On 31-Aug-07, at 5:35 AM, Tom L Jones wrote: > Marty > Maybee I am wrong on the SR-2 & it uses varactor tuning. > If I > get time today I will open mine & find out. Tuning caps can rub but it > is rare............ >
The Superadio (original) and the Superradio 2 both use a variable cap for tuning (I own and have aligned both). It was the Superadio 3 that used the varactor tuning. Yes, I had a problem with the variable cap in the SR2 rubbing and making noise when tuning, this is due to a bad electrical contact between the cap rotor and ground. In my case contact cleaner (Deoxit) on the rotor contacts at the ends of the cap cured the problem but be careful as some variable caps have plastic dielectric between the vanes which may dissolve in some contact cleaners... 73, Deane McIntyre VE6BPO _______________________________________________ IRCA mailing list IRCA@hard-core-dx.com http://montreal.kotalampi.com/mailman/listinfo/irca Opinions expressed in messages on this mailing list are those of the original contributors and do not necessarily reflect the opinion of the IRCA, its editors, publishing staff, or officers For more information: http://www.ircaonline.org To Post a message: irca@hard-core-dx.com
