WSPR 40m (7.0 - 7.3 MHz) band activity data recorded for 8 x 24 hour periods on 24~30/07/2017 and 31/07/2017~05/08/2017

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

WSPR Frequency: Dial 7.0386 MHz USB (occupied bandwidth 7.0400 - 7.0402 MHz)

Grid location: OF88II

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

Receive and transmit

SSN (Sun Spot Number): 42

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

Antenna:  Antenna#1 Sloper Antenna  -  40 & 15m Bands with T-Match tuner  

               Antenna#2 Multi-band dipole with T-Match tuner and 4-1 Current Balun 

This exercise was to compare the 40/15m band sloper antenna with the main station antenna used for operations on the 40m amateur band.

WSPR 40m band activity data recorded for 10 x 24 hour period on the 24~30/07/2017 and 31/07/2017~05/08/2017showing SNR against UTC time, Vertical axis = dB below the noise floor. 

Antenna#1 Sloper Antenna  -  40 & 15m Bands with T-Match tuner  

Antenna#2 Multi-band dipole with T-Match tuner and 4-1 Current Balun 

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

Antenna#1 Sloper Antenna  -  40 & 15m Bands with T-Match tuner  

Antenna#2 Multi-band dipole with T-Match tuner and 4-1 Current Balun 

3B8CW  Mauritius - RECEIVED BY VK6YSF 

Distance: 5990km

Grid location: LG89sx

dBm: 37

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

Antenna#1 Sloper Antenna  -  40 & 15m Bands with T-Match tuner  

Antenna#2 Multi-band dipole with T-Match tuner and 4-1 Current Balun 

9K2/VO1DZA Kuwait - RECEIVED BY VK6YSF 

Distance: 9903km

Grid location: LL49bc

dBm: 33

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

Antenna#1 Sloper Antenna  -  40 & 15m Bands with T-Match tuner  

Antenna#2 Multi-band dipole with T-Match tuner and 4-1 Current Balun 

AI6VN Berkeley, California USA - RECEIVED BY VK6YSF 

Distance: 14769km

Grid location: CM97

dBm: 23

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

Antenna#1 Sloper Antenna  -  40 & 15m Bands with T-Match tuner  

Antenna#2 Multi-band dipole with T-Match tuner and 4-1 Current Balun 

CF6TDG AB Canada - RECEIVED BY VK6YSF 

Distance: 15384km

Grid location: DO31aa

dBm: 37

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

Antenna#1 Sloper Antenna  -  40 & 15m Bands with T-Match tuner  

Antenna#2 Multi-band dipole with T-Match tuner and 4-1 Current Balun 

DH5RAE  Spiegelau Germany - RECEIVED BY VK6YSF 

Distance: 13525km

Grid location: JN68qv

dBm: 33

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

Antenna#1 Sloper Antenna  -  40 & 15m Bands with T-Match tuner  

Antenna#2 Multi-band dipole with T-Match tuner and 4-1 Current Balun 

DK8JP Neukirchen-Vluyn Germany - RECEIVED BY VK6YSF 

Distance: 14053km

Grid location: JO31gk

dBm: 30

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

Antenna#1 Sloper Antenna  -  40 & 15m Bands with T-Match tuner  

Antenna#2 Multi-band dipole with T-Match tuner and 4-1 Current Balun 

DL5RBD Viechtach Germany - RECEIVED BY VK6YSF 

Distance: 13564km

Grid location: JN69kb

dBm: 37

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

Antenna#1 Sloper Antenna  -  40 & 15m Bands with T-Match tuner  

Antenna#2 Multi-band dipole with T-Match tuner and 4-1 Current Balun 

FR1GZ LA MONTAGNE Reunion - RECEIVED BY VK6YSF 

Distance: 6146km

Grid location: LG79rc

dBm: 37

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

Antenna#1 Sloper Antenna  -  40 & 15m Bands with T-Match tuner  

Antenna#2 Multi-band dipole with T-Match tuner and 4-1 Current Balun 

HA0MDA Debrecen Hungary - RECEIVED BY VK6YSF 

Distance: 13051km

Grid location: JN80cq

dBm: 37

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

Antenna#1 Sloper Antenna  -  40 & 15m Bands with T-Match tuner  

Antenna#2 Multi-band dipole with T-Match tuner and 4-1 Current Balun 

JA5NVN 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#1 Sloper Antenna  -  40 & 15m Bands with T-Match tuner  

