[Lowfer] Spectran question

[William E. Isakson]

John, this answer is not specific to Spectran but my intuition says it
might relate.  Computers do not hear as well at 700 hz (normal CW) but like
the frequency somewhat higher.  So the 3500 line is probably a good choice
for putting the signal to be received and then you have the known 3500 hz
number to relate back to the actual signal frequency by subtraction from
your VFO readout.
Bill AC6QV

--------


Bill Isakson     AC6QV
Roseburg, Oregon USA
bill.isakson at gmail.com

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On Fri, Apr 4, 2014 at 10:05 AM, John Bruce McCreath
<weazle at hurontel.on.ca>wrote:

> With Spectran setup selected to the preset NDB mode (0 to 7400 Hz.) As
> soon as I press
> the start button, a red vertical line appears in the upper spectrum
> display at 3500 Hz.
> What is it and is there any way to turn it of?  Thanks in advance for any
> replies.
>
> 73, J.B., VE3EAR
>
> LowFER Beacon "EAR"
> 188.830 kHz. QRSS30
> EN93dr
>
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