Photoelectric Communication?
Photoelectric Communication?
Hi
I have come across a reference to this in an Italian document. Does anyone know how that worked?
Many thanks in advance!
I have come across a reference to this in an Italian document. Does anyone know how that worked?
Many thanks in advance!
The enemy had superiority in numbers, his tanks were more heavily armoured, they had larger calibre guns with nearly twice the effective range of ours, and their telescopes were superior. 5 RTR 19/11/41
The CRUSADER Project - The Winter Battle 1941/42
The CRUSADER Project - The Winter Battle 1941/42
Re: Photoelectric Communication?
The enemy had superiority in numbers, his tanks were more heavily armoured, they had larger calibre guns with nearly twice the effective range of ours, and their telescopes were superior. 5 RTR 19/11/41
The CRUSADER Project - The Winter Battle 1941/42
The CRUSADER Project - The Winter Battle 1941/42
- Juha Tompuri
- Forum Staff
- Posts: 11562
- Joined: 11 Sep 2002, 21:02
- Location: Mylsä
Re: Photoelectric Communication?
Yep, a Lichtsprechgerät.
More detailed info: http://www.la6nca.net/tysk2/lispr/lispr.pdf
http://www.la6nca.net/tysk2/lispr/a 2-way audio communication equipment.
The signal is transferred on a light beam from a 5-watt bulb.
The light beam is modulated with a light phase modulator.
The light beam is AM-modulated with a moving prism.
The position of this prism is manipulated of the transmitter audio amplifier.
Red or IR filter can be inserted in the beam.
Receiver and transmitter have one lens each.
Light detector is placed 250 mm behind the receiver lens.
Diameter on the light detector is less than 1 mm,
so the direction of the unit is very important.
Diameter of the light beam is only 1.4 meter at 250 meter from the transmitter lens.
This will give a diameter of 7 meter 1 km away.
More detailed info: http://www.la6nca.net/tysk2/lispr/lispr.pdf
Last edited by Juha Tompuri on 07 Jan 2017, 22:15, edited 1 time in total.
Re: Photoelectric Communication?
Thank you Juha, much appreciated!
The enemy had superiority in numbers, his tanks were more heavily armoured, they had larger calibre guns with nearly twice the effective range of ours, and their telescopes were superior. 5 RTR 19/11/41
The CRUSADER Project - The Winter Battle 1941/42
The CRUSADER Project - The Winter Battle 1941/42
- Juha Tompuri
- Forum Staff
- Posts: 11562
- Joined: 11 Sep 2002, 21:02
- Location: Mylsä
Re: Photoelectric Communication?
Thanks,
"Information not shared, is lost", as the Forum motto goes.
"Information not shared, is lost", as the Forum motto goes.
- Attachments
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- http://www.la6nca.net/tysk2/lispr/lispr.pdf
- Lichtsprechgerat.2.png (85 KiB) Viewed 1518 times
Re: Photoelectric Communication?
Thanks again Juha!
The enemy had superiority in numbers, his tanks were more heavily armoured, they had larger calibre guns with nearly twice the effective range of ours, and their telescopes were superior. 5 RTR 19/11/41
The CRUSADER Project - The Winter Battle 1941/42
The CRUSADER Project - The Winter Battle 1941/42
Re: Photoelectric Communication?
I have put a little bit about LiSpr250/130 & a Japanese photophone on pages 2-4 of part 3 of this series that covers other IR systems generally.
http://hmvf.co.uk/forumvb/showthread.ph ... ision)-1-4
http://hmvf.co.uk/forumvb/showthread.ph ... ision)-1-4
-
- Member
- Posts: 373
- Joined: 23 Apr 2017, 07:01
- Location: Canada
Re: Photoelectric Communication?
I'm surprised they were able to develop something like this, it seems fairly high tech!