SLOW Spectrum Display Crawl. Was: Re: [DSP-10] DSP-10 for 144 MHz EME

[Courtney Duncan]

I have tried various other suggested pallette's and have gone back to 
the "factory" settings for now.  It has become hard not to use a 
spectral display.  Makes it tough to go back to some geriatric rice box 
like m TS-680 on HF.

I have set SpecAve to 1200 so that the screen is about 15 hours tall.  
This allows me to monitor day and night and see when there has been 
activity, or openings, on a frequency.  I've done this for a few months, 
switching around among the calling frequency, beacons, nets, and QSY 
"channels" (like 144.200, 210, 250, 170, 100, 283, etc.)  I usually save 
the screen a couple of times a day to maintain "a record."  It has been 
very interesting and has given me "something to do" while I don't have 
the time to be working on construction/development.

I have also found some oscillator in the house that follows the inside 
temperature (furnace cycles) so precisely that I can nearly read the 
indoor temperature off the screen with history.  I don't think it's the 
TCXO, if it were that, all the external birdies and stations would be 
wandering around similarly.  The N6NB/DM05 beacon, for example, moves 
around diurnally too, but in much smoother ways with less frequency 
shift.  Maybe it's a VCR or clock radio or something, I don't know.

Question:  If I turn off the PC and leave the DSP-10 (old EZLITE 
version) on, it continues running.  If I turn the PC back on, is there 
any way to reconnect UHFA to it without rebooting and reloading the DSP-10?

Courtney, n5bf
http://home.earthlink.net/%7Ejccool3/dsp10.html
http://home.earthlink.net/%7Ejccool3/hamradio.html

KD7TS wrote:

>First let me point out that I don't look for EME. My interest is in finding
>signals below the noise level of the receiver (on 10 gc). Using the DSP software
>for this application pretty well precludes copying any modulation scheme that
>might provide audible clues as to message content. In other words the signal is
>not audible. That said.. here's what has been working well for me.
>
>I have the pallette set with no adjacent colors in the same shade. I have found
>(from Johns chart) colors which have the most contrast from one to the next and
>from the coldest colors to the hottest. This was a chore. I don't know that this
>is the final incarnation, but for the past 2 months it has been in continuous
>use and seems to serve well. 
>
>For really weak stuff I run the spec_ave at 24 or 30 and the scale at 1 DB/div.
>Sig/Noise could be improved with longer spec_ave but is too boring to watch.
>Contrast is at 15 and bright at 75. 
>
>I have not found this to be of much use, but it is very interesting to play with
>!! 
>
>I would like to hear how others are using the waterfall screen, is it useful ??
>
>Mike KD7TS
>
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