Barry, I've been playing around that for a while. Chuck Rippel method is not bad but was initially written because most of the R-390(A) receivers runs "too hot" at 150µV in the IF deck input for 7V at the diode load. My own sets were adjusted at 7V diode load for a 225µV setting (450µV EMF) connected to the IF deck input. That approximately equals to the Chuck method but by having the Line Output at 0 VU on the -10 dB scale. There is a lot of variables involved, including the individual transconductance of the tubes used in the RF and IF decks. And that have to be re-adjusted from time to time to compensate for the tubes ageing.
73, Jacques, VE2JFE in Montreal ______________________________________________________________ R-390 mailing list Home: http://mailman.qth.net/mailman/listinfo/r-390 Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[email protected] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
