All: I'm looking for an RFI-free audio amplifier that I can use to power the external speakers on my SDR transceiver. The PC speakers I've tried were very noisy, especially the USB powered speakers f
Bose Companion 2 series III are RFI quiet here. Dave wo2x Sent from my waxed string and tin cans. _______________________________________________ RFI mailing list RFI@contesting.com http://lists.cont
You're probably okay with any small 8 or 10 watt push pull mono tube amp. Look around for a vintage one that needs work. These are simple circuits that only need the usual restoration such as recappi
I'm looking for an RFI-free audio amplifier that I can use to power the external speakers on my SDR transceiver. The PC speakers I've tried were very noisy, especially the USB powered speakers from C
I use this one with the supplied wall wart. https://www.parts-express.com/dayton-audio-dta-1-class-d-ac-dc-battery-powered-mini-amplifier-15-wpc--300-380 I feed spkr audio to line-in on a mixer, then
I think I misunderstood the request. I thought station transmitted RF was getting INTO the audio amp and distorting the audio. I did not realize the problem is that the audio amp is the SOURCE of RFI
So-called "Class D" amps are digital -- they're generating the audio waveform digitally, so they have all the possible mechanisms associated with trains of rectangular waves. That's one kind of amp t
All: A friend of mine suggested I try the entry level Bose speakers for the shack. He said they produced no RFI on HF and it turns out he was right. They also seem impervious to an RF environment eve
Awesome. It would be interesting to open up one of those Bose cabinets and see what they did inside to make them immune. 73 Rob K5UJ _______________________________________________ RFI mailing list R
mostly profit margin,,,,,, 73 Rob K5UJ _______________________________________________ RFI mailing list RFI@contesting.com http://lists.contesting.com/mailman/listinfo/rfi -- This email has been ch