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70MHz



Cluster Activity

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

Solar data:
SFI
67
A-Index
6
K-Index
2
Exp.K
0
Sunspots
0
Activity
qui
GMF
qui
Aurora?
no

My Weather

ArrayDate:09/07/20 Time:17:40
Temp:18C
Wind Speed:2.5mph
Wind Dir:247deg
Pressure:1013.11mB
Humidity:250%
Dew Point:48C
UKHASnet
71MHz DATV Amplifier

As requested by a few people here is the info for my 4m Amplifier for DATV.

It's basically the same design as the 146MHz one just on 71MHz.

Hopefully it's fairly self explanatory!

The RD70 does need good heat spreading so advise bolting down onto some copper before the heat sink.

Input ~0dBm gives around 10W output at -50dB shoulders RB DATV.
You may need to tweak the tuning for this gain but it's fairly forgiving.


Both Amps Connected



Both Amps Connected 2



RD06 Schematic



RD70 Schematic















Last page added:25/03/00 18:32
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