From owner-qrp-l@lehigh.edu Mon Jan 27 13:21:27 1997 Received: from fidoii.CC.Lehigh.EDU (fidoii.CC.Lehigh.EDU [128.180.1.4]) by oucsace.cs.ohiou.edu (8.7.6/8.7.1) with ESMTP id NAA08482 for ; Mon, 27 Jan 1997 13:21:25 -0500 (EST) X-Received-x: from fidoii.CC.Lehigh.EDU (fidoii.CC.Lehigh.EDU [128.180.1.4]) by oucsace.cs.ohiou.edu (8.7.6/8.7.1) with ESMTP id NAA08482 for ; Mon, 27 Jan 1997 13:21:25 -0500 (EST) Received: from Lehigh.EDU ([127.0.0.1]) by fidoii.cc.lehigh.edu with SMTP id <35088-41091>; Mon, 27 Jan 1997 13:20:44 -0500 Received: from nss2.CC.Lehigh.EDU ([128.180.1.26]) by fidoii.cc.lehigh.edu with ESMTP id <35021-38277>; Mon, 27 Jan 1997 13:13:06 -0500 Received: from marble (marble.litc.lockheed.com [198.7.15.33]) by nss2.CC.Lehigh.EDU (8.8.5/8.8.5) with ESMTP id MAA42583 for ; Mon, 27 Jan 1997 12:55:39 -0500 Received: from aruba.litc.lockheed.com (aruba.litc.lockheed.com [198.7.12.139]) by marble (8.8.3/8.8.2) with SMTP id KAA13863 for ; Mon, 27 Jan 1997 10:55:27 -0700 (MST) Message-Id: <970127124951.20249e07@cayman.vf.mmc.com> Date: Mon, 27 Jan 1997 12:49:51 -0500 Reply-To: JEVERHART@cayman.vf.mmc.com Sender: owner-qrp-l@lehigh.edu Precedence: bulk From: JEVERHART@cayman.vf.mmc.com To: "Low Power Amateur Radio Discussion" Subject: RE: Suggestions for backpacking antennas X-To: lgg@ampolexusa.com X-Cc: qrp-l@lehigh.edu, jeverhart@cayman.vf.mmc.com X-Listprocessor-Version: 8.0 -- ListProcessor(tm) by CREN Status: RO Larry, you wrote: >Hi everyone: I want to construct a QRP backpacking antenna(s) so I'm trying >to think of the lightest, less bulky solutions. For single band work I'm >thinking of a 300 ohm folded dipole using the lightweight Radio Shack 300 >ohm ribbon. For multiband work the St. Louis vertical seems easiest. >However, I'm sure there is more experience out there than I have! I'd love >some suggestions! I have several ideas/suggestions: 1. Try a lightweight dipole. I wrote an article on a 1 lb dipole antenna in the NEQRP newsletter, 72 last year. Called the PVC Gusher-II, it can be built for either single-band or multiband use. e-mail me at n2cx@voicenet.com for more details. 2. Try an end-fed halfwave wire. This guy can be nearly as efficient as a center fed dipole and much lighter to carry (no long, heavy feedline). A counterpoise suggested. A simple quarter wave wire layed out on the ground is sufficient. You *do* need a tuner, but this can be very simple. Ther have been various tuners for half wave wires in various ham mags, the ARRL antenna book and on Frank G3YCC's web page. A *very* lightweight eminently potable tuner is described in the latest QRPp and QRP Quarterly - the Rainbow Bridge/Tuner. (blush - I wrote the article.) BTW, a kit for the Rainbow, less case is available from NJ-QRP. 3. A half-wave end-fed wire is also resonant on harmonics and can be easily tuned with the same sort of simple tuner. 