Study Group Station Antennas

VHF/UHF WSPR - Station Antennas


The KC6KGE station antenna in Taft, California. Cushcraft A144-11 Yagi 20 feet with 15.3 dBi gain. Effective isotropic radiated power: 526 watts (57 dBm)

The KC6KGE station antenna in Taft, California. 
Cushcraft A144-11 Yagi at 20 feet with 15.3 dBi gain.
Effective isotropic radiated power: 526 watts (57 dBm)


The KI6STW station antenna in Milpitas, California. Two stacked M2 HO loops at 20 feet with 10.14 dBi gain. Effective isotropic radiated power: 62 watts (48 dBm)

The KI6STW station antenna in Milpitas, California. 
Two stacked M2 HO loops
at 20 feet with 10.14 dBi gain.
Effective isotropic radiated power: 62 watts (48 dBm)


The antenna at station KP4MD in Citrus Heights, CA.  Two stacked halos at 14 feet and 18 feet with 7.88 dBi theoretical gain.

The KP4MD station antennas in Citrus Heights, California. 
Two stacked halos
at 14 feet and 18 feet with 7.88 dBi theoretical gain.  Effective isotropic radiated power: 212 watts (53 dBm).
5 element 432 MHz Yagi with 10 dBi gain (not shown).  Effective isotropic radiated power: 315 watts (55 dBm).


The K6PZB station antenna in Graton, California. Cushcraft 13B2 13 element yagi at 20 feet with 18 dBi theoretical gain. Effective isotropic radiated power: 2,877 watts (65 dBm).

The K6PZB station antenna in Graton, California. Cushcraft A13B2 13 element Yagi at 20 feet with 15.8 dBi theoretical gain. Effective isotropic radiated power: 1,734 watts (62 dBm).


The KE6GLA station antenna in El Dorado Hills, California. M2 EB-144 Eggbeater at 30 feet with 6 dBi theoretical gain. Effective isotropic radiated power: 32 watts (45 dBm).

The KE6GLA station antenna in El Dorado Hills, California. M2 EB-144 Eggbeater (at left) at 30 feet with 6 dBi theoretical gain. Effective isotropic radiated power: 32 watts (45 dBm).


The N6GN station antenna in Santa Rosa, California. 4 element Yagi (at right) at 20 feet with 10 dBi gain. Effective isotropic radiated power: 40 watts (46 dBm).

The N6GN station antennas in Santa Rosa, California. 4 element 144 MHz Yagi (at right) at 20 feet with 9 dBi gain. Effective isotropic radiated power: 40 watts (46 dBm). 
6 element 432 MHz Yagi (at left) 10.2 dB gain.  Effective isotropic radiated power: 315 watts (55 dBm).


The WA6LIE station antenna in Salinas, California. Cushcraft 13B2 13 element yagi at 40 feet with 18 dBi theoretical gain. Effective isotropic radiated power: 380 watts (56 dBm).

The WA6LIE station antenna in Salinas, California. Cushcraft A13B2 13 element Yagi at 40 feet with 15.8 dBi theoretical gain. Effective isotropic radiated power: 380 watts (56 dBm).


The KD6RF station antenna in Livermore, California. VTenn UltraWide Band Vivaldi at 22 feet with 6.5 dBi gain at 144 MHz. Effective isotropic radiated power: 89 Watts (50 dBm). Above it is an Arrow 4 element 144 MHz Yagi antenna.

The KD6RF station antenna in Livermore, California. VTenn UltraWide Band Vivaldi at 22 feet with 6.5 dBi gain at 144 MHz. Effective isotropic radiated power: 89 Watts (50 dBm).
Above it is an Arrow 4 element 144 MHz Yagi antenna.


World Wide 2 meter WSPR daily spot report activity has increased 100-fold since this study commenced in June 2012.

VHF/UHF WSPR Study Station Data

VHF/UHF WSPR Study Group

*EIRP = Effective isotropic radiated power

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