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OpticalDx



Cluster Activity

Spots per uW band today:
UK spotter or spotted only.

Solar data:
SFI
74
A-Index
11
K-Index
4
Exp.K
3
Sunspots
0
Activity
qui
GMF
act
Aurora?
no

My Weather

Date:21/11/17 Time:11:42
Temp:13C
Wind Speed:10mph
Wind Dir:202deg
Pressure:1002.78mB
Humidity:118%
Dew Point:16.6C
UKHASnet
ATV using LED Tx

I modified the German designed Laser TX to drive a 1W Golden Dragon LED.

Managed to receive my own transmission at a portable site 11km away using the German designed Photodiode Rx at 20MHz, results were not that good, sync to weak lock of the video signal.

This time i used a photomultiplier tube as the receiver and it worked much better!
The TX alignment was not optimised in beam heading because i set this before going /p!

Tx 20MHz carrier FM ATV to 1W LED and 30cm Fresnel lens.
Rx Photomultiplier tube into into a 20 > 70MHz converter, then into a Zeta 1000L sat receiver.


Optical ATV with LEDTx











Last page added:16/08/17 15:45
M0DTS.co.uk