Hello, I'm contemplating buying the BL2 balun. It would be connected to 450-ohm transmission-line, which would go to a version of W1AB's "killer-antenna", sized for 20m on a 31' jackite-pole.
A reviewer of the BL2, on eham five years ago, commented about heat and signal-loss. The heat and signal-loss concern me, not at the QRP-level but higher wattage. I realize it is spec'd at 250 W but how hot does it get? I've looked for data about insertion-loss for the BL2 and came up short there. Hopefully someone has measured the insertion-loss and could share that data. The "elecraft BL2 assembly and operating manual" has the cores as ferrite material. But ferrites exhibit non-linear properties, so the loss may be a function, not only of frequency, but also drive-level. Insertion-loss shows up as heat and that heat affects the properties of the ferrite. As I wrote above, I'm not concerned about QRP operation. If I put it into operation on FD and but take my KX3 home for the day, what happens if a club-member connects his 100+ W rig to the antenna-system to operate thru the night? TIA for any reply. 73 Jerry KM3K KX3 #6088 ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
