stickpin
New Member
Right suppose i have a main transmitter (rig) remotely linked with STl to get the audio to it Either band 1, 3, or x band)
I need to remotely switch the rig on and off. This is what i have though of doing.
Using a DTMF receiver chip to trigger an electronic latch which will then hold the relay to switch my rig. (i.e. one pulse from the DTMF receiver rig goes on. Another pulse from DTMF receiver rig goes off toggling the latch and therefor the relay). Ok thats fine and will most probably work but...
What are the chances of whilte noise or audio/speech/music accidently triggering the remote latch circuit? example i could use 697 Hz and 1209 Hz sent down the audio link to toggle the relay/switch rig on/off. obviously having some DTMF generator sent down the audio link.
Would this be an acceptable way of doing it?
Hope someone can help with this one or maybe suggest an alternative.
I need to remotely switch the rig on and off. This is what i have though of doing.
Using a DTMF receiver chip to trigger an electronic latch which will then hold the relay to switch my rig. (i.e. one pulse from the DTMF receiver rig goes on. Another pulse from DTMF receiver rig goes off toggling the latch and therefor the relay). Ok thats fine and will most probably work but...
What are the chances of whilte noise or audio/speech/music accidently triggering the remote latch circuit? example i could use 697 Hz and 1209 Hz sent down the audio link to toggle the relay/switch rig on/off. obviously having some DTMF generator sent down the audio link.
Would this be an acceptable way of doing it?
Hope someone can help with this one or maybe suggest an alternative.