2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/6022Deshpande and Rankin (DR1999, DR2001) claim that the frequency of the very narrow feature, in the spectrum of radio flux variations of PSR B0943+10, is an alias of its actual value. They also claim to have detected an amplitude modulation on the above phase modulation. This paper argues that both these claims are unjustified.12 pages, 3 figuresAstrophysicstext