[Elecraft] PAR/LNR EFHW antenna

[Walter Underwood]

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 <rich at wc3t.us> 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 <k7sz at live.com> 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:Elecraft at 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 rich at wc3t.us
>> 
> 
> 
> 
> -- 
> ---
> 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:Elecraft at 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 wunder at wunderwood.org