[Boatanchors] (no subject)

[J. Forster]

A panadapter is an older name for an IF spectrum analyzer. It sweeps the IF
bandwidth and displays the signal amplitude vs frequency on a 'scope tube.
Typically, the tuned frequency of the receiver is at the center  or left edge of
the display.

For example, if the receiver is tuned to 50 MHz, with an IF bandwidth of  200
KHz
and an IF frequency of 10 MHz, the IF signals would be between 9.8 and 10.2 MHz.
The matching panadapter would scan between those limits.

They often have expansion modes which magnify the spectrum segment. In the above
example, a 2x expansion would scan from 9.9 to 10.1 MHz.

Have fun,
John

N4ue@aol.com wrote:

> Hello all, while I await the construction of my new home / shack, I have been
> wonderin' about all kinds of 'stuff'. Forgive my ignorance, but just how does
> a panaromic display work? I have several radios with IF output and I have a
> couple of 'scopes...... I just have never tried connecting them. Is there an
> interface circuit, of sorts?
>
> please help this old guy understand.
>
> thanks!
>
> ron
> N4UE
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