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GB3YT (YV,YX) (329)
117km Lightwave QSO! (328)
Chirp Tx with Red Pitaya - 1 (328)
436MHz DATV Up-Converter (328)
Summer Fun ATV 2008 (328)
3.4GHz Airspan Board mods (328)


Cluster Activity

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

Solar data:
SFI
71
A-Index
11
K-Index
1
Exp.K
0
Sunspots
0
Activity
qui
GMF
act
Aurora?
no

My Weather

ArrayDate:22/02/19 Time:12:52
Temp:18.5C
Wind Speed:5mph
Wind Dir:157deg
Pressure:1031.93mB
Humidity:250%
Dew Point:48.5C
UKHASnet

After some chat with Charles i've made a plot of power curve of the combined RD06 and RD15 device...

gnuradio was used to ramp the output amplitude of a cw signal from the DATV Express.
A coupled output from the RD15 amp stage was fed into an rtlsdr dongle, the amplitude measured and plotted, the result is below.
The power is swept from very low o/p up to 9Watts.

Amplifier plot




In GNUradio right or wrong i've used the function probe to feed back the sawtooth signal from a signal source to a variable which is the value of the multiply const block.

GNURadio power sweep setup


















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