I’ve tried several powered speakers on my KX3. Currently, I use a (discontinued) Sony SRS-X33 I bought at Best Buy when I got the KX3 a few years ago. I use it wired. Plays really well if you EQ out all the low end. It isn’t large, but it is relatively heavy. Last year I dropped almost $200 on a highly recommended FOXL Dash 7. While I really like how it sounds, and it’s slimmer and much lighter than the Sony and packs better in the Go Bag, it’s a monster of an RF generator. So it’s useless. If your hand is anywhere near it you become the antenna. Probably has a DC-DC converter in there that is completely unfiltered and unshielded. The Sony is dead quiet. I have another thingy around here somewhere, also recommended, and inexpensive, which is so flimsy I managed to break it after about a months use. And the audio from it was thin and sub-par anyway.
All of that said, I’ve never had an issue with KX3-level RF getting into any of these. I do use my KX3 at home, but even then it’s “backyard portable”, into simple wire antennas, without any concern about grounding/bonding/etc. My wire antennas use the feed coax as the counterpoise, with a choke right at the KX3. And I haven’t had any RF issues with any of these. There may of course be other issues, But it could simply be the speakers themselves. The problem is you could try 5 of them before you find one that’s RF quiet and doesn’t act like a modulation monitor. Grant NQ5T > On Aug 3, 2020, at 9:58 PM, Ron Manfredi <[email protected]> wrote: > > I prefer to operate without headphones, but find the audio output from my > KX-3 to be too weak to be usable, and the rigs' audio amp is not up to > driving an external speaker very well. I tried both an amplified Motorola > speaker and a small MFJ unit, but when using SSB (10-15 Watts) at home into a > beam or into a dummy load I can hear myself quite clearly in the speaker, so > RF is getting in somehow. (the rig's Monitor function is not turned on!) > I have tried ferrites on both the power and audio lines to the speaker, but > they have not helped. This is while using an Astron RS-35 linear supply for > both the rig and the speaker. Any suggestions, or powered speaker > recommendations? > > Ron, WA2EIO. ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[email protected] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [email protected]
