Spectrum of a pulse generator. This spectrum is
normally used to calibrate Linrad to give a flat
frequency respons and an optimised pulse response.
This time the computer was equipped with a Linrad version
under work for which the calibration procedure did not work.
and therefore measurements have to be corrected manually
for the frequency response of the receiver hardware.
Raw data from the image.
X and Y are coordinates of the red curve,
the average power in 2.4 kHz bandwidth.
The vertical scale has 641 pixels for 100 dB (0.0156 dB/pixel).
Frequency X Y dX dY
(kHz) (pixels) (pixels) (pixels) (dB)
7.6 92 576 13 2.0
10 118 580 9 1.4
15 171 587 2 0.3
20 225 589 0 0.0
25 278 589 0 0.0
30 332 588 1 0.2
35 385 586 3 0.5
40 438 583 6 0.9
45 491 581 8 1.2
50 545 581 8 1.2
55 598 580 9 1.4
60 652 582 7 1.1
65 705 583 6 0.9
70 758 585 4 0.6
75 812 585 4 0.6
80 866 584 5 0.8
85 919 581 8 1.2
90 973 573 16 2.5
92.2 997 568 21 3.3