logo
Most Viewed Last 7 Days
(602)
(601)
(599)
(597)
(597)
(594)


Cluster Activity

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

Solar data:
SFI
71
A-Index
10
K-Index
2
Exp.K
1
Sunspots
0
Activity
qui
GMF
qui
Aurora?
no

My Weather

ArrayDate:09/12/19 Time:21:42
Temp:-0.5C
Wind Speed:2.5mph
Wind Dir:225deg
Pressure:1019.5mB
Humidity:118%
Dew Point:3.1C
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
















Last page added:25/03/00 18:32
M0DTS.co.uk