Roger G3XBM's (Mainly) Amateur Radio Blog

Simple QRP projects, 10m, 8m, 6m, 4m, FT8, 160m, WSPR, LF/MF, sub-9kHz, nanowaves and other random stuff, some not related to amateur radio.

Showing posts with label optical 481THz. Show all posts

Showing posts with label optical 481THz. Show all posts

13 Mar 2026

2013 optical tests over the horizon

Before my 2013 stroke I enjoyed 481THz optical tests over the horizon. What surprised me at first was that, even when absolutely nothing was...

8 Oct 2025

Flatlights

Before my 2013 stroke got in the way, I was hoping to get much further over the horizon with 481THz red light. To that end I purchased some...

5 Jun 2013

Cloudbounce and scatter optical and IR tests

This morning I read a most interesting article about French cloudbounce and scatter optical tests using lasers. The article is some years ol...

1 Apr 2013

Tripods for optical comms

The one I missed on eBay This evening I was annoyed with myself for not bidding for a tripod on eBay in time that went for just £6.50 in...

26 Feb 2013

481THz optical tests over the horizon tonight

This evening I am doing my first "over-the-horizon" optical test this year. The main aim is to check performance with the new rece...

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Roger G3XBM: Burwell, Cambridge, United Kingdom

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