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Subject:
From:
Steve Dresser <[log in to unmask]>
Reply To:
For blind ham radio operators <[log in to unmask]>
Date:
Sun, 9 Dec 2012 12:01:24 -0500
Content-Type:
text/plain
Parts/Attachments:
text/plain (208 lines)
John,

I haven't tried it much on 160 because it's kind of hard to tune, but I've 
gotten similar results on all the other bands you mentioned.

Steve

----- Original Message ----- 
From: "John Miller" <[log in to unmask]>
To: <[log in to unmask]>
Sent: Wednesday, November 28, 2012 19:28
Subject: Re: Cobra antennas


> Mine was great on 160, probably not the best but it worked well for me.
> Higher in frequency than 20 meters did hurt a little based on the A99 I 
> had
> up but for 20, 40, 80, and 160, which is where I am most of the time 
> anyway,
> well, not so much 160, but anyway, it worked very well.
> ----- Original Message ----- 
> From: "Steve Dresser" <[log in to unmask]>
> To: <[log in to unmask]>
> Sent: Wednesday, November 28, 2012 4:19 PM
> Subject: Re: Cobra antennas
>
>
>> Tom,
>>
>> My Ultralite Senior has been up with no center support since the spring 
>> of
>> 2004, and survived quite well until it broke last year.  The instructions
>> recommend that you install the antenna with a center support, but I
>> haven't
>> figured out a practical way to do that here so I just don't worry about
>> it.
>> You've heard me on 40 and 20, so you know what kind of a signal I have.
>> My
>> only complaint with this antenna is that I don't think it performs well
>> above 20 meters, but that's probably the fault of the installation.  I
>> haven't tried it on 160 because it's a bit hard to tune; again, it might
>> work better if I could raise the center.  Nevertheless, the antenna is
>> quite
>> well made, and has held up through several New England winters.
>>
>> Steve
>>
>> ----- Original Message ----- 
>> From: "John Miller" <[log in to unmask]>
>> To: <[log in to unmask]>
>> Sent: Wednesday, November 28, 2012 08:26
>> Subject: Re: Cobra antennas
>>
>>
>>> You can support the center, it's probably a good idea but it's such a
>>> light
>>> antenna, my friend with 2 of them has one just hanging by the ends and
>>> with
>>> New England winters it's been that way for about 7 years now.
>>> ----- Original Message ----- 
>>> From: "Tom Behler" <[log in to unmask]>
>>> To: <[log in to unmask]>
>>> Sent: Wednesday, November 28, 2012 7:03 AM
>>> Subject: Re: Cobra antennas
>>>
>>>
>>>> John:
>>>>
>>>> How do you support it at the center, or is that not required?
>>>>
>>>> Just thinking about my situation here, and ease or difficulty of
>>>> installation.
>>>>
>>>> Tom Behler; KB8TYJ
>>>>
>>>> ----- Original Message ----- 
>>>> From: "John Miller" <[log in to unmask]>
>>>> To: <[log in to unmask]>
>>>> Sent: Tuesday, November 27, 2012 11:04 PM
>>>> Subject: Re: Cobra antennas
>>>>
>>>>
>>>>> The cobra ultralite has 2 or 3 versions, I've used the Sr. which is 
>>>>> 140
>>>>> feet
>>>>> long and loved it, I really wish I had room for it here but I don't.
>>>>> The
>>>>> Jr.
>>>>> is the same thing but shorter, I forget by how much and doesn't cover
>>>>> 160,
>>>>> it covers through 80 and I'd imagine works great. I do know a couple
>>>>> people
>>>>> running them and they like them, it's a little pricier than some but 
>>>>> if
>>>>> I
>>>>> had the money I'd probably try the shorter one here based on how much 
>>>>> I
>>>>> liked the big one. It's fed with ladder line and you really can't
>>>>> shorten
>>>>> the ladder line by much, a little won't hurt but you have to make
>>>>> figure
>>>>> 8's
