At 23:18 23/11/2007, you wrote: >I have a bunch of old antique and near-antique tube radios that I would >like to hook up to my outdoor antennas. What impedance should I assume >for the antenna terminals so I can build matching/isolating transformers >to attach to me coax lead-ins? I know it will probably vary with the >radio, but what is a good ballpark impedance value to work with?
I believe that these old radios were usually meant to be connected directly to a random wire antenna, Bill, so their input impedance is high. Just saw Craig's suggestion, and it is a good one, though with some you might find even better signal transfer assuming input impedance as high as one or two thousand ohms. Have fun with these. best wishes, Nick **************************************************************************** Nick Hall-Patch Victoria, B.C. Canada **************************************************************************** _______________________________________________ IRCA mailing list [email protected] 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: [email protected]
