 697/852 or 1477/1209 or any combonation of the tones? Or will it not work because the two tones are sent at the same time. The tone could be sent for a few seconds, if needed, for the pager to respond. Is there a list of specific tones I can use, or can I enter any tone? I think this would be a great way to do a voice pager via phone link or radio without needing a two tone encoder in every radio. Thanks, Mark KC8GRQ

cracked · Post by **cracked** » Wed Dec 05, 2001 8:47 am

On 2001-12-04 22:26, EC-7 wrote:
Can I program my Two-Tone Keynote pager to alert me to a DTMF tone? For example could I set it to alert me on DTMF "1" by programing tones 697/1209? or to DTMF "27" with 697/852 or 1477/1209 or any combonation of the tones? Or will it not work because the two tones are sent at the same time. The tone could be sent for a few seconds, if needed, for the pager to respond. Is there a list of specific tones I can use, or can I enter any tone? I think this would be a great way to do a voice pager via phone link or radio without needing a two tone encoder in every radio. Thanks, Mark KC8GRQ

i would say this would not work. if you listen to what your keynote is receiving, the two tones are sent one at a time, while DTMFs are sent both at once (you seem to already know this). one thing i can think of though: on some keypads, if you hold two buttons down in the same row or column, instead of a DTMF tone, you get just the single tone for that row or column. if you have a radio that does this, you could program your pager for, say, column 1 freq and then column 2 freq, and page it by holding 1+4 and then 2+5 for example. seems that about 1 second duration per tone works, but it may depend on the paging terminal.

raymond345 · Post by **raymond345** » Fri Dec 07, 2001 2:35 am

Motorola 2 tone signal
Tone A 1 sec
150 msec breal
Tone B 3 sec timing. this is how the pager works. DTMF is a straight signal.
Now most caps can do a/b a/c a/d
etc.This is a single tone feature.

cracked · Post by **cracked** » Fri Dec 07, 2001 10:44 am

thought i might add that the duration of the second tone determines how long the pager will beep. longer tone=more beep=more time to find the pager.