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Antique Radio Technical Forum
zenith t.o. h-500 bcb sia switch

Posted by SteveB on 07/06/2009 08:27

::On broadcast band the !R5 is fine. Make sure you have good continuity in your wavemagnet. Being a tuned circuit the BC band needs that to be working. Remember also the wavemagnet will null signals if not turned correctly. Rotate the wavemagnet or the entire radio for best reception. I thought mine was dead also on part of the band until I started rotating the radio.
:
:
:Thanks Joe and everyone I'll try to get a better look at the contacts and recheck the wavemagnet.
:I'll post again any follow up.
:
:thanks to all
:JIM

Does that model have a selenium rectifier? My T/O (L series) would work on some BC stations and fade out completely on others after a minute or two. The voltages were a little low after a check. The SW seemed to work fine at that time also.

I changed the rectifier with a diode and dropping resistor and it works fine now.

Could that be your problem?



zenith t.o. h-500 bcb sia switch 
jim 07/02/2009 16:58 
Doug Criner 07/02/2009 17:39 
Walt 07/02/2009 18:00 
Lewis L 07/02/2009 18:05 
jim 07/02/2009 20:43 
jim 07/02/2009 20:55 
Doug Criner 07/05/2009 16:17 
Joe 07/02/2009 18:28 
JIM 07/02/2009 21:04 
SteveB 07/06/2009 08:27 
Bill G. 07/06/2009 08:59 
Radiodoc 07/07/2009 16:44 
Joe 07/07/2009 17:20 

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