WSPR 13m (10.10 - 10.15 MHz) band activity data recorded for 3 x  24 hour period from 22/03/2017 to 25/03/2017

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

WSPR Frequency: Dial 10.1387 MHz USB (occupied bandwidth 10.1401 - 10.1403 MHz)

Grid location: OF88II

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

Transmission Power 37 dBm (5Watts)

SSN (Sun Spot Number): 23

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

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

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

                L Antenna:          L Antenna with T-Match tuner  

This exercise was to compare the L antenna and 40m Sloper with the main station antenna used for operations on the 30m amateur band.

Conclusion is that there is no compelling performance deference between the Antennas however the 40 Sloper showed a modest advantage for paths into North America.

WSPR 30m band activity data recorded for a 24 hour period from 22/03/2017 to 25/03/2017 showing SNR against UTC time, Vertical axis = dB below the noise floor. 

WSPR 30m band activity data recorded for a 24 hour period from 22/03/2017 to 25/03/2017 showing distance in km against UTC time.

Vertical axis = km

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

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

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

               L Antenna:          L Antenna with T-Match tuner  

BV0NCU  Graduate Institute of Space Scienc, National Central University
No. 300, Zhongda Rd, Zhongli District, Taoyuan, TY 32001
Taiwan - RECEIVED BY VK6YSF 

Distance: 6315km

Grid location: PL04ox  

dBm: 40

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

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

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

               L Antenna:          L Antenna with T-Match tuner  

JA5NVN - TOKUSHIMA-PREF, Japan - RECEIVED BY VK6YSF 

Distance: 7542km

Grid location: PM74ec  

dBm: 33

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

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

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

               L Antenna:          L Antenna with T-Match tuner  

JG1EIQ -KOBE, Japan   - RECEIVED BY VK6YSF 

Distance: 7632km

Grid location: PM74ns  

dBm: 27

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

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

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

               L Antenna:          L Antenna with T-Match tuner  

KD6RF - TX, USA  - RECEIVED BY VK6YSF 

Distance: 17033km

Grid location: EM22lm   

dBm: 37

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

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

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

               L Antenna:          L Antenna with T-Match tuner  

KD7DMP - WA, USA - RECEIVED BY VK6YSF 

Distance: 15186km

Grid location: DN17kq    

dBm: 37

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

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

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

               L Antenna:          L Antenna with T-Match tuner  

N7ROJ NV USA - RECEIVED BY VK6YSF 

Distance: 14914km

Grid location: DM09cl     

dBm: 37

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

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

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

               L Antenna:          L Antenna with T-Match tuner  

VK2GZZ Sydney NSW, Australia - RECEIVED BY VK6YSF 

Distance: 3171km

Grid location: QF56hn      

dBm: 25

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

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

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

               L Antenna:          L Antenna with T-Match tuner  

VK3AFE Victoria Australia - RECEIVED BY VK6YSF 

Distance: 2659km

Grid location: QF22lf      

dBm: 23

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

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

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

               L Antenna:          L Antenna with T-Match tuner  

VK3CBV Victoria Australia - RECEIVED BY VK6YSF 

Distance: 2706km

Grid location: QF22ra      

dBm: 23

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

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

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

               L Antenna:          L Antenna with T-Match tuner  

VK6PK WOOROLOO, WA Australia - RECEIVED BY VK6YSF 

Distance: 37km

Grid location: OF88ee     

dBm: 37

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

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

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

               L Antenna:          L Antenna with T-Match tuner  

ZL4EI Whangarei New Zealand - RECEIVED BY VK6YSF 

Distance: 5266km

Grid location: RF74ci     

dBm: 30

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

VK6YSF WSPR Signal received by: BV0NCU 

Graduate Institute of Space Scienc, National Central University
No. 300, Zhongda Rd, Zhongli District, Taoyuan, TY 32001
Taiwan

Distance: 6315km

Grid location:PL04ox

dBm: 37

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

VK6YSF WSPR Signal received by: EA8BFK Islas Canarias, 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.

VK6YSF WSPR Signal received by: JA5NVN TOKUSHIMA-PREF Japan

Distance: 7542km

Grid location:PM74ec 

dBm: 37

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

VK6YSF WSPR Signal received by: JQ2WDO Fujinomiya-shi, Sizuoka Pref. Japan

Distance: 7791km

Grid location:PM95gi  

dBm: 37

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

VK6YSF WSPR Signal received by: K1BZ/3 MD USA

Distance: 18528km

Grid location:FM19ne   

dBm: 37

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

VK6YSF WSPR Signal received by: K5XL  TX USA

Distance: 16841km

Grid location:EM12kp 

dBm: 37

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

VK6YSF WSPR Signal received by: K9AN  URBANA, IL USA

Distance: 17598km

Grid location:EN50wc 

dBm: 37

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

VK6YSF WSPR Signal received by: KD6RF  GILMER, TX USA

Distance: 17033km

Grid location:EM22 

dBm: 37

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

VK6YSF WSPR Signal received by: KU4A  KY USA

Distance: 10698km

Grid location:EM38 

dBm: 37

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

VK6YSF WSPR Signal received by: PI9ESA  Netherlands

Distance: 14204km

Grid location:JO22fd 

dBm: 37

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

VK6YSF WSPR Signal received by: SM0EPX/RX2   

Distance: 13495km

Grid location:JO89si  

dBm: 37

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

VK6YSF WSPR Signal received by: VE6JY  AB Canada

Distance: 15411km

Grid location:DO33or  

dBm: 37

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

VK6YSF WSPR Signal received by: VK2CCR  NSW Australia

Distance: 3232km

Grid location:QF56pl 

dBm: 37

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

VK6YSF WSPR Signal received by: VK3AXF  Victoria Australia

Distance: 2781km

Grid location:QF33fn 

dBm: 37

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

VK6YSF WSPR Signal received by: VK5MR  South Australia

Distance: 1921km

Grid location:PF89kk 

dBm: 37

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

VK6YSF WSPR Signal received by: VK6PK WOOROLOO, WA Australia  

Distance: 37km

Grid location:QF22lf 

dBm: 37

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

VK6YSF WSPR Signal received by: VK7DD Tasmania Australia  

Distance: 2877km

Grid location:QE38il 

dBm: 37

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

VK6YSF WSPR Signal received by: WJ1I   MA USA

Distance: 18722km

Grid location:FN41

dBm: 37

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Page last revised 27 January, 2026