Early alpha version available of my miniVNA software.
More info on this page: PA7N miniVNA |
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| Karl Jan Skontorp | vrijdag 18 december 2009 22:32 |
Hi!
I just wonder which components you have used in Delphi to make the graphics. I'm working on a similar project and is just wondering.....
73's de Karl Jan LA3FY |
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| Karl Jan skontorp | vrijdag 18 december 2009 22:37 |
Delphi and grapichs.....
Of course I mean in the miniVNA project!!
kj |
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| Erwin PA7N | zaterdag 19 december 2009 11:14 |
Hi Karl Jan,
I use no special component for drawing. Just TBitmap and double buffered painting. This way you get a flicker free screen.
The communication with miniVNA runs in a separate thread so it won't block the user interface.
73 Erwin |
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| Matti Niemela | zaterdag 9 januari 2010 17:10 |
Hello Erwin PA7N,
Thank you for the nice MiniVNA program. Latest version works OK. I like especially possibility to tune also under 100 KHz even though the levels are lower of course. Anyway I can check the resonance frequencies of LC-circuits on VLF-band 10 kHz-100 kHz also with these reduced levels.
I measured following levels with W&G Level meter SPM-19 in to 50 Ohm load.
5 kHz - 53.2 dBm
10 kHz -33 dBm
20 kHz - 18.8 dBm
50 kHz -7.7 dBm
75 kHz - 6.9 dBm
100 kHz -6.2 dBm
Best 73
Matti OH2ZT |
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