From rperley at nrao.edu Wed May 20 10:57:46 2026 From: rperley at nrao.edu (Rick Perley) Date: Wed, 20 May 2026 14:57:46 +0000 Subject: [evlatests] ea12 Q-band polarizer Message-ID: A recent (last week) observation at Q-band has revealed a clearly broken polarizer on ea12. The cross-polarization reaches 80% at the high end of the band. Below ~ 45.5 GHz, all is normal (about 5 to 10%), but above this there is a very sharp rise, maximizing at 60 to 80 % at just above 48 GHz. Both polarizations are similarly affected. Rick -------------- next part -------------- An HTML attachment was scrubbed... URL: