> Holy cow 10T? Thats a big chunk of iron. Kinda surprised you had > enough cable length for that... :)
I just finished winding 10T through the largest #31 clamp-on sold through DX Engineering. Tight and even turns will get you there. It's located right at the K3's RS-232 port. However, there's still not enough choking reactance to bring the noise floor down all the way. So, there may be a direct path of RFI through the connector. Admittedly, I am being fussy here because an antenna connected to the K3 masks the problem. But, I'm still bothered with the problem since the K3 should be immune to a device connected through its RS-232 port. From here, I see two possible solutions: 1) Adding an RS-232 card to my PC thereby eliminating the USB converter; or 2) Using an opto-isolated RS232-to-USB converter. I found a couple on the web, but these are big $$$ devices. Either way, there's no guarantee that either choice will completely mitigate the noise. My K3 is current with grounding mods and it also has the new remote KIO3 board. I'll keep experimenting.... Paul, W9AC ______________________________________________________________ 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
