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Cluster Activity

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

Solar data:
SFI
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A-Index
11
K-Index
4
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Aurora?
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My Weather

Date:21/11/17 Time:11:45
Temp:13C
Wind Speed:17.5mph
Wind Dir:202deg
Pressure:1002.75mB
Humidity:118%
Dew Point:16.6C
UKHASnet
22-25GHz Amplifier

Got this from another Amateur but no info.....

Seems to be power amplifier, 3 stages to bias up, Negative bias required, Drains are 1.6,1.4,1.2Ohm to ground respectively.
Anyone got an idea on what current level it should be biased up to?!

SMA input and WG20 output.

Amp inside



I made a bias board and tested to ~100mW output, no more information found but the current draw was much more than the associated output power!!










Last page added:16/08/17 15:45
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