On Feb 27, 10:09*am, m II wrote:
wrote:
So my question is: *how long before some high-end manufacturer of
either scanner, SWL, or ham gear introduces the ability to record a
band segment and "replay" the whole segment to let you tune into any
signals in the band at will from the recording?

Has it been done yet? *If not, I wonder how long it will be.

I'm sure there are wider band recording abilities out there, but these
are affordable by mere mortals:

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the receiver can also record an entire 20 kHz wide IF spectrum, making
it possible to thoroughly analyze the received signal, and "re-receive"
the same signal again and again with different IF filter bandwidths,
notch filter, noise blanking or demodulator settings, to arrive at the
best possible reception of weak or interference-prone transmissions.

http://www.winradio.com/home/g313e.htm
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80 Khz spectrum width recording:

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*Once you have listened to and grasped the concept of taking whole
blocks of spectrum and being able to work with it, let your mind wander.
Take this block and send it elsewhere to be listened to. Have a Time
Machine in one of the remote ham stations around the world and put your
expertise in programming or Internet use to the task. Now have your Time
Machine unfolding up to 80 kHz of spectrum filled with weak signals loud
and clear on the other side of the world. Is it real, oh yes it's real
and its time is now. A solar flare is in full strength while you are at
the office. Was there a band opening? Go home and find out. Listen, I
mean really listen. What was that? It sounded like a really weak signal.
Rewind, run the audio through the DSP, now tune it again. Got it a
little better, rewind, tweak the DSP, watch it on the spectrum analyzer,
is it there? From just plain fun listening to technical analysis of
solar activity, the possibilities are endless. All you need is the
equipment and a little bit of "time".

http://www.expandedspectrumsystems.com/prod2.html
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mike

Mike - Nice Reply - Well Done ! )

you have learned well 'little grasshopper' ) ~ RHF
http://en.wikipedia.org/wiki/Kung_Fu_(TV_series)#Quotes
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