Antenna#2 Multi-band dipole with T-Match tuner and 4-1 Current Balun 

JA5NVN Japan - TRANSMISSION BY VK6YSF 

Distance: 7542km

Grid location: PM74ec

dBm: 37 (5W)

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

Antenna#1 Sloper Antenna  -  40 & 15m Bands with T-Match tuner  

Antenna#2 Multi-band dipole with T-Match tuner and 4-1 Current Balun 

JA8INU Sapporo Hokkaido Japan - RECEIVED BY VK6YSF 

Distance: 8675km

Grid location: QN03qa

dBm: 20

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

Antenna#1 Sloper Antenna  -  40 & 15m Bands with T-Match tuner  

Antenna#2 Multi-band dipole with T-Match tuner and 4-1 Current Balun 

JG1EIQ  KOBE Japan - RECEIVED BY VK6YSF 

Distance: 7632km

Grid location: PM74ns

dBm: 30

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

Antenna#1 Sloper Antenna  -  40 & 15m Bands with T-Match tuner  

Antenna#2 Multi-band dipole with T-Match tuner and 4-1 Current Balun 

K3EA  YARDLEY, PA USA - RECEIVED BY VK6YSF 

Distance: 18609km

Grid location: FN20of

dBm: 30

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

Antenna#1 Sloper Antenna  -  40 & 15m Bands with T-Match tuner  

Antenna#2 Multi-band dipole with T-Match tuner and 4-1 Current Balun 

K7MHI  SNOQUALMIE, WA USA - TRANSMISSION BY VK6YSF 

Distance: 14810km

Grid location: CN87wk

dBm: 37 (5W)

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

Antenna#1 Sloper Antenna  -  40 & 15m Bands with T-Match tuner  

Antenna#2 Multi-band dipole with T-Match tuner and 4-1 Current Balun 

K9AN URBANA, IL USA - TRANSMISSION BY VK6YSF 

Distance: 17598km

Grid location: EN50wc

dBm: 37 (5W)

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

Antenna#1 Sloper Antenna  -  40 & 15m Bands with T-Match tuner  

Antenna#2 Multi-band dipole with T-Match tuner and 4-1 Current Balun 

KB2SVD Titusville, NJ USA - RECEIVED BY VK6YSF 

Distance: 18598km

Grid location: FN20nh

dBm: 37

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

Antenna#1 Sloper Antenna  -  40 & 15m Bands with T-Match tuner  

Antenna#2 Multi-band dipole with T-Match tuner and 4-1 Current Balun 

KB7GF COLLEGE PLACE, WA USA - TRANSMISSION BY VK6YSF 

Distance: 15091km

Grid location: DN06ta

dBm: 37 (5W)

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

Antenna#1 Sloper Antenna  -  40 & 15m Bands with T-Match tuner  

Antenna#2 Multi-band dipole with T-Match tuner and 4-1 Current Balun 

KC4RSN OPELIKA, AL USA - TRANSMISSION BY VK6YSF 

Distance: 17937km

Grid location: EM72hp

dBm: 37 (5W)

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

Antenna#1 Sloper Antenna  -  40 & 15m Bands with T-Match tuner  

Antenna#2 Multi-band dipole with T-Match tuner and 4-1 Current Balun 

KD6RF  GILMER, 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#1 Sloper Antenna  -  40 & 15m Bands with T-Match tuner  

Antenna#2 Multi-band dipole with T-Match tuner and 4-1 Current Balun 

KG5THG De Leon, TX USA - TRANSMISSION BY VK6YSF 

Distance: 10363km

Grid location: EM02oc

dBm: 37 (5W)

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

Antenna#1 Sloper Antenna  -  40 & 15m Bands with T-Match tuner  

Antenna#2 Multi-band dipole with T-Match tuner and 4-1 Current Balun 

KP4MD  ROSEVILLE, CA USA - RECEIVED BY VK6YSF 

Distance: 14772km

Grid location: CM98iq

dBm: 37

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

Antenna#1 Sloper Antenna  -  40 & 15m Bands with T-Match tuner  

Antenna#2 Multi-band dipole with T-Match tuner and 4-1 Current Balun 

M0RTP Warfield England - RECEIVED BY VK6YSF 

Distance: 14554km

Grid location: IO91pk

dBm: 37

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

Antenna#1 Sloper Antenna  -  40 & 15m Bands with T-Match tuner  

Antenna#2 Multi-band dipole with T-Match tuner and 4-1 Current Balun 

N5CEY Los Fresnos, TX USA - TRANSMISSION BY VK6YSF 

Distance: 16855km

Grid location: EL26gq

dBm: 37 (5W)

