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436MHz DATV Up-Converter (196)
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Cluster Activity

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

Solar data:
SFI
71
A-Index
6
K-Index
2
Exp.K
0
Sunspots
12
Activity
qui
GMF
qui
Aurora?
no

My Weather

Date:18/01/18 Time:13:20
Temp:6.5C
Wind Speed:2.5mph
Wind Dir:180deg
Pressure:995.85mB
Humidity:118%
Dew Point:10.1C
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:07/01/18 10:15
M0DTS.co.uk