Wednesday 20th October 2021: It's interesting to see that the TEP (Trans-Equatorial Propagation) openings are continuing on 144 MHz in South America.
This is a sample of the TEP spots from the DX-Cluster with distances in the region of 5300 to 6000kms...
Spotter Freq. DX Time Info Country
LW2DAF 144180.0 HI8DL 00:12 20 Oct CQ CQ Q65B 15s Dominican Republic
LU5BE 144180.0 HI8DL 00:11 20 Oct Q65B -4 dB 961 Hz Dominican Republic
LU5CQC 144290.0 HI8DL 00:04 20 Oct USB PHONE S5 A 6022 KM Dominican Republic
LU5CQC 144180.0 HI8DL 23:52 19 Oct Q65 DX 6022KM TEP Dominican Republic
LW2DAF 144310.0 HI8DL 23:42 19 Oct 55 IN GF05rk Dominican Republic
LU7DW-@ 144290.0 HI8DL 23:38 19 Oct Dominican Republic
LW2DAF 144180.0 HI8DL 00:12 20 Oct CQ CQ Q65B 15s Dominican Republic
LU5BE 144180.0 HI8DL 00:11 20 Oct Q65B -4 dB 961 Hz Dominican Republic
LU5CQC 144290.0 HI8DL 00:04 20 Oct USB PHONE S5 A 6022 KM Dominican Republic
LU5CQC 144180.0 HI8DL 23:52 19 Oct Q65 DX 6022KM TEP Dominican Republic
LW2DAF 144310.0 HI8DL 23:42 19 Oct 55 IN GF05rk Dominican Republic
LU7DW-@ 144290.0 HI8DL 23:38 19 Oct Dominican Republic
Spotter Freq. DX Time Info Country
LU5CQC 144180.0 PJ2BR 00:11 20 Oct Q65 DX 5300 KM TEP Curacao
LW2DAF 144180.0 PJ2BR 00:11 20 Oct CQ CQ Q65B 15s Curacao
LU5BE 144180.0 PJ2BR 00:11 20 Oct Q65B -3 dB 1395 Hz Curacao
LU5BE-@ 144300.0 PJ2BR 23:48 19 Oct cq CQ Curacao
LW2DAF 144300.0 PJ2BR 23:44 19 Oct CQ CQ 55 in GF05rk Curacao
It's nice to see that a lot of the reports for the opening were on SSB...
In the video, LW2DAF near Buenos Aires is working HI8DL in the Dominican Republic. Note the distortion due to TEP.
— Diego Alejandro Feil (@LW2DAF) October 20, 2021
In the second video clip, LW2DAF is working PJ2BR in Curacao and the distortion is even worse.
This is actually a very good reminder to all of those stations who stay all of the time on FT8 that they might be missing some good openings. If the TEP signals are too distorted then FT8 doesn't work.
It's all about using the appropriate mode for the conditions at the time.
Update: As the frequency gets higher then only signals that are at right angles to the Geomagnetic Equator are propagated. This means that signals at say 28 MHz can arrive at a wide range of angles but 144 MHz signals need to be close to 90 degrees.
The result at 144 MHz is that stations in Argentina are working Curacao, Aruba and Dominican Republic, stations in the south of Brazil are working Guadeloupe and Martinique.
This is a video of PY2AOL working FM5CS on the 20th of October...
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