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WSPR - 160m BAND - 26/06/2018 ~ 30/06/2018
WSPR 160m (1.80 - 1.87MHz) band activity data recorded for a 4 day period 26/06/2018 ~ 30/06/2018
Data from the WSPR web site relating to monitoring from VK6YSF Northam Western Australia.

WSPR Frequency: Dial 1.8366MHz USB (occupied bandwidth 1.8380 - 1.8382 MHz)

Grid location: OF88II

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

RX and TX

SSN (Sun Spot Number): 0

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

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

Antenna#2: 'T" Antenna configuration with T-Match tuner

 

This exercise was to compare the Multi-band dipole antenna with the same antenna configured as a T Antenna used for operations on the 160m amateur band.

The main HF antenna is an All Band Doublet feed with ladder line and matched with a T-Match antenna tuner including a 1:4 current balun giving access to all HF band including the 160m band. With a view to get better performance particularly on lower frequency bands this antenna was reconfigured as a type of Marconi T Antenna by simple bonding the ladder line in the shack and connecting directly to the T-Match antenna tuner.

This antenna requires a counterpoise to work well and this will achieved at least initially by using the galvanized building roof to serve this purpose.  

 

Conclusion

While the Marconi T Antenna configuration has clear advantages over relatively long distance communication within the 160m band when compared to the All Band Doublet. The Marconi T Antenna as I currently have it configured is prone to much greater noise making it worse as a receive antenna when compared to the All Band Doublet.

 

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

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

Antenna#2: 'T" Antenna configuration with T-Match tuner

VK6YSF WSPR Signal received by: VK2KRR The Rock, NSW Australia

Distance: 2832km

Grid location: QF34mr    

dBm: 37 (5 Watts)

 

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

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

Antenna#2: 'T" Antenna configuration with T-Match tuner

VK6YSF WSPR Signal received by: VK5MR South Australia

Distance: 1921km

Grid location: PF89kk     

dBm: 37 (5 Watts)

 

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

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

Antenna#2: 'T" Antenna configuration with T-Match tuner

VK6YSF WSPR Signal received by: VK5PJ South Australia

Distance: 2101km

Grid location: PF95mk     

dBm: 37 (5 Watts)

 

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

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

Antenna#2: 'T" Antenna configuration with T-Match tuner

VK6YSF WSPR Signal received by: VK6HP West Australia

Distance: 91km

Grid location: OF77ww      

dBm: 37 (5 Watts)

 

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

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

Antenna#2: 'T" Antenna configuration with T-Match tuner

RECEIVED: VK2EFM

Distance: 3233km

Grid location: QF56pn       

dBm: 37 (5 Watts)

 

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

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

Antenna#2: 'T" Antenna configuration with T-Match tuner

RECEIVED: VK6HP

Distance: 91km

Grid location: OF77ww        

dBm: 40 (10 Watts)

 

  

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Page last revised 04 July 2018  
 

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