Meteor scatter echo duration

[Rainer Ehlert]

Rainer

So what is counted is the number of cycles that the FFT goes through during the event, you can convert this to seconds buy generating a tone for a precise period of time
and then check your log for that event so if you how many cycles are recorded for a 5 second tone it's easy to work how long a single cycle is after which you will have a conversion factor for future use - be aware that the conversion is unique for your computer and may well be different on other computers

You will find an excellent manual for SL here - https://www.qsl.net/dl4yhf/speclab/SpecLab_Manual.pdf

If you post questions on the Radio Meteors Google group I will respond and give more info (all a bit off topic for this group )

Regards

John B

Hi,

A friend and I are wondering how to know how long the duration of an echo of Meteor scatter is.

I got the above answer in Spectrum Lab Users in the groups.io.

I have read how to do it in above answer but still need to diegst it :-)

Thanks Rainer

[Rainer Ehlert]

Hi,

Just made a test by pressing the Signal Generator and starting a stop watch and let it run for about 10 seconds.

First time the waterfall was running at 150 ms and the generator was on for about 10.35 seconds and that gave me a value of 66 which would be 10350 / 66 = 156.18 ms

Then I changed the speed of the waterfall to 100 ms and ran for 10.28 seconds and that gave me a duration of 99 and so 10280 / 99 = 103.83 ms

The third test was waterfall at 200 ms and a time of 10210 msa gives a duration of 46 and so 10210 / 46 = 224.95

Some more tests confirmed and approximate time value like the above.

So I can more or less use the waterfall scroll time ...

Rainer