It's been some years since I had an SW4A, but I certainly don't remember overloading issues on the AM BC band (or anywhere else).? When I first got it, I lived in the NY City area, and later in Washington, DC, both of which have no shortage of high-power AM
stations.
Art Delibert, KB3FJO
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Hi, gang,
I have a SW4 that I listen to the local AM broadcast stations from time to time. The other night in the shack, I had it playing in the background and when I called it a night, I noticed the receiver was dark. Long story short, it popped a fuse, replaced said
fuse, popped it again. Replaced the 1000mf@16v caps. Replaced diodes, some were shorted, and one open.
Life is good. Receiver powered up, I¡¯m listening to the local 1480kHz station.
However!!
When I peak the preselector, the audio distorts like it¡¯s being overdriven, back the preselector down a bit and nice clean audio. I for the life of me don¡¯t remember if the radio distorted on strong signals before or not. I¡¯m talking 20+ over S-9 signals from
radio talk 1480. I tested the tubes, clean contacts, did the usual things.
So, before I start chasing my tail down the rabbit hole, is AM broadcast overload an issue with the SW4?
Mike, wb8vge
