logo

ALL



Cluster Activity

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

Solar data:
SFI
71
A-Index
8
K-Index
3
Exp.K
2
Sunspots
0
Activity
qui
GMF
qui
Aurora?
no

My Weather

ArrayDate:16/02/20 Time:22:22
Temp:6.5C
Wind Speed:25mph
Wind Dir:247deg
Pressure:987.2mB
Humidity:47%
Dew Point:-4.1C
UKHASnet

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:25/03/00 18:32
M0DTS.co.uk