WSPR 17m (18.068 - 18.168 MHz) band activity data recorded for a 24 hour period on the 02 ~ 04/11/2017

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Data from the WSPR web site relating to monitoring and transmission from VK6YSF Northam Western Australia.

WSPR Frequency: Dial 18.1046 MHz USB (occupied bandwidth 18.1060 - 18.1062 MHz)

Grid location: OF88II

Local Time = +8:00 hours (0:00 = 8:00AM)

Transmission Power 37 dBm (5Watts)

SSN (Sun Spot Number): 27

Equipment: TS-930 at 5W, Radio computer interface

Antenna:  Sloper Antenna:  Sloper Antenna  -  40 & 15m Bands with T-Match tuner  

                 Doublet Antenna: Multi-band dipole with T-Match tuner and 4-1 Current Balun 

                 L Antenna:           L Antenna with T-Match tuner  

This exercise was to compare the 40m Sloper Antenna with the Doublet Antenna and the L antenna for operations on the 17m amateur band.

Conclusion is that there is no compelling performance deference between the Antennas.

WSPR data has been graphed using Excel. Horizontal axis = UTC Time, Vertical axis = dB below the noise floor.

Antenna:  Sloper Antenna:  Sloper Antenna  -  40 & 15m Bands with T-Match tuner  

                 Doublet Antenna: Multi-band dipole with T-Match tuner and 4-1 Current Balun 

                 L Antenna:           L Antenna with T-Match tuner  

AL7Q - NINILCHIK, AK, USA - RECEIVED BY VK6YSF 

Distance: 13109 km

Grid location: BP40fc

dBm: 37

WSPR data has been graphed using Excel. Horizontal axis = UTC Time, Vertical axis = dB below the noise floor.

Antenna:  Sloper Antenna:  Sloper Antenna  -  40 & 15m Bands with T-Match tuner  

                 Doublet Antenna: Multi-band dipole with T-Match tuner and 4-1 Current Balun 

                 L Antenna:           L Antenna with T-Match tuner  

F1RHS - CAMPSAS, France- RECEIVED BY VK6YSF 

Distance: 14326 km

Grid location: JN03pv

dBm: 30

WSPR data has been graphed using Excel. Horizontal axis = UTC Time, Vertical axis = dB below the noise floor.

Antenna:  Sloper Antenna:  Sloper Antenna  -  40 & 15m Bands with T-Match tuner  

                 Doublet Antenna: Multi-band dipole with T-Match tuner and 4-1 Current Balun 

                 L Antenna:           L Antenna with T-Match tuner  

JF1MUX – JAPAN - RECEIVED BY VK6YSF 

Distance: 7869 km

Grid location: PM95vr

dBm: 33

WSPR data has been graphed using Excel. Horizontal axis = UTC Time, Vertical axis = dB below the noise floor.

Antenna:  Sloper Antenna:  Sloper Antenna  -  40 & 15m Bands with T-Match tuner  

                 Doublet Antenna: Multi-band dipole with T-Match tuner and 4-1 Current Balun 

                 L Antenna:           L Antenna with T-Match tuner  

JP7DVX – Hirosaki-city, Aomori, Japan - RECEIVED BY VK6YSF 

Distance: 8322 km

Grid location: QM09nq

dBm: 40

WSPR data has been graphed using Excel. Horizontal axis = UTC Time, Vertical axis = dB below the noise floor.

Antenna:  Sloper Antenna:  Sloper Antenna  -  40 & 15m Bands with T-Match tuner  

                 Doublet Antenna: Multi-band dipole with T-Match tuner and 4-1 Current Balun 

                 L Antenna:           L Antenna with T-Match tuner  

VK2CPR – ALBURY, NSW, Australia - RECEIVED BY VK6YSF 

Distance: 2825 km

Grid location: QF33lw

dBm: 40

WSPR data has been graphed using Excel. Horizontal axis = UTC Time, Vertical axis = dB below the noise floor.

Antenna:  Sloper Antenna:  Sloper Antenna  -  40 & 15m Bands with T-Match tuner  

                 Doublet Antenna: Multi-band dipole with T-Match tuner and 4-1 Current Balun 

                 L Antenna:           L Antenna with T-Match tuner  

VK2EFM – Kariong, NSW, Australia - RECEIVED BY VK6YSF 

Distance: 3233 km

Grid location: QF56pn

dBm: 37

WSPR data has been graphed using Excel. Horizontal axis = UTC Time, Vertical axis = dB below the noise floor.

