Last week, we decided to do more testing of our gear - and run a few experiments. Since the last test, I was able to do some more testing on my optical ...
Clint, Very interesting experiments. I have read your entire Internet site about optical com and I think you did a very exhaustive study. You notice several...
Some time ago, I constructed a PIC-based Pulse Width modulator for high powered LEDs - so I finally decided to put some details online here: Full details may...
Clint, The pulse width modulation with compressed input is a good improvement mostly for laser diodes. It is because with low cost red laser diodes, the...
Hello to all. Is there somebody who knows the properties of LEDs at very low current (a few microamperes range)? The constructors datasheets never give light...
Dear folks, I have no I/net at home so I've typed this on my home computer and am loading it via memory stick at this I/net cafe - hope it doesn't scramble the...
Hello to all. It was a great pleasure for us to read the last mail from Chris. All the points are very effective and are of value to the group but may need ...
This mail contains a link to load, if you want, all the files about our complete cloud bounce presentation. To run this Power Point presentation all the files...
VK3AML RE:RECENT CLOUDBOUNCE EXPERIMENTS USING JT65a etc. Yves (F1AVY), I hear what you say but I totally disagree with your advocacy of lasers. The tx system...
Chris I want to precise some point about your remarks. I am not an unconditional laser advocate and I believe the LEDs using is a very powerful experiment...
Rex, I am very sorry because for an unknown reason three of my photos have been inserted into your album. Can you please clean them because they cannot be...
Hello Yves and others, I was wondering, given the presence of external focusing optics, about the difference in sensitivity between a large area and small area...
... Clint A photodiode is a quantum device that means one photon that comes in the semiconductor structure with the good energy level has a certain probability...
Hello Yves, Thanks you for your response. I had seen it mentioned elsewhere that when using external lenses to gather light, that the use of a larger-area...
I send you a link to load, if you want, a PDF file about one of our experiments about "the EME light pollution" For not be server rejected I send this link...
Hello: Can someone help me by suggesting a source to buy a few (fewer than 5) S2386 over the Internet? I'm in Malaysia and the smallest order I can place here...
Hi again, I'm not sure which version of the S2386 you might be interested in (there are 6 variants) or exactly what sort of optics might be associated with it,...
Hello all The best in the S2386 photodiodes series is the S2386-18K. NEP lower than 7 10^-16 W/Hz^1/2. Typical Rshunt 100 Gohms Capacitance 140 pF Idark max 2...
I'm thinking of building one of these as per the v2 circuit shown in the files section. Is this the latest design? Is there a R27 - I can't find it on the...
Greetings Again Barry, I realise the version 2.0 schematic had D1 & D2 around the wrong way. I have corrected and uploaded version 2.1. This now matches the...
It seems likely that one could gain some performance improvement on LED cloudbounce by using a larger area detector than the generally used BPW34. BACKGROUND ...
... Rex The mounting of 4 x BPW34 in serial on a PTFE substrate (or glued on their edges by "special glass" cyanocrylate ?) could be a sensitive area and SNR...
Following earlier tests with a 30 LED array based on the cheaper Copy LEDs I constructed a multi-LED array with actual LUXEONS and using L20P005 narrow lenses....
The improved Multi-LED array has been tested in situations both with and without clouds. With light clouds such that the moon still shone brightly through,...
