[Lowfer] Post Capture Processing (was: XSR in CT)

Fri, 25 Oct 2002 08:40:21 -0400

Thanks, Bill.

I might also mention to the other Mike (WE) that the computers used to drive
the HPIB bus are still around. They are programmed in BASIC and it is very
easy to program them to collect data. This, of course, all assumes that
Mike's RX has the HPIB (IEE-488) interface)

Mike
wa1ptc

-----Original Message-----
From: [email protected]
[mailto:[email protected]]On Behalf Of Bill Farmer
Sent: Friday, October 25, 2002 7:59 AM
To: [email protected]
Subject: Re: [Lowfer] Post Capture Processing (was: XSR in CT)

Mike,

    Another (and easier) way to control the HP-3586C is with an
RS-232-to-GPIB
external interface.  You can find them on eBay designated GPIB-232C-A  There
is
extensive documentation for it on the National Instruments website and I
find it
much easier to use than the GPIB XT card.  Eats up a serial port but not a
card
slot ...

Bill Farmer W3CSW
Rockville, MD.

Mike Staines wrote:

> >> Could it be made to run my HP 3586C???
>
> Don't know. If the HP has a serial port to accept commands then it could.
> Also, I saw an HPIB XT card on e-bay once. That would be fun to use for
data
> acquisition from the HP if it has the HPIB interface.
>
> And thanks for mentioning the rotor! In fact, I do have a
> computer-controllable rotor from my Oscar days. Gotta get that in the mix.
> Looks like I need to get more serial ports...  8-)
>
> Mike
>
> -----Original Message-----
> From: [email protected]
> [mailto:[email protected]]On Behalf Of WE0H
> Sent: Thursday, October 24, 2002 10:08 PM
> To: [email protected]
> Subject: RE: [Lowfer] Post Capture Processing (was: XSR in CT)
>
> It sounds like the computer will run the VFO and rotate the loop and do a
> capture and fire up the little zapper that lets you know in the middle of
> the night that it has seen a signal. You'll have to ignore the Looper Band
> so you can get some sleep though!!! That sounds like a neat program. Could
> it be made to run my HP 3586C???
>
> Mike>WE0H
> http://www.we0h.us/lf.html
>
> -----Original Message-----
> From: [email protected] [mailto:[email protected]]On
> Behalf Of Mike Staines
> Sent: Thursday, October 24, 2002 7:50 PM
> To: [email protected]
> Subject: RE: [Lowfer] Post Capture Processing (was: XSR in CT)
>
> I, too, have been dabbling in this area. But coming from a different
aspect.
>
> I have been playing with Spectrum Lab and it's ability to "dump" the FFT
> buffers to a file. I am working on (simple) software that would massage
the
> data at a point between the FFT engine and the graphic display. This also
> opens the possibility of using other plotting programs/software to display
> the data.
>
> This started as a program to compare the energy at frequencies around the
> desired signal with the energy AT the desired frequency. With appropriate
> averaging (still TBD) I feel that I can have the software alert me that it
> is possible a signal is present. Combine this with computer control of my
> Icom receivers and it is *possible* (in my twisted mind) to "scan" all
> lowfers and get informed when energy (a signal) is present on the
frequency
> that is not present on adjacent frequencies, i.e. not wideband noise.
>
> The software is real and I have some interesting results but nothing to
> publish yet.
>
> Thoughts?
>
> Mike
>
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