>>>>> if the ladder line is too long. I think it's 70 feet of ladder line
>>>>> which
>>>>> would be another issue where I am now but I ran that in almost to the
>>>>> radio
>>>>> where I used to live and that's so far the best antenna I've ever 
>>>>> used.
>>>>> I
>>>>> can't see why the shorter one wouldn't be just as good for what it
>>>>> does.
>>>>> I
>>>>> had one, a friend of mine who turned me on to them actually has 2 up,
>>>>> one
>>>>> pointing north and south, one going east to west, a friend who helped
>>>>> me
>>>>> put
>>>>> mine up went out and bought one because he liked it and he's very 
>>>>> happy
>>>>> with
>>>>> it, and I know of several others running them. So far I've only heard
>>>>> of
>>>>> one
>>>>> breaking and that was installer's error, they are well made and really
>>>>> perform, I even did an A/B test with my old G5RV and it blew the G5RV
>>>>> away
>>>>> noticeably. I can't say enough good things about it.
>>>>> ----- Original Message ----- 
>>>>> From: "Tom Behler" <[log in to unmask]>
>>>>> To: <[log in to unmask]>
>>>>> Sent: Tuesday, November 27, 2012 9:22 PM
>>>>> Subject: Cobra antennas
>>>>>
>>>>>
>>>>>> Hi, all.
>>>>>>
>>>>>> Please forgive me, since I know this antenna  has been discussed on
>>>>>> the
>>>>>> list
>>>>>> before in various forms.  But, I am needing some basic info from the
>>>>>> perspective of someone who has actually used one.
>>>>>>
>>>>>> Here's the deal:
>>>>>>
>>>>>> As some of you know, for reasons I can't quite understand, I have 
>>>>>> been
>>>>>> having trouble getting my W8AMZ 80-meter half sloper to work well on
>>>>>> 80
>>>>>> meters.  The SWR's for most of the band are at least 3 or 4 to 1,
>>>>>> except
>>>>>> for
>>>>>> about 100  KHZ between 3.850 and 3.950,  where they are below 2.1 to
>>>>>> 1.
>>>>>> Based on the better luck I'm having with the 160-meter sloper made by
>>>>>> the
>>>>>> same company, I'm convinced that there is either something wrong with
>>>>>> the
>>>>>> antenna, or something in my installation that is throwing things off.
>>>>>> Tom
>>>>>> (W8AMZ) himself has actually volunteered to come to my home QTH
>>>>>> sometime
>>>>>> to
>>>>>> try to assess things.  He is about an hour and a half from me, so 
>>>>>> it's
>>>>>> a
>>>>>> trip that will have to be planned by him when he has the free time.
>>>>>>
>>>>>> Since I'm not sure when that trip will occur, I'm thinking about 
>>>>>> other
>>>>>> alternative antennas that might be easily put up  and relatively
>>>>>> inexpensive.  I don't have a lot of room to put up another antenna,
>>>>>> but
>>>>>> I
>>>>>> probably could handle  an antenna that was approximately 100 feet in
>>>>>> length.
>>>>>> Again, my main band of concern is 80 meters.
>>>>>>
>>>>>> I believe that some folks on here have used an antenna called the
>>>>>> Cobra,
>>>>>> or
>>>>>> Cobra Lite.  If you have used this antenna, could you please describe
>>>>>> it
>>>>>> to
>>>>>> me, tell me how you put it up, state any special installation
>>>>>> considerations
>>>>>> I might need to take into account, and tell me whether it worked well
>>>>>> on
>>>>>> 80
>>>>>> meters?
>>>>>>
>>>>>> I am not sure of the price of that type of antenna, but I'm sure I
>>>>>> could
>>>>>> get
>>>>>> that info from the Cobra web site via a google search.
>>>>>>
>>>>>> I simply don't want to spend money on yet another antenna, unless I
>>>>>> have
>>>>>> some assurance from someone who has actually used it, that the 
>>>>>> antenna
>>>>>> might
>>>>>> be a good alternative for me.
>>>>>>
>>>>>> Thanks, and 73 from Tom Behler: KB8TYJ
>>>>>
>>>
>>
> 

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