ORIGINAL MESSAGE:
On Thu, 29 Nov 2007 09:20:49 -0800, "John MacFarlane"
<John.MacFarlane@metrovancouver.org> wrote:
>
>Is a piece of hardware 'better' for tuning-in a signal than doing it by
>eye on the computer screen - or relying on a software scope?
>
>
>
>How is the oscilloscope actually connected to the system to monitor the
>signal - is it a 'hard' connections? I'm a relatively new ham so please
>don't take knowledge for granted in response - many thanks 73
------------ REPLY FOLLOWS ------------
Oscilloscopes have one advantage that I know of: They respond to
tuning changes instantly, whereas software-based tuning methods have a
"lag" or "rubbery" feel to them. This is not a major disadvantage and
one can easily get used to it. I used an oscilloscope for years but to
save space I have given it up in favor of the crossed ellipses of
MMTTY and the spectrum display of RiTTY by K6STI.
To use an oscilloscope, you need a device or circuit which separates
out the two tones from your receiver and feeds one to the X input and
the other to the Y input of your scope. Some TNCs such as the KAM have
this available (with a minor modification). The KAM is what I used.
73, Bill W6WRT
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