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

Antenna#1 Sloper Antenna  -  40 & 15m Bands with T-Match tuner  

Antenna#2 Multi-band dipole with T-Match tuner and 4-1 Current Balun 

NN6RF EL CERRITO, CA USA - TRANSMISSION BY VK6YSF 

Distance: 14671km

Grid location: CM87uw

dBm: 37 (5W)

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

Antenna#1 Sloper Antenna  -  40 & 15m Bands with T-Match tuner  

Antenna#2 Multi-band dipole with T-Match tuner and 4-1 Current Balun 

ON7KO VRASENE Belgium - RECEIVED BY VK6YSF 

Distance: 14212km

Grid location: JO21cepk

dBm: 37

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

Antenna#1 Sloper Antenna  -  40 & 15m Bands with T-Match tuner  

Antenna#2 Multi-band dipole with T-Match tuner and 4-1 Current Balun 

PI4TX Netherlands - RECEIVED BY VK6YSF 

Distance: 14186km

Grid location: JO22jp

dBm: 37

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

Antenna#1 Sloper Antenna  -  40 & 15m Bands with T-Match tuner  

Antenna#2 Multi-band dipole with T-Match tuner and 4-1 Current Balun 

RX3QFM Voronezh Russia - RECEIVED BY VK6YSF 

Distance: 11927km

Grid location: KO91oo

dBm: 37

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

Antenna#1 Sloper Antenna  -  40 & 15m Bands with T-Match tuner  

Antenna#2 Multi-band dipole with T-Match tuner and 4-1 Current Balun 

TA4/G8SCU  Alanya Turkey - RECEIVED BY VK6YSF 

Distance: 11694km

Grid location: KM56ov

dBm: 37

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

Antenna#1 Sloper Antenna  -  40 & 15m Bands with T-Match tuner  

Antenna#2 Multi-band dipole with T-Match tuner and 4-1 Current Balun 

V53ARC  Namibia - RECEIVED BY VK6YSF 

Distance: 9575km

Grid location: JG87

dBm: 30

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

Antenna#1 Sloper Antenna  -  40 & 15m Bands with T-Match tuner  

Antenna#2 Multi-band dipole with T-Match tuner and 4-1 Current Balun 

VK1JAM Fraser ACT Australia - RECEIVED BY VK6YSF 

Distance: 3013km

Grid location: QF44mt

dBm: 23

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

Antenna#1 Sloper Antenna  -  40 & 15m Bands with T-Match tuner  

Antenna#2 Multi-band dipole with T-Match tuner and 4-1 Current Balun 

VK1UN ACT Australia - RECEIVED BY VK6YSF 

Distance: 2659km

Grid location: QF22lf

dBm: 30

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

Antenna#1 Sloper Antenna  -  40 & 15m Bands with T-Match tuner  

Antenna#2 Multi-band dipole with T-Match tuner and 4-1 Current Balun 

VK2OMD  Bowral, NSW Australia - RECEIVED BY VK6YSF 

Distance: 3146km

Grid location: QF55fm

dBm: 37

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

Antenna#1 Sloper Antenna  -  40 & 15m Bands with T-Match tuner  

Antenna#2 Multi-band dipole with T-Match tuner and 4-1 Current Balun 

VK3DXE Seaford VIC Australia - RECEIVED BY VK6YSF 

Distance: 2678km

Grid location: QF21nv

dBm: 37

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

Antenna#1 Sloper Antenna  -  40 & 15m Bands with T-Match tuner  

Antenna#2 Multi-band dipole with T-Match tuner and 4-1 Current Balun 

VK4NE ROCHEDALE, QLD Australia - RECEIVED BY VK6YSF 

Distance: 3532km

Grid location: QG62nj

dBm: 37

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

Antenna#1 Sloper Antenna  -  40 & 15m Bands with T-Match tuner  

Antenna#2 Multi-band dipole with T-Match tuner and 4-1 Current Balun 

VK5EI PARAFIELD GARDENS, SA Australia - RECEIVED BY VK6YSF 

Distance: 2057km

Grid location: PF95gd

dBm: 27

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

Antenna#1 Sloper Antenna  -  40 & 15m Bands with T-Match tuner  

Antenna#2 Multi-band dipole with T-Match tuner and 4-1 Current Balun 

VK5LA BERRI, SA Australia - RECEIVED BY VK6YSF 

Distance: 2238km

Grid location: QF05gq

dBm: 37

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

