I think Fred meant an end fed 1/2 wave, NOT 1/4 wave. 73,
Scott K9MA ---------- Scott Ellington --- via iPad > On Dec 29, 2016, at 9:30 AM, Fred Moore <[email protected]> wrote: > > With an end fed 1/4 wave you only need a counterpoise that is about .05 > wave length. it can be the coax or another counterpoise. Although a > counterpoise has some effect on radiation pattern of a quarter wave > radiator, it is minimal. You won't see much improvement in performance > by going above .05 wave length.. it's not worth the trouble to increase > the counterpoise length.. Fred > > >> On 12/29/16 9:01 AM, mjisted wrote: >> Looking at your text message on the elecraft board. About a half wave >> length ...here is a question for you. I'm going to put up a half >> wavelength of wire for the 5 mhz band. ..hyendfed can I use a quarter >> wave length of counter point as a radiator ground plane. .. >> The. ..G0MVP. >> >> [email protected] >> >> >> Sent from Samsung Mobile >> >> >> -------- Original message -------- >> From: Fred Moore >> Date:29/12/2016 13:04 (GMT+00:00) >> To: [email protected] >> Subject: Re: [Elecraft] Small QRP antenna >> >> Don, >> >> Thank you very much, for pointing out a very common issue that gets >> mixed up into discussions. Your point is so valid the random wire >> always seems to get mixed into the 1/2 wave discussion for some >> reason.. and should never be mixed together. you are absolutely >> correct.. thanks again regards.. Fred >> >> >>> On 12/29/16 12:33 AM, Don Wilhelm wrote: >>> Scott, >>> >>> If the radiator is not a half wave long, it is not a "half wave". >>> Yes, a random length wire may work, but please do not call a random >>> length a half wave - the length of a half wave is quite specific. >>> Similarly, a quarter wavelength is a specific length at a particular >>> frequency. >>> >>> 73, >>> Don W3FPR >>> >>>> On 12/28/2016 11:20 PM, K9MA wrote: >>>> The counterpoise for an end fed half wave (or multiple) really doesn't >>>> have to be anywhere near a quarter wave long. >>> ______________________________________________________________ >>> 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] >>> >> >> -- >> Fred Moore >> email: [email protected] >> [email protected] >> phone: 321-217-8699 >> >> ______________________________________________________________ >> 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] >> >> -- >> This message has been scanned for viruses and >> dangerous content by *MailScanner* <http://www.mailscanner.info/>, and is >> believed to be clean. > > -- > Fred Moore > email: [email protected] > [email protected] > phone: 321-217-8699 > > ______________________________________________________________ > 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]