72/73, Joe E., N2CX From owner-qrp-l@lehigh.edu Mon Jan 27 16:20:17 1997 Received: from fidoii.CC.Lehigh.EDU (fidoii.CC.Lehigh.EDU [128.180.1.4]) by oucsace.cs.ohiou.edu (8.7.6/8.7.1) with ESMTP id QAA26495 for ; Mon, 27 Jan 1997 16:20:15 -0500 (EST) X-Received-x: from fidoii.CC.Lehigh.EDU (fidoii.CC.Lehigh.EDU [128.180.1.4]) by oucsace.cs.ohiou.edu (8.7.6/8.7.1) with ESMTP id QAA26495 for ; Mon, 27 Jan 1997 16:20:15 -0500 (EST) Received: from Lehigh.EDU ([127.0.0.1]) by fidoii.cc.lehigh.edu with SMTP id <35013-41091>; Mon, 27 Jan 1997 16:19:49 -0500 Received: from nss2.CC.Lehigh.EDU ([128.180.1.26]) by fidoii.cc.lehigh.edu with ESMTP id <34941-38277>; Mon, 27 Jan 1997 16:18:40 -0500 Received: from relay-11.mail.demon.net (relay-11.mail.demon.net [194.217.242.137]) by nss2.CC.Lehigh.EDU (8.8.5/8.8.5) with SMTP id QAA50896 for ; Mon, 27 Jan 1997 16:18:31 -0500 Received: from gqrpclub.demon.co.uk ([194.222.136.27]) by relay-9.mail.demon.net id aa912793; 27 Jan 97 20:52 GMT Message-Id: <854398356.912793.0@gqrpclub.demon.co.uk> Date: Mon, 27 Jan 1997 18:24:57 -0000 Reply-To: g3ycc@gqrpclub.demon.co.uk Sender: owner-qrp-l@lehigh.edu Precedence: bulk From: Frank G3YCC To: "Low Power Amateur Radio Discussion" Subject: Re: Suggestions for backpacking antennas MIME-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit X-To: lgg@ampolexusa.com, Low Power Amateur Radio Discussion X-MSMail-Priority: Normal X-Priority: 3 X-Mailer: Microsoft Internet Mail 4.70.1155 X-Listprocessor-Version: 8.0 -- ListProcessor(tm) by CREN Status: RO For a single band 20m I would mention the 1/2 wave on my web page. No radials are needed, throw into a tree etc, tune for maximum on FS meter and you're away. Cost: nil, ease ++ what more do you want!! For other bands, OK use more than one tuned cct in the box, plug in appropriate 1/2 wave and repeat above. I personally do not think dipoles are the easiest to take if you do not know what supports you may have access to. Fine if you are staying somwhere you can sling up a dipole, but in many circumstances this will not be practical. Another alternative is to make up an L-match with tapped coil, build in a simple resistive SWR bridge (again see my web page) and use any old length of wire you can get up and some sort of counterpoise. Have done that many times and worked fairly long distances. Yes the vertical is another attractive alternative. Thing to do is to try these things out and see what grabs you.But mainly have fun! ---72/3---Frank G3YCC G QRP 042 QTHR (Kirk Ella, East Yorkshire) QRP Web sites: http://www.gqrpclub.demon.co.uk http://www.geocities.com/CapeCanaveral/5179 From owner-qrp-l@lehigh.edu Mon Jan 27 20:45:07 1997 Received: from fidoii.CC.Lehigh.EDU (fidoii.CC.Lehigh.EDU [128.180.1.4]) by oucsace.cs.ohiou.edu (8.7.6/8.7.1) with ESMTP id UAA13852 for ; Mon, 27 Jan 1997 20:45:06 -0500 (EST) X-Received-x: from fidoii.CC.Lehigh.EDU (fidoii.CC.Lehigh.EDU [128.180.1.4]) by oucsace.cs.ohiou.edu (8.7.6/8.7.1) with ESMTP id UAA13852 for ; Mon, 27 Jan 1997 20:45:06 -0500 (EST) Received: from Lehigh.EDU ([127.0.0.1]) by fidoii.cc.lehigh.edu