Friday, June 30, 2017 they were able to do the first test and QSO with 76GHz equipment built by Pascual, EA5JF. They resorted to a path of 15Km totally visual that gave them good expectations for a first test. From Calpe in JM08AP to Cumbre del Sol in JM08BR, Spain. More info. https://translate.google.es/translate?sl=auto&tl=en&u=https://www.ure.es/foro/18-microondas/228862-primer-qso-ea-en-banda-de-76ghz.html
Congratulations on a FB QSO! With the 90cm dish and bare mixers, you will be able to to extend your DX. Best DX will be when WX has lowest dewpoint. So get your winter jackets ready. I did >100km when DP was -15C. Send pix to DUBUS as well. 73, -Brian
Impressive and good audio... What I wonder is how much of the phase distortion in the signal was caused by Doppler shift induced in the signal by wind currents.
Awesome! Looks like the 4 mm band in the US will be "darkened" to 55 dBm EIRP. http://www.arrl.org/news/amateur-ra...-76-81-ghz-band-sharing-with-vehicular-radars http://transition.fcc.gov/Daily_Releases/Daily_Business/2017/db0622/DOC-345476A1.pdf
One of the alternatives was a full power allocation at 75.5 to 76 GHz. Somehow that seems better to me but I can't say I'm on the band. I'm focusing on 3300 to 3500 MHz right now with an OFDM modem project.
Yes, the new USA EIRP limit renders better/future DX on the 4mm band almost impossible, short of WSJT modes. The chance for EME has been killed for sure. I would have rathered we got a "full power" allocation at 75.5 to 76. I'm not sure if a Rules change is a real option at this point either.
I read the ARRL article and have a question. I do not have any experience with microwave or radar systems. Why would a vehicle radar need 316 watts EIRP for a system that looks at other cars in the immediate area?
