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  1. W

    CONCERNS ABOUT 1/2 WAVE FIBERGASS =ING TVI

    1/2 wave antennas are not particularly prone to causing interference, no more than any other size of antenna. Probably the biggest cause of interference is how close an antenna system is to those things being interfered with. And, the best way of 'curing' interference is -distance-. If one...
  2. W

    mobile antenna to base !

    Lets get something straight. A dipole if=s a good antenna, but they don't do 'miracles'. A dipole can be put up as a horizontal of a vartical antenna. Nothing special about that. They can work well in either polarity, alsop nothing special about that. A dipole antenna is the basic/standard...
  3. W

    Super Scanner coax

    :)
  4. W

    Super Scanner coax

    If it's used in the normal 'directional' manner, why do you need a phasing cable at all? - 'Doc
  5. W

    HF-vertical + 11meter opptional??

    You have a tuner in your radio and an SGC tuner. Put down a few radials and the longes vertical or inverted 'L' you can and work almost any band you want. Put the SGC at the base of the antenna over those radials. - 'Doc
  6. W

    Lmr 400 inside mast ?

    Think about that for a minute. It isn't the antenna it's self that's lossy, it's the matching network used to end-feed it. Any impedance matching network used to match an end fed 1/2 wave antenna isn't going to be 'super efficient'. But, that also certainly doesn't mean that that particular...
  7. W

    Lmr 400 inside mast ?

    "Why use such high quality, low loss feedline, which is very likely serious overkill for what you need..." One reason is that people get obsessed with that 'loss' idea. In most cases, meaning if you did things at least close to right, those losses aren't going to be significant. There are...
  8. W

    coax

    Do you have any idea of the number of those 'impedance bumps' the average antenna system has? Typically there are a bunch of them. But that comes down to just how large are those 'bumps' and are they (+) or (-), they come in both 'sizes' you know. In most cases all those 'bumps' aren't going...
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    coax

    Yes, the center conductor of LMR-400 is copper plated aluminum. It's a very good feed line at VHF/UHF, not particularly beneficial at HF. It does have slightly better loss ratings than most other coax at HF, but that is a fractional improvement, not a very huge one at all. Depending on the...
  10. W

    Have a real newbie ?

    And by doing that switching around you have a forward and reverse reading watt meter, not an SWR meter. You would have to do the converting of those readings to get SWR. Or, like those 'cross-needle' meters, you could calibrate an SWR scale. Lot of trouble though. That SWR scale is not...
  11. W

    Mobile antenna question

    Something else to consider about a mag-mount is where the feed line will run/rub on the vehicle's surface and how to get it into the vehicle. Along with that magnet being attached to the roof, all of that will cause damage over time. - 'Doc
  12. W

    wilson 5000 vs 2000

    Just for grins, tell me how you figure his dead-key is too high. - 'Doc
  13. W

    Dentron MLA-2500 Linear Amplifier

    Do your self a $425 dollar favor and don't! - 'Doc
  14. W

    wilson 5000 vs 2000

    Since you will know what will be most convenient for you, I'll leave which antenna you should get up to you. I would recommend the tallest antenna you can stand. I don't know how to quantify 'how' good it could be, how to measure it, but the closer you can get to 8 or 9 feet the better off you...
  15. W

    Ever had one of those days?

    I have a Riding mower from Sears, a Craftsman. It has a problem with water in the gas. If you spit around the thing the moisture goes straight to the gas tank. I wish I were exaggerating/joking about that, but I'm not. And bugs. How do bugs that size get into the @#$ gas tank? There's a...
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    Wow talk about pricy

    Didn't look on the Force 12 site so don't know about the price thingy. eBay is a good place to sell stuff, but not a good place to buy stuff, price wise. How many times have you seen things on eBay at higher prices than the same thing can be bought from the manufacturer? - 'Doc
  17. W

    GROUNDING AN A99

    I hate to tell you this but there's no benefit in getting that ground rod 'deeper' in the dirt. It amounts to contact area, and it doesn't matter if that contact area is one inch below the surface or 8 feet below the surface. Sure, if the dirt is wetter 8 feet down that can certainly make a...
  18. W

    Wow talk about pricy

    I had a better impression of 'Force12' before reading that ad. It's got a little bit of truth in it, but not much. I'm afraid I wouldn't buy from them if I were looking for a 3 element beam. They kind'a expensive... - 'Doc
  19. W

    GROUNDING AN A99

    Certainly different, but still a 'spark-gap' type protection. The problem with those is that during the time it takes to bridge that 'gap', your equipment is already getting the 'strike', if that makes sense. If the 'gap' is small enough to be effective then it's also probably going to be...
  20. W

    GROUNDING AN A99

    Oh lord, this is one'a them things that get misunderstood real quickly. 'Grounding an antenna for possible lightning thingys is so miss understood that it's almost impossible to correct without a big number of steps backwards. There is a huge difference between an RF ground and a Safety ground...