Hello The calibrate signal on my RA 117 is very weak, I seem to be getting a reasonable signal out of L69 but minor adjustment to the cores of the inductors L69/L75 do not seem to improve things. Any ideas much appreciated. Don --- Outgoing mail is certified Virus Free. Checked by AVG anti-virus system (http://www.grisoft.com). Version: 6.0.401 / Virus Database: 226 - Release Date: 09/10/02