Reference

Components
Label	Description
L1	(Miller 6318) 0.3 to 3.0 mH
L2	(Miller 6319) 8 to 60 mH
C1	549 pf + 1050 pf + 1500 pf
C2	910 pf
C3	0.047 $\mu$f
C4	100 pf
C5	1 $\mu$f
D1	1N914
D2	1N914
R1	1 K$\Omega$
R2	100 K$\Omega$
R3	22 K$\Omega$
R4	15 K$\Omega$
R5	10 K$\Omega$
R6	2.2 K$\Omega$
R7	22 K$\Omega$
R8	10 K$\Omega$
R9	4.4 K$\Omega$
R10	1 M$\Omega$
R11	5 M$\Omega$
R12	33 K$\Omega$
U1	LF353 dual JFET op amp
U2	LF353 dual JFET op amp
U3	LF353 dual JFET op amp
	$\pm$V decoupled with 0.1 $\mu$f at chip

Connections
A	Coaxial cable input from antenna preamplifier
B	Coaxial cable output from shielded LC circuit
C	BNC connector to oscilloscope
D	Interconnection to detector circuit
E	Interconnection to output buffer
F	BNC connector to A-to-D converter

Very Low Frequency Radio Stations
Site	ID	Frequency	Radiated Power
		KHz	KW
Cutler, ME	NAA	24.0	1000
Jim Creek, WA	NLK	24.8	250
Lualualei, NI	NPM	21.4	566
LaMoure, ND		25.4
Aquada, Puerto Rico	NAU	40.75	100
Keflavik, Iceland	NRK	37.5	100
Niscemi, Italy		39.9	25
Harold E. Holt, Australia	NSW	19.8	1000
Rhauderfehn, Germany		18.5	500
Rosnay, France	HWU	15.1	400
St. Assie, France	FTA	16.8	23
Bombay, India		15.1
Tavolara, Italy	ICV	20.27	43
Ebino Huyshu, Japan		23.4
Noviken, Norway	JXN	16.4	45
Arkhanghelsk, Russia	UGE	19.4	150$^*$
Batumi, Russia	UVA	14.6	100$^*$
Kaliningrad, Russia	UGKZ	30.3	100$^*$
Matotchkinchar, Russia	UFQE	18.1	100$^*$
Vladivostok, Russia	UIK	15.0	100$^*$
Anthorn, United Kingdom	GQD	19.0	42
Criggons, United Kingdom	GBZ	19.6	44
Rugby, United Kingdom	GBR	16.0	45

$^*$Input power