with SMTP id <35016-38277>; Mon, 27 Jan 1997 20:44:36 -0500 Received: from nss2.CC.Lehigh.EDU ([128.180.1.26]) by fidoii.cc.lehigh.edu with ESMTP id <34899-28294>; Mon, 27 Jan 1997 20:43:41 -0500 Received: from postal.atlanta.net (postal.atlanta.net [155.229.2.2]) by nss2.CC.Lehigh.EDU (8.8.5/8.8.5) with ESMTP id UAA65899 for ; Mon, 27 Jan 1997 20:43:25 -0500 Received: from LOCALNAME (dyn18.atlmax001.atlanta.net [155.229.56.146]) by postal.atlanta.net (8.8.4/8.8.0) with SMTP id UAA16599 for ; Mon, 27 Jan 1997 20:27:00 -0500 (EST) Message-Id: <32ED9207.3DF4@atlanta.com> Date: Mon, 27 Jan 1997 21:43:35 -0800 Reply-To: rbe@atlanta.com Sender: owner-qrp-l@lehigh.edu Precedence: bulk From: "Bob, W4ED" To: "Low Power Amateur Radio Discussion" Subject: Re: Suggestions for backpacking antennas References: <1.5.4.32.19970127165453.0066e994@webster.ampolexusa.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit X-Mailer: Mozilla 2.02E-KIT (Win16; U) X-Listprocessor-Version: 8.0 -- ListProcessor(tm) by CREN Status: RO Larry Gagnon wrote: > > ... I want to construct a QRP backpacking antenna(s) ... > ... I'd love some suggestions! ... Larry, My field proven 40/20m vertical is in item #2 on the following ARS page: http://members.aol.com/aa7qu/tfridx.html It also tunes on 15m, but patterns on 15m aren't the best. No tuner needed on this design. -- /| Bob 72/73 / | | / |\ /| / E | \ W4ED x_AE4CA nr Atlanta @EM73wt /_|/____|__\_ ...."QRP", more from less.... [\--======-/ :EMPS QSOs=84 STATES=28/7 DX=?? ~~~~~~~~~~~~~~~~~ From owner-qrp-l@Lehigh.EDU Tue Jan 28 08:06:26 1997 Received: from fidoii.CC.Lehigh.EDU (fidoii.CC.Lehigh.EDU [128.180.1.4]) by oucsace.cs.ohiou.edu (8.7.6/8.7.1) with ESMTP id IAA17965 for ; Tue, 28 Jan 1997 08:06:25 -0500 (EST) X-Received-x: from fidoii.CC.Lehigh.EDU (fidoii.CC.Lehigh.EDU [128.180.1.4]) by oucsace.cs.ohiou.edu (8.7.6/8.7.1) with ESMTP id IAA17965 for ; Tue, 28 Jan 1997 08:06:25 -0500 (EST) Received: from Lehigh.EDU ([127.0.0.1]) by fidoii.cc.lehigh.edu with SMTP id <35061-24930>; Tue, 28 Jan 1997 08:05:10 -0500 Received: from nss2.CC.Lehigh.EDU ([128.180.1.26]) by fidoii.cc.lehigh.edu with ESMTP id <34884-24930>; Tue, 28 Jan 1997 08:04:08 -0500 Received: from ATK.COM (nic.ATK.COM [138.64.4.2]) by nss2.CC.Lehigh.EDU (8.8.5/8.8.5) with SMTP id IAA60064 for ; Tue, 28 Jan 1997 08:03:59 -0500 Received: from Exchange_MN1.ATK.COM by ATK.COM id HAA18270; Tue, 28 Jan 1997 07:03:27 -0600 Received: by Exchange_MN1.ATK.COM with SMTP (Microsoft Exchange Server Internet Mail Connector Version 4.0.994.63) id <01BC0CE9.5E24E200@Exchange_MN1.ATK.COM>; Tue, 28 Jan 1997 07:03:30 -0600 Message-Id: Date: Tue, 28 Jan 1997 06:58:31 -0600 Reply-To: John_Kirby@ATK.COM Sender: owner-qrp-l@Lehigh.EDU Precedence: bulk From: "Kirby, John" To: "Low Power Amateur Radio Discussion" Subject: No Tuner Antenna X-To: "lgg@ampolexusa.com" X-Cc: "'qrp-l'" X-Mailer: Microsoft Exchange Server Internet Mail Connector Version 4.0.994.63 X-Listprocessor-Version: 8.0 -- ListProcessor(tm) by CREN Status: RO RE: Suggestions for backpacking antennas Larry, Check out THE W7YS SLOPER (Worldradio, Feb 97/page 39 ) .... "The nice thing about the antenna is that you can use it without going through an antenna tuner..." I use the sloper technique while camping (5th Wheel) and it works great... I carry a sling shot, one ounce fishing weight, and twenty-pound line on a small SPINNING reel... 72/3 John N3AAZ >---------- >From: Larry Gagnon[SMTP:lgg@ampolexusa.com] >Sent: Monday, January 27, 1997 10:54 AM >To: Low Power Amateur Radio Discussion >Subject: Suggestions for backpacking antennas > > From owner-qrp-l@Lehigh.EDU Wed Jan 29 20:58:48 1997 Received: from fidoii.CC.Lehigh.EDU (fidoii.CC.Lehigh.EDU [128.180.1.4]) by oucsace.cs.ohiou.edu (8.7.6/8.7.1) with ESMTP id UAA14228 for ; Wed, 29 Jan 1997 20:58:46 -0500 (EST) X-Received-x: from fidoii.CC.Lehigh.EDU (fidoii.CC.Lehigh.EDU [128.180.1.4]) by oucsace.cs.ohiou.edu (8.7.6/8.7.1) with ESMTP id UAA14228 for ; Wed, 29 Jan 1997 20:58:46 -0500 (EST) Received: from Lehigh.EDU ([127.0.0.1]) by fidoii.cc.lehigh.edu with SMTP id <35363-48646>; Wed, 29 Jan 1997 20:58:13 -0500 Received: from nss2.CC.Lehigh.EDU ([128.180.1.26]) by fidoii.cc.lehigh.edu with ESMTP id <35207-16649>; Wed, 29 Jan 1997 20:57:11 -0500 Received: from ridgecrest.ca.us (daemon@owens.ridgecrest.ca.us [199.120.150.1]) by nss2.CC.Lehigh.EDU (8.8.5/8.8.5) with ESMTP id UAA33695 for ; Wed, 29 Jan 1997 20:57:01 -0500 Received: from [199.120.150.112] (annex102 [199.120.150.112]) by ridgecrest.ca.us (8.8.5/8.8-custom) with SMTP id RAA01448 for ; Wed, 29 Jan 1997 17:55:21 -0800 (PST) Message-Id: Date: Wed, 29 Jan 1997 17:56:31 -0800 Reply-To: herr@ridgecrest.ca.us Sender: owner-qrp-l@Lehigh.EDU Precedence: bulk From: herr@ridgecrest.ca.us (Michael Herr) To: "Low Power Amateur Radio Discussion" Subject: Re>Suggestions for backpacking antennas Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" X-Listprocessor-Version: 8.0 -- ListProcessor(tm) by CREN Status: RO Larry, What I would suggest for mono band use is a simple dipole, using RG-174 coax, 26gage flex hookup wire and no insulators, just a loop at the end. I don't run multiband cuz of the weight of the rig, tuners, etc. I've used this antenna on several backpacking trips, all with success. >Hi everyone: I want to construct a QRP backpacking antenna(s) so I'm trying >to think of the lightest, less bulky solutions. For single band work I'm >thinking of a 300 ohm folded dipole using the lightweight Radio Shack 300 >ohm ribbon. For multiband work the St. Louis vertical seems easiest. >However, I'm sure there is more experience out there than I have! I'd love >some suggestions! > >*************************************************************** >Larry G. Gagnon, Senior Explorationist, >Ampolex USA Inc. 1050-17th st Suite 2500, Denver CO 80265 USA >tel 1-303-595-9000 fax 1-303-595-0110 email lgg@ampolexusa.com >***************************************************************