Instead of a new Subject i again would like to tell any one that has one of these little slabs of technology laying around unused because the wife has dropped it or its been upgraded by a flatter slab for a dreadful use to face book on
I have been looking at apps for the NBTV constructor and it can make this thing useful for the first time in its existence ! apart from what i used it for before NBTV wav storage file play back
Well small is good for lack of space so its nice to find a tool that can fit in you pocket,well for a start if you have wifi you have the net thus can down load apps since i am a Cheapskate i download the free apps there tends to be a better apps if your willing to pay a few dollars but as with windows programs i go for the free ones .
What i have found so far free is a RPM meter which gos up to 30000 rpm 500hz this via the mic funny enough is crappy at low rpm but very accurate at our line frequency might have something to do with the mic ? not sure if you can record or i mean test via a input jack not sure a iphone has one ?
Theres a few frequency spectrographic software good for a frequency meter .
Theres oscilloscope apps the ones you have to pay for look better more useful than what i found for free i think some work via its mic .
lots of free signal generator software apps very handy if you need a waveform in the audio frequency range as we do quick with out making one.
Just about any thing you can think of handy for electronics in information apps
You can even copy over your News letter cd pdf files and view them on the phone.
I looked it up the iphone jack for head phones also is a input for an external mic mono only but does mean it could be used for a NBTV camera sound recorder to wav file ...that will come in handy .
Now we just need a NBTV app perhaps one day theres one sstv app so might be hope .
The electromagnetic spectrum has no theoretical limit at either end. If all the mass/energy in the Universe is considered a 'limit', then that would be the only real theoretical limit to the maximum frequency attainable.