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Bungle · 25th August 2006, 19:02

I can see the logic and theory in that. Most remote blipper key things are ultrasonic, and in theory, the sound wave could be relayed by something like a phone. I doubt that a phone would pick up a frequency that high, as it has no need to. Likewise, the speaker on the other end probably couldn't output a higher frequency than 10 or 15khz.

Most hi-fi speakers have a maximum frequency response of 20khz, so a phone going higher is vey unlikely!

I am still quite tempted to try 'just in case'.

25th August 2006, 19:02	#6 (permalink)
Bungle Rocketship door handle Join Date: 3rd July 2006 Location: SE London/Kent Posts: 1,220 Thanks: 0 Thanked 0 Times in 0 Posts iTrader: (0)	I can see the logic and theory in that. Most remote blipper key things are ultrasonic, and in theory, the sound wave could be relayed by something like a phone. I doubt that a phone would pick up a frequency that high, as it has no need to. Likewise, the speaker on the other end probably couldn't output a higher frequency than 10 or 15khz. Most hi-fi speakers have a maximum frequency response of 20khz, so a phone going higher is vey unlikely! I am still quite tempted to try 'just in case'.