Hi Andy, The datasheet for the poly cap is shown here: http://nichicon-us.com/english/products/pdfs/e-l8.pdf The cap can be ordered from Digikey as p/n 493-4026-1-ND, or as part of the Elecraft KBPF3MDKT modification kit.
The cap fits comfortably below the KNB3 board on both main and sub-receivers. Its outer surface is plastic coated, so there is no chance of shorting out any PCB pads. It's 8mm H x 8mm Diameter. I performed the complete KPBF3 -> KBPF3A mod over the weekend. I haven't run an MDS test yet, but that'll happen this week. Early testing shows good results; My older K3 is able to receive NDBs at 297 and 232 KHz, plus a lot of electrical noise from local sources. Wayne's correct: The band noise level is fairly high below 450 KHz, at least it is here. 73! matt W6NIA On Mon, 13 Jul 2015 14:34:40 +0100 (BST), you wrote: >It does not compute to order the kit as the postage is too high and the >capacitors appear to be relatively easily available. So my question is what >physical size is the 220mfd solid polymer cap used to bypass the zener in the >BPF mods (enabling reception down to 500KHz). It would appear to be a 16v >component but I guess 10v would suffice. Clearly it would need to be small >enough to fit in the available space but without taking my K3 apart I cannot >measure that readily, so if someone has one they could measure for me >(diameter is critical as it lays on its side), that would be grand. >Andy G4HUE >K3 6990, P3 2493, KAT500 1245, KPA500 2102 >______________________________________________________________ >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 mzil...@roadrunner.com Matt Zilmer, W6NIA -- "Always store beer in a dark place." -R. Heinlein ______________________________________________________________ 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
