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  1. G

    Cophasing any 50 ohm antennas(beating a dead horse again)!!!!

    I stated it openly when i posted this,my meds affected my thinking processes hard,thanks for the corrections about db gains it is 2x5 not 5x5 and several others that imputted on this posting,thank you,you helped alot of other folks get a clear idea of what actually goes on, you used and posted...
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    impedance matching help

    Using a magnet mount isnt the best answer but,that wilson is a 5/8s wave electronically and the whip is a quater wave theorectically the wilson will out talk the whip.pattern radion angles,anyway no coils needed to match up just use rg 58 or mini 8 coax,if rg59 is used it will have a impedance...
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    Freightliner antenna issue

    Trucks antennas Have the older antennas checked with an external s.w.r meter,not the one built into the radios,if they check high then by pass them,or try new antennas on the mounts,if the new ones show high its most likely coax issuses,the wilson 2k is an onmi-directionel antenna and will talk...
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    W58 base antenna.

    Those antennas have a habit out here in Oklahoma with strong winds popping the tops out,because they use a sleeve of plastic to slip the top into the base area.im not sure how they do else where.but you could try the maco 5/8s wave or if price isnt a hassel go to the SPT500 also a 5/8s wave.but...
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    Cophasing any 50 ohm antennas(beating a dead horse again)!!!!

    you can state the arrl hand book i like that book,but its written by ham operarators alot of then in fact geniuses but when the nu tronics corperation,antenna specailist and the beam antennas manufactures went to get antennas designed and then state gains,they didnt reort to the book,they hired...
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    Cophasing any 50 ohm antennas(beating a dead horse again)!!!!

    The 1/4 wave part is correct in your respone but when you use the math formulas on that page to figure coax lengths for any freq, you will see that the coax wave length doesnt come out any where near as long as the antennas length to get 1/4 wave,and you can do the co-phasing of any wave length...
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    Cophasing any 50 ohm antennas(beating a dead horse again)!!!!

    I liked the book I had read it awhile back,and basically your right about splitiing the load evenl,but with rf being a magnetic field the power from the radio effiency is increased, in other words single antennas have a far higher energy loss than duals,this is why the 3db gain is made,think...
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    Cophasing any 50 ohm antennas(beating a dead horse again)!!!!

    Ok i have added a couple of attachements,! a document published 1983,and the other ought to be great for a laugh because of my lame ability with paint,but it shows patterns of single and dual antennas on a semi and then a 4 wheeler,truck or car,and the effect of off-setting dual antennas on the...
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    Uniden PC68XL (turn DK down)??

    with 8 watts dead key it might take closer to a 80 or 90 ohm resistor to drop the dead key to where you want it,but the cap will still allow it to swing right bak up.and using slightly diff cap values is not only fun to exp with but also depending on your voice tones will make swing faster or...
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    102" base cb antenna needs advice

    dipole a dipole works but on your roof it will be horizinal talking.why not just put the gray 102 at the center of the peak of the house?and if stealth was the main idea.then 18' in air kills that too.also as stated above make groundplan elements and at 18' it will dif talk 360 then
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    MODULATOR SEEKER 8417 TUBE

    It is actually a seeker and they are exact clones of Black cats ;)
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    varmint

    17kv6 Depending on 2 things the amps had 17kv6s.the size of the amp and also its age,the older and larger XLs had 6kv6s and some of the more modern had 17kv6s .also on some of the the newer ones had a band selector on them.Abe Brewer was really trying to draw the Ham market right before the...
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    Wawasee Black Cat Mobile Tube Amp. Good or bad?

    The black amp came out in the mid 70s and if a 102 whip is top much a Francis fiberglass will work.not the hot ticket by no means but they do talk around town nicely;)
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    D&A phantom no high power.

    Care to share the troubled spot and the fix?
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    varmint

    The drive tubes are 6kv6a and the finals are 6lr6's and although different electronicly 6lf6 should work. :) ok didnt see the date it was posted until after responding,just goes to show I am an air head,but I do have fun with it,lol
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    Not to start an arguement just some thin s Ive learned over time.

    what losses? you arent running 100' of coaxe. my meters anology was presented by nu tronics in the early 70s. also the mannufactures of clr2 s also posted litature about time and fixed phased antenneas they didnt find any losses that would be sigificate enough to stop from using them. rf isnt...
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    Not to start an arguement just some thin s Ive learned over time.

    btw just kinda? damnn i was trying so hard too
  18. G

    Imax above beam

    the matching net work is a capiter that is like you said in the bottom half. and thats where the antenna transmission starts. the Imax is a .64 wave length antenna makes it almost perfect for groundwave as well as DX talking. good choice on antenna N.B.
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    Imax above beam

    if he puts right on top of the beam. the beam is the ground plane. and what ever direction the beam is point say east and west the Imax is no longer omni directional . thats why ground plane kits made are 360* and if your worried bout squeing the beam what about the tower. or isnt it vertical...
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    Imax above beam

    i thought the bean had verticle as well as horizonal cross fire, i used 9' because thats 1/4 wave when using 11 meters. thatll give the imax its own radiation pattern with out the yagi knowin its there. and vice versa. i looked at the picture and I stand corrected your horizonal and Imax is...