Good point, Butch, and is certainly worth a try.
Tom Behler: KB8TYJ
----- Original Message -----
From: "Butch Bussen" <[log in to unmask]>
To: <[log in to unmask]>
Sent: Saturday, August 17, 2013 6:55 PM
Subject: Re: 2-meter Antenna Challenge
> Well, you could put the radials under the magnet. Should act the same
> as the top of a car You don't actually have to ttie to the coax shield.
> Capacitively coupled works as well.
> It is pretty much ttrial and error.
> 73
> Butch
> WA0VJR
> Node 3148
> Wallace, ks.
>
>
> On Sat, 17 Aug 2013, Tom Behler wrote:
>
>> Again, Butch, I think the whole unit, including the antenna connection,
>> is
>> sealed, but will check just to be sure the next time I go into my new
>> office.
>>
>> It may not be for a while, since I'm on leave, but I suppose I could find
>> some reason to sneak in there and check.
>>
>> Will let you know.
>>
>> Tom Behler: KB8TYJ
>>
>> ----- Original Message -----
>> From: "Butch Bussen" <[log in to unmask]>
>> To: <[log in to unmask]>
>> Sent: Saturday, August 17, 2013 5:56 PM
>> Subject: Re: 2-meter Antenna Challenge
>>
>>
>>> What kind of mount, nmo? You could put the wire around the threads
>>> where the coil screws on. 19 inches should work. at least two would be
>>> good.
>>> 73
>>> Butch
>>> WA0VJR
>>> Node 3148
>>> Wallace, ks.
>>>
>>>
>>> On Sat, 17 Aug 2013, Tom Behler wrote:
>>>
>>>> Mark:
>>>>
>>>> So, now I'm thinking of two things here.
>>>>
>>>> First, the magmount I have is sealed, so I'm not sure how I would get
>>>> to
>>>> the
>>>> shield of the coax to make the connection you describe.
>>>>
>>>> Also, I'm doing some mental calculations as to the length of the
>>>> counterpoise.
>>>>
>>>> Can someone refresh me as to the formula you would use for that,
>>>> keeping
>>>> in
>>>> mind that I'd like the antenna to perform best around 146
>>>> megahertz--pretty
>>>> much in the center of the band.
>>>>
>>>> Tom Behler: KB8TYJ
>>>>
>>>> ----- Original Message -----
>>>> From: "Mark WZ0K" <[log in to unmask]>
>>>> To: <[log in to unmask]>
>>>> Sent: Saturday, August 17, 2013 2:45 PM
>>>> Subject: Re: 2-meter Antenna Challenge
>>>>
>>>>
>>>>> Hi Tom,
>>>>> On The antenna situation. Some years ago, I had a 5/8 wave mag
>>>>> mount
>>>>> that I used in a window sill. It performed well enough. However, After
>>>>> hearing about using a counterpoise, I loosened the antenna from the
>>>>> mag
>>>>> mount and slid a thin piece of wire between the antenna and the mag
>>>>> mount.
>>>>> I
>>>>> made sure it touched the metal part of the bracket that was connected
>>>>> to
>>>>> the
>>>>> braid of the coax. The wire was cut to a quarter wave. Suddenly my
>>>>> reports
>>>>> were better in all the repeaters, and I started reaching in to
>>>>> machines
>>>>> that
>>>>> I could not reach before. I hope this helps.
>>>>>
>>>>> God bless,
>>>>> Mark
>>>>> God loves You!
>>>>> My personal website: Http://www.christiantraditions.info
>>>>> The Blind Computer People List:
>>>>> http://christiantraditions.info/mailman/listinfo/blindcomputerpeople_christiantraditions.info
>>>>> Follow me on Twitter: https://twitter.com/TorgersonMark?refsrc=email
>>>>> -----Original Message-----
>>>>> From: [log in to unmask]
>>>>> Sent: Saturday, August 17, 2013 11:32 AM
>>>>> To: [log in to unmask]
>>>>> Subject: Re: 2-meter Antenna Challenge
>>>>>
>>>>> Two suggestions:
>>>>>
>>>>>
>>>>>
>>>>>
>>>>>> Hi, all.
>>>>>>
>>>>>> I hope I am not wearing out my welcome back to the list, but I have a
>>>>>> challenging antenna situation I'm currently facing in the new faculty
>>>>>> office
>>>>>> I will be occupying starting this Spring semester.
>>>>>>
>>>>>> I currently have an old Kenwood TMV7A in the office, with which I
>>>>>> have
>>>>>> always had at least some luck, in terms of getting into our local
>>>>>> 2-meter
>>>>>> repeater. The repeater is about 15 miles from the University.
>>>>>>
>>>>>> However, in my new office, I am finding that the small mag-mount
>>>>>> antenna
>>>>>> I
>>>>>> have always used simply does not allow me to reach the repeater
>>>>>> consistently. Currently, I have the magmount sitting on a small
>>>>>> metal
>>>>>> bracket on the window sill in the office. It is right next to the
>>>>>> window,
>>>>>> so I would think that should help. However, I do not have much of a
>>>>>> ground
>>>>>> plain for the magmount. I also think there is some de-sensing going
>>>>>> on
>>>>>> with
>>>>>> the steel of the office building, and with other surrounding computer
>>>>>> equipment in the office complex.
>>>>>>
>>>>>> I do have a filing cabinet on the other side of the office that I
>>>>>> could
>>>>>> use
>>>>>> as a ground plane, but the top of the filing cabinet is too high, and
>>>>>> there
>>>>>> is not enough space between it and the office ceiling to accommodate
>>>>>> the
>>>>>> magmount antenna.
>>>>>>
>>>>>> This obviously is a very challenging situation, and I also have to be
>>>>>> at
>>>>>> least somewhat concerned with appearance, in terms of not having an
>>>>>> ugly-looking antenna that might draw more attention to what I am
>>>>>> trying
>>>>>> to
>>>>>> do than I might want.
>>>>>>
>>>>>> Do any of you have any suggestions as to how to help the mag-mount
>>>>>> perform
>>>>>> better in this situation?
>>>>>>
>>>>>> Or, might I be better off considering another type of antenna, such
>>>>>> as
>>>>>> a
>>>>>> J-pole of some sort.
>>>>>>
>>>>>> I would appreciate any thoughts.
>>>>>>
>>>>>> Tom Behler: KB8TYJ
>>>>>>
>>>>>>
>>>>>
>>>>
>>>>
>>>
>>
>>
>
|
