Dipole vs EH Antenna, Comparative Testing using WSPR and Two Radios

Two radios transmitting simultaneously, one exciting a 'reference' antenna and another a test antenna using two different freqs to differentiate the results at the spotting stations.

Ref Ant - A dipole center at about 30', dipole is horizontal
Test Ant - An EH Antenna, center line about 25 feet, EH antenna oriented vertically.

Quick webpage with more info: http://www.qsl.net/w/wb5wpa//EHantenna/EH_Mark_2_Vert/

Notes:
(1) The EH Antenna is fed via a coupling loop (Link coupled) near the EH "Tuning coil" and is not directly connected as normally depicted on most websites.
(2) The low frequency radio was on the EH antenna, the higher freq radio was on the dipole antenna
.
Update 6-11-2013: More plots of SNR of the Dipole vs the EH Antenna at various stations:
(1) Plot of 40m WSPR snr at K9AN ........ (2) Plot of 40m WSPR snr at W4DJW
(3) Plot of 40m WSPR snr at WB2EEE .. (4) Plot of 40m WSPR snr at F1VMV
(5) Plot of 40m WSPR snr at K7TSW ..... (6) Plot of 40m WSPR snr at VE6PDQ

This is the really wild one; notice how the EH still holds the path whereas the dipole has died away:
(7) Plot of 40m WSPR snr at AK4UR 1691 km at 64 deg.
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. . Timestamp .......Call.........MHz.......SNR Dft Grid . Pwr Reportr RGrid . km . .az
2013-05-31 02:18 WB5WPA 7.040058 -22 0 EM13qc 5 VE6PDQ DO33fl 2632 334
2013-05-31 02:18 WB5WPA 7.040151 -18 0 EM13qc 5 VE6PDQ DO33fl 2632 334

2013-05-31 02:18 WB5WPA 7.040056 -19 0 EM13qc 5 K9AN EN50wc 1086 42
2013-05-31 02:18 WB5WPA 7.040150 -14 0 EM13qc 5 K9AN EN50wc 1086 42

2013-05-31 02:18 WB5WPA 7.040060 -13 0 EM13qc 5 KE7A EM12kx 49 254
2013-05-31 02:18 WB5WPA 7.040153 -3 0 EM13qc 5 KE7A EM12kx 49 254

2013-05-31 02:18 WB5WPA 7.040162 -28 0 EM13qc 5 M0INB IO93br 7391 40

2013-05-31 02:18 WB5WPA 7.040049 -19 0 EM13qc 5 K7UEB DN06tb 2343 314
2013-05-31 02:18 WB5WPA 7.040142 -16 0 EM13qc 5 K7UEB DN06tb 2343 314

2013-05-31 02:18 WB5WPA 7.040153 -21 0 EM13qc 5 DK6UG JN49cm 8225 41

2013-05-31 02:18 WB5WPA 7.040057 -20 0 EM13qc 5 AC0ZL DM79oq 1034 317
2013-05-31 02:18 WB5WPA 7.040151 -16 0 EM13qc 5 AC0ZL DM79oq 1034 317

2013-05-31 02:18 WB5WPA 7.040153 -20 1 EM13qc 5 PI4THT JO32kf 7986 39

2013-05-31 02:16 WB5WPA 7.040055 -19 1 EM13qc 5 K9AN EN50wc 1086 42
2013-05-31 02:16 WB5WPA 7.040150 -13 0 EM13qc 5 K9AN EN50wc 1086 42

2013-05-31 02:16 WB5WPA 7.040058 -22 0 EM13qc 5 DK6UG JN49cm 8225 41
2013-05-31 02:16 WB5WPA 7.040153 -21 0 EM13qc 5 DK6UG JN49cm 8225 41

2013-05-31 02:16 WB5WPA 7.040033 -24 0 EM13qc 5 DL6ZBN JO40ee 8195 40
2013-05-31 02:16 WB5WPA 7.040127 -23 -1 EM13qc 5 DL6ZBN JO40ee 8195 40

2013-05-31 02:16 WB5WPA 7.040048 -19 1 EM13qc 5 K7UEB DN06tb 2343 314
2013-05-31 02:16 WB5WPA 7.040142 -16 0 EM13qc 5 K7UEB DN06tb 2343 314

