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,...
Several weeks ago, I listened in on IRLP to the liaison link as Clint KA7OEI and associate set a new distance record for modulated light communication. ...
Hi David, Sorry about the lack of response recently: Between needing nearly a week to get all of the pictures, video, and audio from everyone else, ...
Congratulations Clint and all involved in the record breaking event in Utah. Mike passed on your emails and we read them with excitement. This is what...
Peter for the list. Just posted today was a link to a report where a team led by Clint KA7OEI set up 2 optical stations and managed a 2 way phone contact 107.7...
VARIATION OF SIGNAL LEVEL WITH PARTICLE BOUNCE Our latest tests show WSJT signal levels varying from -16 dB with both TX and RX elevated at 35 degrees falling...
Greetings All, Our latest tests made a comparison using WSJT of both Mike VK7MJ's preamp and Clint KA7OEI's preamp designs behind identical fresnel lenses. The...
Justin and Rex We follow very carefully your experiments. With the time your observations are fully the same ours. The best photo receivers for cloud bounce...
Hi Art, A link is in the actual report on the linked web page: http://reast.asn.au/optical/VK7MO_VK7TW_Particulate_Tests_20070904.pdf And the link to the page...
We have now added a Pulse Width Modulator to the 60 Luxeon array and have been able to achieve reasonable quality voice using clouds and also particle bounce....
... Rex, Justin, Very good work ! Your forward scattering signal is amazing ! Have you an idea of the visibility range the day of your experiment. This signal...
Hello Yves Thank you for your kind comments and processing of our file, which significantly improves it. OK on drop size rather than Relative Humidity. I...
Hello, It occurred to me that I never mentioned that I'd finally gotten the material together to (more or less) complete the page(s) describing the 107 mile...
Hello, Last night (October 3) at around 9 PM, MDT, we were able to complete an optical QSO over a path of about 174 miles (278 km) between a site close to...
Well done to Clint and the boys, it really looks like we here in VK will never be able to find locations like you have in the States. Look forward to reading...
G'day Clint, Congratulation to you, Ron, Gordon and Brett. Wow, 278km, keep up the great work. 73, Justin VK7TW & Rex VK7MO ... complete an ... Peak in ... ...
Hi Guys, I have been busy making PCB's and sourcing components..Some may be interested to know that 2N5457's are usually out of stock at Dick Smith's....
We have been testing a 35 photodiode optical receiver for cloud bounce and achieved: 1. Significantly improved voice communication over a 1.2 km path 2. WSJT...
Rex, Justin and Ken, you did a very good work ! You have demonstrated a property I believe very long time ago : For optical cloud bounce, the TX beam and the...
Yves Thank you for your kind comments on out experiments with the Multi- ... A circuit diagram has been added to the VK7MO photos (last item) which shows the...
We have been checking signal levels using the 60 Luxeon TX and 35 photodiode RX each evening over the last 12 days on the 27 km path from VK7MO to VK7DY. In...
Rex, Justin and Ken, you noticed : "1 day unexplainable a there were good clouds and no rain or mist" During our 40 Km cloud bounce laser tests we also...
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