Operation pass 28-1

UTC Date: 11/28/98

Tape Start Time: 0:51

Spectrograms

Wave files

• wave 1

• wave 2

• wave 3

• wave 4

Data Log sheet

Sferic density: 0-5 (0=low 5=high)
M=Time Mark
T=Tweek
W=Whistler
A=Alpha
C=Chorus 

Note: The data was analyzed at home on the computer. The time logged is taken from the counter on the Windows Media Player display.

Counter time format: MM:SS

Time	Entry	Sferic density
0:11	M: 0:51 UTC, noise: personnel near antenna	3
2:11	M: 0:53 UTC, T: present	3
3:30	S: constant	3
4:25	T: burst	3
6:25	tone from wwv receiver (accidently hit button)	3
7:11	M: 0:58 UTC, T: many	3
8:40	change in AC hum	3
9:23	T: burst	4
9:58	T: multiple burst	4
11:26	T: multiple burst	4
12:11	M: 1:03 UTC	4
12:40	slow change in AC hum over several seconds	4
13:38	T: burst	4
13:53	S: burst	4
14:34	T: multiple, S: crunch	4
15:11	M: 1:06 UTC, T: burst	4
16:06	S: pop heard - sferic?	4
17:07	T: multiple	4
17:42	W: very very weak; dispersed	4
19:00	T: present	4
19:29	T: mutiple burst	4
20:11	M: 1:11 UTC	3
21:27	S: burst	3
22:30	S: burst	3
22:58	S: crunch	3
23:30	A: weak	3
24:36	T: burst	4
25:11	M: 1:16 UTC	4
26:09	S: pop	4
27:53	T: multiple	4
30:00	end of data	-

Note from the field

On this mission we were a little more prepared, the data taking was a success, we accomplished what we set out to do. The weather was a little bit threatening but somehow it avoided raining on our site, it was close, we could smell the rain in the air and it was a bit windy and cold.

Here are some images of the weather front that was moving in on us:

What did we do at the site?

As usual, we recorded the Operation 28-1 pass, it went very smoothly compared to the last Operation. This mission we did some experiments with several different things. We recorded this operation using ac powered equipment, a Honda 500 watt generator (Thanks to our new team member Ron Hunt for use of his generator) was running everything except the VLF Receiver. We used a Sony TC-KE500S for recording the Operation on cassette tape and a 200 mhz desktop computer to record the Operation in digital form, both methods worked very well. It was really neat to run the latest spectrogram program at the site, We were displaying live VLF or scanning as it's called in the program. It looked really neat-o on the 17" monitor at the site.
We also ran some transmitting experiments, we were able to transmit about .4 mile away from the site, the details can be found (soon, just started on it) here on the transmitting projects page.

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