Antenna:  Sloper Antenna:  Sloper Antenna  -  40 & 15m Bands with T-Match tuner  

                 Doublet Antenna: Multi-band dipole with T-Match tuner and 4-1 Current Balun 

                 L Antenna:           L Antenna with T-Match tuner  

VK2JFP – NSW, Australia - RECEIVED BY VK6YSF 

Distance: 3232 km

Grid location: QF58kx

dBm: 23

WSPR data has been graphed using Excel. Horizontal axis = UTC Time, Vertical axis = dB below the noise floor.

Antenna:  Sloper Antenna:  Sloper Antenna  -  40 & 15m Bands with T-Match tuner  

                 Doublet Antenna: Multi-band dipole with T-Match tuner and 4-1 Current Balun 

                 L Antenna:           L Antenna with T-Match tuner  

VK4TMZ – Warner, QLD, Australia - RECEIVED BY VK6YSF 

Distance: 3526 km

Grid location: QG62lq

dBm: 37 ~ 40

WSPR data has been graphed using Excel. Horizontal axis = UTC Time, Vertical axis = dB below the noise floor.

Antenna:  Sloper Antenna:  Sloper Antenna  -  40 & 15m Bands with T-Match tuner  

                 Doublet Antenna: Multi-band dipole with T-Match tuner and 4-1 Current Balun 

                 L Antenna:           L Antenna with T-Match tuner  

VK6PK – WOOROLOO, WA, AUSTRALIA - RECEIVED BY VK6YSF 

Distance: 37 km

Grid location: OF88ee

dBm: 37

WSPR data has been graphed using Excel. Horizontal axis = UTC Time, Vertical axis = dB below the noise floor.

Antenna:  Sloper Antenna:  Sloper Antenna  -  40 & 15m Bands with T-Match tuner  

                 Doublet Antenna: Multi-band dipole with T-Match tuner and 4-1 Current Balun 

                 L Antenna:           L Antenna with T-Match tuner  

VK8ZI  – Sanderson NT, AUSTRALIA - RECEIVED BY VK6YSF 

Distance: 2521 km

Grid location: PH57ef

dBm: 23

WSPR data has been graphed using Excel. Horizontal axis = UTC Time, Vertical axis = dB below the noise floor.

Antenna:  Sloper Antenna:  Sloper Antenna  -  40 & 15m Bands with T-Match tuner  

                 Doublet Antenna: Multi-band dipole with T-Match tuner and 4-1 Current Balun 

                 L Antenna:           L Antenna with T-Match tuner  

VK6YSF WSPR Signal received by: EA8BFK 

Islas Canarias, Canary Islands, Spain

Distance: 15291km

Grid location: IL38bo

dBm: 37

WSPR data has been graphed using Excel. Horizontal axis = UTC Time, Vertical axis = dB below the noise floor.

Antenna:  Sloper Antenna:  Sloper Antenna  -  40 & 15m Bands with T-Match tuner  

                 Doublet Antenna: Multi-band dipole with T-Match tuner and 4-1 Current Balun 

                 L Antenna:           L Antenna with T-Match tuner  

VK6YSF WSPR Signal received by: VK2CPR 

ALBURY, NSW, Australia

Distance: 2825 km

Grid location: QF33lw

dBm: 37

WSPR data has been graphed using Excel. Horizontal axis = UTC Time, Vertical axis = dB below the noise floor.

Antenna:  Sloper Antenna:  Sloper Antenna  -  40 & 15m Bands with T-Match tuner  

                 Doublet Antenna: Multi-band dipole with T-Match tuner and 4-1 Current Balun 

                 L Antenna:           L Antenna with T-Match tuner  

VK6YSF WSPR Signal received by: VK5MR 

Roxby Downs, SA Australia

Distance: 2825 km

Grid location: QF33lw

dBm: 37

WSPR data has been graphed using Excel. Horizontal axis = UTC Time, Vertical axis = dB below the noise floor.

Antenna:  Sloper Antenna:  Sloper Antenna  -  40 & 15m Bands with T-Match tuner  

                 Doublet Antenna: Multi-band dipole with T-Match tuner and 4-1 Current Balun 

                 L Antenna:           L Antenna with T-Match tuner  

VK6PK WSPR Signal received by: VK6YSF

WOOROLOO, WA, AUSTRALIA

Distance: 37 km

Grid location: OF88ee

dBm: 37

WSPR data has been graphed using Excel. Horizontal axis = UTC Time, Vertical axis = dB below the noise floor.

Antenna:  Sloper Antenna:  Sloper Antenna  -  40 & 15m Bands with T-Match tuner  

                 Doublet Antenna: Multi-band dipole with T-Match tuner and 4-1 Current Balun 

                 L Antenna:           L Antenna with T-Match tuner  

VU3KAZ WSPR Signal received by: VK6YSF

Bangalore, India

Distance: 6467 km

Grid location: MK82tu

dBm: 37

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Page last revised 05 May, 2025