Antenna#1 Sloper Antenna  -  40 & 15m Bands with T-Match tuner  

Antenna#2 Multi-band dipole with T-Match tuner and 4-1 Current Balun 

VK6JB Kalgoorlie, WA Australia - RECEIVED BY VK6YSF 

Distance: 463km

Grid location: PF09rg

dBm: 27

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

Antenna#1 Sloper Antenna  -  40 & 15m Bands with T-Match tuner  

Antenna#2 Multi-band dipole with T-Match tuner and 4-1 Current Balun 

VK7DD EXTON, Tasmania Australia - RECEIVED BY VK6YSF 

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. 

Antenna#1 Sloper Antenna  -  40 & 15m Bands with T-Match tuner  

Antenna#2 Multi-band dipole with T-Match tuner and 4-1 Current Balun 

VU2LID TRIVANDRUM, KL India - RECEIVED BY VK6YSF 

Distance: 6147km

Grid location: MJ88lm

dBm: 37

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

Antenna#1 Sloper Antenna  -  40 & 15m Bands with T-Match tuner             dBm: 30

Antenna#2 Multi-band dipole with T-Match tuner and 4-1 Current Balun       dBm: 37

VU3KAZ Bangalore India - RECEIVED BY VK6YSF 

Distance: 6467km

Grid location: MK82tu

dBm: 30 & 37

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

Antenna#1 Sloper Antenna  -  40 & 15m Bands with T-Match tuner     

Antenna#2 Multi-band dipole with T-Match tuner and 4-1 Current Balun 

W3IH Truth or Conseq, NM USA - RECEIVED BY VK6YSF 

Distance: 15910km

Grid location: DM63ic

dBm: 37

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

Antenna#1 Sloper Antenna  -  40 & 15m Bands with T-Match tuner     

Antenna#2 Multi-band dipole with T-Match tuner and 4-1 Current Balun 

W4MO  Venice, FL USA- RECEIVED BY VK6YSF 

Distance: 18104km

Grid location: EL86ux

dBm: 37

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

Antenna#1 Sloper Antenna  -  40 & 15m Bands with T-Match tuner     

Antenna#2 Multi-band dipole with T-Match tuner and 4-1 Current Balun 

W7REK Marana, AZ USA - RECEIVED BY VK6YSF 

Distance: 15552km

Grid location: DM42lk

dBm: 27

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

Antenna#1 Sloper Antenna  -  40 & 15m Bands with T-Match tuner     

Antenna#2 Multi-band dipole with T-Match tuner and 4-1 Current Balun 

WA9EIC DANVILLE, IL USA - RECEIVED BY VK6YSF 

Distance: 17638km

Grid location: EN60ed

dBm: 37

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

Antenna#1 Sloper Antenna  -  40 & 15m Bands with T-Match tuner     

Antenna#2 Multi-band dipole with T-Match tuner and 4-1 Current Balun 

WD6DFH EUGENE, OR USA - RECEIVED BY VK6YSF 

Distance: 14716km

Grid location: CN84

dBm: 30

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

Antenna#1 Sloper Antenna  -  40 & 15m Bands with T-Match tuner     

Antenna#2 Multi-band dipole with T-Match tuner and 4-1 Current Balun 

YB0Z Jakarta Indonesia - RECEIVED BY VK6YSF 

Distance: 2940km

Grid location: OI33tj

dBm: 33

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

Antenna#1 Sloper Antenna  -  40 & 15m Bands with T-Match tuner     

Antenna#2 Multi-band dipole with T-Match tuner and 4-1 Current Balun 

ZL3PX  CHRISTCHURCH New Zealand - RECEIVED BY VK6YSF 

Distance: 5003km

Grid location: RE66hm

dBm: 47

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

Antenna#1 Sloper Antenna  -  40 & 15m Bands with T-Match tuner     

Antenna#2 Multi-band dipole with T-Match tuner and 4-1 Current Balun 

ZS6GL Randburg South Africa - RECEIVED BY VK6YSF 

Distance: 8414km

Grid location: KG33xv

dBm: 23

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

Antenna#1 Sloper Antenna  -  40 & 15m Bands with T-Match tuner     

Antenna#2 Multi-band dipole with T-Match tuner and 4-1 Current Balun 

ZS6GOO  Gauteng South Africa - RECEIVED BY VK6YSF 

Distance: 8416km

Grid location: KG33xw

dBm: 23

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Page last revised 27 January, 2026