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   AMATEUR_RADIO      Ham radio for when Armageddon strikes      2,531 messages   

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   Message 470 of 2,531   
   Roy Witt to Ed Vance   
   Antennas by Roy   
   15 May 14 11:56:25   
   
   Greetings Ed!   
      
    RW>> Here's something that may interest you.   
      
    EV> Thanks for the URLs.   
      
   Welcome.   
      
    RW>> http://tinyurl.com/lu7zvsr   
      
    EV> So a Quagi looks like it has two square reflector sections instead of   
    EV> reflector elements?   
      
   No, a Quagi has a quad reflector and driven element. The rest are   
   parasitic orhestra* leaders. 8^) > directors*   
      
    EV> I would guess that them being of a larger size helps the Front to   
    EV> Back Ratio?   
      
   The F2BR is quite good, as is the forward gain. I made those from an   
   10mtr example printed in 73 Magazine, back in the 70s, while I was   
   unemployed and vacationing at home, c1977.   
      
    EV> As I was typing near the end of this message I remembered a SQUALO   
    EV> Antenna, if I spelled it right, and just had to write about it.   
    EV> I think it was a Square Halo antenna way back in the 1960's for 6M   
    EV> and maybe 2M. It's been a L O N G time since I've thought about   
    EV> those.   
      
   SQUALO is an acronym for Square Halo antenna. These aren't the same   
   antennas.   
      
    RW>> and   
      
    RW>> http://tinyurl.com/km56byy   
      
    EV> It has been a long time since I seen a Gizmotchee Antenna.   
    EV> The ones I saw IIRC only had two sections, Yours has four.   
      
   Note that it has one driven element for either vertical or horizontal   
   polarization. Tha required two lengths of coax run to a switch box at the   
   operating station. I used RG8 for that. Coax was cheap in c1969.   
      
    EV> Remember I never heard them called by that name until You mentioned   
    EV> it some time ago.   
      
   What were they called then?   
      
    RW>> and   
      
    RW>> http://tinyurl.com/kpoaj8o   
      
    EV> I couldn't tell much about the Horn Antenna from the photo.   
    EV> What freq is it cut for?, 1296Mc/s?   
      
   No, it is much more broadbanded than that. Once I figured out what the   
   problem was with the tuning device, it covered 800Mhz to 2.1Ghz on a   
   spectrometer...   
      
    EV> The file is called HORN2ANT.GIF, is it for 2 Meters instead of 1296?   
    EV> I think I saw Rods on the sides of the Horn Antenna, is that right?   
      
   No, that 2 just designates that this is a picture of the horn antennea,   
   #2...I have several more photos of it that includes the initial start of   
   the antenna to this one, the final version as delivered to the customer.   
      
   I also have one of my wife holding a wave guide in front of the back door   
   to my shop; to show it in proportion to familar things.   
      
    EV> You sure have many interesting Antennas, I feel like a Novice   
    EV> compared to You when it comes to talking about Antennas, as I've Made   
    EV> very few antennas, and they were of the common type.   
      
   Thanks for the accolades. And don't feel like a novice, because some of   
   the gear that you have and still use makes me feel like a novice operator.   
      
    EV> But Ham Radio does have so many interesting things about it!   
      
   It sure does. I had an interest in packet radio for a while and it was   
   quite interesting. The most fun I had in it was trying out some of my own   
   yagi antennas to reach packet stations up the coast from San Diego to   
   Santa Barbarbra (spelling) on UHF frequencies. I started out with a 5   
   element, then a 6 element and finally a pair of stacked 6 element yagi'.   
   Then went back to just a driven element and a mirror (reflector).   
      
    EV> Some folks excel at lots of different parts of it that we are   
    EV> entitled to experiment with during our License Term. And when they   
    EV> write about it, the whole Ham Community learns too.   
      
   IMO, Wayne Green did that the best of all. Yeah, he rambled on about his   
   US Navy experiences during WW2 aboard a submarine, but he also had some   
   very interesting and challenging ideas.   
      
    EV> I saw The Note about the addition You will make to the echo Rules.   
    EV> I don't feel anything I Write or Read here would be considered   
    EV> plagiarism,   
      
   You're not trying to 'best' someone in a knowlege contest either.   
      
    EV> No One is stealing someone elses stuff by referring to   
    EV> what they've read about, and sharing those thoughts in a BBS echo,   
    EV> and not giving a Reference where the material they are talking about   
    EV> originated from.   
      
   They are if they quote it verbatim and don't give the true author his   
   due, nor where one can find that info and varify the source.   
      
    EV> There are thoughts I remember sometimes of things I experienced many   
    EV> many years ago and probably are of no use to most people, but once in   
    EV> a while those memories come back to me and I even may mention them to   
    EV> someone.   
      
   That's ok to do, as it is something you have experienced yourself. Quoting   
   someone else's work to bolster your position on something without giving   
   them credit, isn't. And we can all learn from such sources, if they're   
   given credit where credit is due.   
      
    EV> While writing the above paragraph I remembered a man I knew in   
    EV> Alameda, California who was a Ham in his younger days, who told me he   
    EV> welded two Dimes on his Telegraph Key to use with his Spark   
    EV> Transmitter, because he kept burning out the contact on the Keys he   
    EV> used. When he told me this he wasn't licensed anymore but told me   
    EV> about it after learning I was a Ham.   
      
   I can believe that. Especially when you consider that sending morse code   
   requires interupting the Continous Wave of a CW transmitter. Especially a   
   spark transmitter.   
      
    EV> Sure, that information isn't of much interest today, unless Amateur   
    EV> Radio History is of interest to someone.   
      
   It's still an interesting piece of information that many youngsters today   
   wouldn't have a clue about, unless they have studied the early days of   
   radio.   
      
    EV> I haven't transmitted a signal in years but even though fooling   
    EV> around with computer stuff is more interesting to me, I still enjoy   
    EV> reading about what is happening in Amateur Radio.   
      
   Yeup...(as I contemplate the way in which I'll be making that little UHF   
   LPDA for experimenting on 'how to gain reception of some Austin, TX HDTV   
   stations' that have escaped me so far)   
      
       Have a day!   
      
            R\%/itt - K5RXT   
      
   --- GoldED+/W32 1.1.5-31012   
   --- D'Bridge 3.99   
    * Origin: HAM Radio, aka Amateur Radio. 804? Over! (1:387/22)   

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