2013-05-31 02:16 WB5WPA 7.040056 -22 0 EM13qc 5 AC0ZL DM79oq 1034 317
2013-05-31 02:16 WB5WPA 7.040151 -16 0 EM13qc 5 AC0ZL DM79oq 1034 317

2013-05-31 02:16 WB5WPA 7.040059 -23 0 EM13qc 5 PI4THT JO32kf 7986 39
2013-05-31 02:16 WB5WPA 7.040153 -20 0 EM13qc 5 PI4THT JO32kf 7986 39

2013-05-31 02:16 WB5WPA 7.040061 -13 1 EM13qc 5 KH6IDF DM33wr 1439 277
2013-05-31 02:16 WB5WPA 7.040156 -5 0 EM13qc 5 KH6IDF DM33wr 1439 277

2013-05-31 02:16 WB5WPA 7.040058 -22 0 EM13qc 5 VE6PDQ DO33fl 2632 334
2013-05-31 02:16 WB5WPA 7.040151 -18 0 EM13qc 5 VE6PDQ DO33fl 2632 334

2013-05-31 02:06 WB5WPA 7.040027 -18 1 EM13qc 5 K9AN EN50wc 1086 42
2013-05-31 02:06 WB5WPA 7.040150 -10 0 EM13qc 5 K9AN EN50wc 1086 42

2013-05-31 02:06 WB5WPA 7.040030 -26 0 EM13qc 5 DK6UG JN49cm 8225 41
2013-05-31 02:06 WB5WPA 7.040153 -22 0 EM13qc 5 DK6UG JN49cm 8225 41

2013-05-31 02:06 WB5WPA 7.040027 -13 1 EM13qc 5 W4MO EL87 1445 112
2013-05-31 02:06 WB5WPA 7.040151 -7 0 EM13qc 5 W4MO EL87 1445 112

2013-05-31 02:06 WB5WPA 7.040129 -24 -1 EM13qc 5 DL6ZBN JO40ee 8195 40

2013-05-31 02:06 WB5WPA 7.040027 -23 0 EM13qc 5 AC0ZL DM79oq 1034 317
2013-05-31 02:06 WB5WPA 7.040151 -16 0 EM13qc 5 AC0ZL DM79oq 1034 317

2013-05-31 02:06 WB5WPA 7.040032 -13 0 EM13qc 5 KH6IDF DM33wr 1439 277
2013-05-31 02:06 WB5WPA 7.040155 -6 0 EM13qc 5 KH6IDF DM33wr 1439 277

2013-05-31 02:06 WB5WPA 7.040043 -14 0 EM13qc 5 K4EH EM73 1077 85
2013-05-31 02:06 WB5WPA 7.040166 -7 0 EM13qc 5 K4EH EM73 1077 85

2013-05-31 02:06 WB5WPA 7.040029 -24 0 EM13qc 5 VE6PDQ DO33fl 2632 334
2013-05-31 02:06 WB5WPA 7.040151 -21 0 EM13qc 5 VE6PDQ DO33fl 2632 334

2013-05-31 02:06 WB5WPA 7.040027 -12 0 EM13qc 5 AG0T EN33su 1249 16
2013-05-31 02:06 WB5WPA 7.040149 -10 0 EM13qc 5 AG0T EN33su 1249 16

2013-05-31 02:06 WB5WPA 7.040019 -22 0 EM13qc 5 K7UEB DN06tb 2343 314
2013-05-31 02:06 WB5WPA 7.040142 -18 0 EM13qc 5 K7UEB DN06tb 2343 314

2013-05-31 02:06 WB5WPA 7.040030 -8 1 EM13qc 5 KE7A EM12kx 49 254
2013-05-31 02:06 WB5WPA 7.040153 -1 0 EM13qc 5 KE7A EM12kx 49 254

2013-05-31 02:06 WB5WPA 7.040030 -24 0 EM13qc 5 PI4THT JO32kf 7986 39
2013-05-31 02:06 WB5WPA 7.040153 -23 0 EM13qc 5 PI4THT JO32kf 7986 39