Date: Sun, 10 Jul 94 04:30:18 PDT From: Ham-Ant Mailing List and Newsgroup Errors-To: Ham-Ant-Errors@UCSD.Edu Reply-To: Ham-Ant@UCSD.Edu Precedence: Bulk Subject: Ham-Ant Digest V94 #217 To: Ham-Ant Ham-Ant Digest Sun, 10 Jul 94 Volume 94 : Issue 217 Today's Topics: (none) Antenna on my boat?? MFJ-1798 Mouting 2 Hamstix on the bumper? need 80 meter dipole help SWR vs Frequency Excursion What's your favorite cheap RDF 2m antenna Send Replies or notes for publication to: Send subscription requests to: Problems you can't solve otherwise to brian@ucsd.edu. Archives of past issues of the Ham-Ant Digest are available (by FTP only) from UCSD.Edu in directory "mailarchives/ham-ant". We trust that readers are intelligent enough to realize that all text herein consists of personal comments and does not represent the official policies or positions of any party. Your mileage may vary. So there. ---------------------------------------------------------------------- Date: 9 Jul 94 13:57:32 GMT From: news-mail-gateway@ucsd.edu Subject: (none) To: ham-ant@ucsd.edu subscribe ------------------------------ Date: Fri, 8 Jul 1994 14:54:25 From: usc!howland.reston.ans.net!europa.eng.gtefsd.com!newsxfer.itd.umich.edu!ncar!asuvax!pitstop.mcd.mot.com!mcdphx!schbbs!mothost!mdisea!uw-coco!nwnexus!olympus.net!olympus.net!@@ihnp4.ucsd.edu Subject: Antenna on my boat?? To: ham-ant@ucsd.edu >In article <2vak22$psk@eis.calstate.edu> nhickso@eis.calstate.edu (Nathan M. Hickson) writes: >>Hello all, >> >> I posted about this is rec.radio.cb and got no replys so now I'm >>trying here...I need to put a cb in my 18 foot boat for the summer and I need >>help with the antenna. The boat is all fiberglass except for a little >>wood and some chrome railing around the outside. My problem is how do I >>get a ground plane without any metal on the boat. Do I use the lake? My >>idea would be to put a copper plate about 5 in by 5 in on the bottom of >>the boat and run a hefty ground wire to the antenna ground. Would this >>work...Would the lake be a sufficient ground...HELP...I dunno what to do >>!! >Nathan - yes that will work fine. I sailed a boat from Hawaii to San >Francisco with using the ballast keel as the `ground'. It effectively >used the ocean as a ground plane. I used 20M daily and was given >great signal reports. >You'll want to epoxy the copper plate to your boat's bottom close to the >transom so you can run the wire up the stern - you don't want to drill >any holes below the waterline for the wire (although some do). No need >for a sacrificial zinc fitting if your boat stays in fresh water. >A quarter wave whip is your best antenna on 11M. >Jeff NH6IL Nathan, Stop what you are doing and go down to the boat store and buy a marine style antenna for your boat. Shakespere makes a bunch of different types and they are real cheap. William Vaughn vaughnwt@olympus.net "Just plain Bill." ------------------------------ Date: Sat, 9 Jul 94 09:49:26 -0500 From: ihnp4.ucsd.edu!usc!elroy.jpl.nasa.gov!lll-winken.llnl.gov!noc.near.net!news.delphi.com!usenet@network.ucsd.edu Subject: MFJ-1798 To: ham-ant@ucsd.edu Tobias Meier,ETF E121,22803,,,y writes: >Hi, > >I read in a anouncement about a new vertcal antenna MFJ-1798. >It's a 10 band antenna 80/40/30/20/17/15/12/10/6/2m. >Unfortunately, datasheets and antenna are not yet available from the dealer. >Has one of you experience with this antenna? >I'm interested about bandwidth, performance in QSO and mechanical stability. > >Thank es 73 de Tobias It seems to me that a lot of MFJ's products are vaporware. They eventually get everything to market, but it looks like they advertise something a long time before they're ready to sell. I've personally tried to order three different items from them, only to be told they were all backordered. Too bad! 73's KD4CSW ------------------------------ Date: 9 Jul 94 11:05:05 EST From: csusys.ctstateu.edu!white@yale.arpa Subject: Mouting 2 Hamstix on the bumper? To: ham-ant@ucsd.edu Can anyone forsee problems with mounting both a 40M Hamstik and a 20M hamstik on the rear bumper of the car? Thx Harry ------------------------------ Date: 9 Jul 1994 09:47:02 -0400 From: ihnp4.ucsd.edu!agate!howland.reston.ans.net!news.ans.net!newstf01.cr1.aol.com!search01.news.aol.com!not-for-mail@network.ucsd.edu Subject: need 80 meter dipole help To: ham-ant@ucsd.edu In article <2vknl2$qnj@cascade.ens.tek.com>, t1terryb@cascade.ens.tek.com (Terry Burge) writes: >80 meter dipole stuf............ My 2 cents: I have room for a full wave dipole on 40, but only as a sloper. It's 50 ft high at one end, 30 ft at the other. With a good tuner, I've done quite well on 40 and 80 (even worked Costa Rica on 160 with 100 watts). It works great during Sweepstakes. Bottom line: don't worry, put something up that _you_ feel is reasonable, and have fun!! 72 (+/-1), Jim N0OCT ------------------------------ Date: Sun, 10 Jul 1994 05:56:32 GMT From: ihnp4.ucsd.edu!agate!howland.reston.ans.net!europa.eng.gtefsd.com!newsxfer.itd.umich.edu!zip.eecs.umich.edu!umn.edu!csus.edu!netcom.com!veltman@network.ucsd.edu Subject: SWR vs Frequency Excursion To: ham-ant@ucsd.edu Here is a question for all you guys who just got out of college and have brains full of theory. This question came up for discussion on the Un Radio Club repeater. When an antenna is at resonance, assuming no reactance, there should be a 1:1 VSWR. When the VSWR is measured on excursions of a givin frequency, the VSWR is always less as the frequency goes up from resonance than when it goes down. Why. What is the theory behind the why. Regards, Paul WA6OKQ ------------------------------ Date: 9 Jul 1994 11:55:42 GMT From: ihnp4.ucsd.edu!agate!soda.berkeley.edu!remailer@network.ucsd.edu Subject: What's your favorite cheap RDF 2m antenna To: ham-ant@ucsd.edu I have a couple of fox hunts coming up in the near future, but I really cannot afford to invest much more in ham radio for awhile :-( So, the header says it all. What inexpensive 2m RDF antennas and/or techniques have you successfully utilized. These are beginners' hunts, where the fox will be stationary, with not nasty tricks like switching polarization. The average terrain is fairly hilly, from about 300 to 800 or more feet above sea level. Thanks in advance for your suggestions and 73 DE N1QNK Jim glock glock larry wall dont kill the president -------- For more information about this anonymous posting service,please send mail to remailer@soda.berkeley.edu with Subject: remailer-info. -------- To respond to the sender of this message, send mail to remailer@soda.berkeley.edu, starting your message with the following 7 lines: :: Response-Key: ideaclipper ====Encrypted-Sender-Begin==== MI@```$MS^P;+]AB?X9TW6\8W2:RP&2')84/Z#14$;71EGD9TAEC5,@"G,VXR CA^)#>4M73@D\*WI-SO8L#<$M3Q6\+\IX]R##8I4.^PU-1?(` ====Encrypted-Sender-End==== ------------------------------ End of Ham-Ant Digest V94 #217 ******************************