tag:blogger.com,1999:blog-7396057548824140336.post3937006138850455268..comments2023-07-31T22:42:16.719-07:00Comments on WA0UWH - Electronics & HAM Radio Blog: Return Trip to Mt PilchuckEldon R. Brown SRhttp://www.blogger.com/profile/16271671761017534867noreply@blogger.comBlogger3125tag:blogger.com,1999:blog-7396057548824140336.post-49135458461890676242010-08-05T08:44:16.246-07:002010-08-05T08:44:16.246-07:00UPDATE: to avoid public laser concerns, I will lea...UPDATE: to avoid public laser concerns, I will leave the laser at home and do the LOS experiment with a normal flash light.<br /><br />EldonEldon R. Brown SRhttps://www.blogger.com/profile/16271671761017534867noreply@blogger.comtag:blogger.com,1999:blog-7396057548824140336.post-17749709609124197712010-08-04T19:55:08.659-07:002010-08-04T19:55:08.659-07:00Follow Up,
> Do you actually modulate a light ...Follow Up,<br /><br />> Do you actually modulate a light "carrier" with intelligence, and do you plan to establish a contact with a like minded individual on the other end? I didn't know "they" were doing this these days. What is the range for light transmission<br /><br />Charlie's question stems from a statement on my web page regarding a desire to try Line-of-sight QSO via Laser Light.<br /><br />Several years ago, I was driving in a local hilly area, while at a stop light, I was repeatedly flashed by a rotating Laser Level being used on a distant construction site. The laser light was distracting, but at a distance it was not objectionable, no more than a car tail light.<br /><br />Also when I was a kid, I remember reading and seeing a photo of a very early low power laser located in San Francisco, where the photographer was located in Oakland. The little low power laser appeared several time brighter (in the photo) as compared to the high wattage street lamps and signs. I have always wanted to duplicate that experiment.<br /><br />I now have a small laser, with wires attached, which can be keyed and put on a tripod. I do not know if the laser will make the distance for a QSO - But I want to try. All I need is for someone to be looking, and maybe with a similar set up, a real LOS QSO can take place.<br /><br />Charlie, I think your setup site is about 32 miles from Mt. Pilchuck - it will be interesting to measure the width of the observed light at your location - I suspect it will be at least ten feet wide depending on smoke and haze.<br /><br />Note: we should observe eye protection precautions until we understand the real physics here. Maybe the laser should only be observed via a digital camera display shielding your eyes (as some have suggest for looking at the sun). I suspect as with the above observed construction laser, a keyed very low power laser is not detrimental.<br /><br />Let me know if you want to try.<br /><br /><br />Regards,<br />Eldon BrownEldon R. Brown SRhttps://www.blogger.com/profile/16271671761017534867noreply@blogger.comtag:blogger.com,1999:blog-7396057548824140336.post-86200301528201430472010-08-02T12:42:20.588-07:002010-08-02T12:42:20.588-07:00Eldon,
I liked the HeyWhatsThat site. Next weeken...Eldon,<br />I liked the HeyWhatsThat site. Next weekend I will be at Mt. Snow VT so I looked that up and added it to the list! Hope to hear you on the QRP Echo Link Conf again with a report.<br /><br />Paul K3PG<br />http://pgerhardt.blogspot.comPaul Gerhardthttps://www.blogger.com/profile/06791114427049402854noreply@blogger.com