This article opens up the match box and figures out the contents. http://www.hamradio.me/antennas/lnr-precision-ef-102040mkii-examination.html
wunder K6WRU Walter Underwood CM87wj http://observer.wunderwood.org/ (my blog) > On Jan 8, 2018, at 3:07 PM, rich hurd WC3T <[email protected]> wrote: > > Try a 64:1 balun. That's what our antenna expert at our club suggests for > resonant end fed antennas. > > On Mon, Jan 8, 2018 at 5:59 PM, Rich Arland <[email protected]> wrote: > >> I have one of the original PAR end fed half wave antennas prior to LNR >> taking over production and sales. >> >> >> Everything is present EXCEPT the little matching network that couples the >> EFHW to the radio. I tried contacting LNR to obtain a new one but they told >> me that they couldn't do that, BUT they would sell me a new version of the >> complete antenna for the paltry sum of around $80! I said "no thanks" and >> hung up the phone. >> >> >> I am after the schematic or the best guess of the components and parts >> placement that will resonate this 40-30-20M antenna. It's not rocket >> science but it's close!! As I understand it these antennas are fairly high >> impedance wise, so I need some kind of matching network to bring that down >> to around 50 ohms for the KX2. >> >> >> Failing that path, has anyone hooked an EFHW to the internal ATU with good >> results? I would also include a cut to frequency ground radial that I would >> lay out below the antenna. That would be the easiest thing and simple to >> employ. >> >> >> Over the next 10-12 days I am planning on doing some portable operating >> from MD and PA. Taking the KX2 with me and hope to get some operating time >> between family obligations. >> >> >> Opinions, observations, ideas please. >> >> >> Vy 73 es gud DX! >> >> Rich Arland K7SZ >> >> >> ______________________________________________________________ >> 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] >> > > > > -- > --- > 72, > Rich Hurd / WC3T / DMR: 3142737 > PA Army MARS, Northampton County RACES, EPA-ARRL Public Information Officer > for Scouting > Latitude: 40.761621 Longitude: -75.288988 (40°45.68' N 75°17.33' W) Grid: > *FN20is* > ______________________________________________________________ > 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] ______________________________________________________________ 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]
