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Table 1 Specifications of receiver components

From: A monitoring network for anomalous propagation of aeronautical VHF radio waves due to sporadic E in Japan

Location (CODE)

Sarobetsu (SAR)

Sugadaira (SGD)

Oarai (ORI)

Chofu (CF2)

Kure (KUR)

Onna (ONA)

(a) Geographic coordinates

Latitude

45.16° N

36.42° N

36.33° N

35.66° N

34.24° N

26.50° N

Longitude

141.75° E

138.32° E

140.58° E

139.54° E

132.53° E

127.85° E

(b) Antenna specification

Type

Log periodic

Product name

Create design CLP-5130-1

Create design CLP-5130-3

Frequency range

59–1300 MHz

80–250 MHz

Gain

10–12 dBi (10 dBi at 110 MHz)

12–13 dBi (12 dBi at 110 MHz)

Direction

South

West

West

West

Southwest

North

Polarization

Horizontal

Vertical

Horizontal

Horizontal

Vertical

Horizontal

(c) Band-pass filter

Product name

Not used

Not used

AOR ABF128

AOR ABF128

Not used

Not used

Frequency range

108–136 MHz

108–136 MHz

Insertion loss

4 dB

4 dB