We present sensitivity measurements of the EVLA at L-band between 1 and 2 GHz to assess the impact of the receivers with the new thermal gap assembly. Our on-the-sky test results are consistent with lab measurements, and show that the sensitivity improves by an average value of ∼7% in the frequency range 1–1.55 GHz, and degrades by an average value of ∼3% in the frequency range 1.55–2 GHz. The ...