Hi all We did the first field test tonight over a mile. I was 250ft up Westmorland and ZL3TCM was on the flat inside where it was warm on the recieve box. I...
Hi, Would there be any amateur radio operators located in the Sydney Metro area that would like to participate in optical communication experiments. Cheers...
... Interesting. I have noticed on many occasions visible inversions when looking out to sea from Torquay on hot summer days. Some days the horizon looks...
Hi everyone, Just a suggestion but what about a monthly get together on radio using the 2 metre IRLP node system to compare notes, ideas, progress etc Regards,...
... At least one of the optical DXers isn't an amateur, so that would exclude some. A better idea might be to use the chat room here or some other PC-PC VoIP...
Well gents! I am neither an amateur OR a possessor of Internet - but that's not to say that I can't LISTEN to a 2 metre or 7 cm net - so far as I'm concerned,...
... Well, given that nod of agreement, I'm going to suggest using IRLP reflector 9509, provided it's free on the time of your choosing. This reflector is also...
Thanks Graeme! We had pix of that lens in the slide show produced for GippsTech, Ballarat ARG and Eastern & Mountain Districts Amateur Radio Club. It's a...
Dear Group, Just completing arrangements for a new PowerPoint presentation at Geelong on 14 September. Slides, audio and new video components should be...
Hi All, Chris has asked me to clarify that the talk will be given to the Geelong Radio And Electronics Society. When: 8pm Thursday 14th September Where: Rear...
Dear folks, Happened to be tuning 14.233 MHz with newly acquired MMSSTV decoding software on my ancient Murphy B40 17-valve receiver on 22 July, and the first...
Dear Friends of Chris & Prue Long, This is just a circular letter to tell you that following the sad death on 24 June 2006 of our old friend - and the Best Man...
Hi Chris, Congratulations. Very sad news about Tony's death. As you say a reminder we do not know how long we have. 73, Ron VK3AFW ... From: "Chris Long"...
VK3AFW
vk3afw@...
Aug 22, 2006 3:22 am
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Hello all, On August 20th, French optical experminenters F1AVY and F8DO achieved a one-way laser QSO via cloudbounce over a path of more than 40 km. The ...
Hi folks from Hobart airport, as I prepare to return to Victoria on the 'plane. Last night, Sunday 15 October, we set up an optical contact from a point near...
Hi Chris, Good work. 73, Ron VK3AFW ... From: "Chris Long" <lichtsprecher@...> To: <Optical_DX@yahoogroups.com> Sent: Monday, October 16, 2006 2:09 PM...
VK3AFW
vk3afw@...
Oct 16, 2006 6:24 am
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Hi All, Rex VK7MO and Justin VK7TW have been experimenting with digital modes over a reflected optical link (see below). I've uploaded the PC screen shot to...
Hello, I have been doing some testing with the Hobbs Photodiode Front End recently, seeing how it compares with other types of circuits that are out there....
The following web site gives details of Optical Experiments, including on non-line of sight paths, which are being carried out using WSJT JT65a mode, in...
I have been experimenting with other optical receiver circuits recently. As per a threat in a previous message, I am now posting some comments and results. ...
Hi Clint, Thanks for another very interesting posting on your exploits with optical front-ends. (BTW, there may be a small error in your circuit at the input....
Hello David, ... This is one thing that I'd meant to comment about in the original email. Because one of the goals was to design a circuit that could operate...
Hi Dave, Well, the error on my schematic finally sunk in - after it was pointed out to me directly that the "cold" side of the photodiode was grounded: I'd...
Hello again, Over the holiday, I had a bit more time to do some refining and experimentation with the optical receiver circuits and have come up with some...
Clint, Very exhaustive work! Most of your comments confirm ours during all our measurements. However, our goal was very different and not for optimising the...
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