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Subject:
From:
Tom Behler <[log in to unmask]>
Reply To:
For blind ham radio operators <[log in to unmask]>
Date:
Mon, 22 Aug 2011 06:11:00 -0400
Content-Type:
text/plain
Parts/Attachments:
text/plain (178 lines)
    Gerry:

I believe around $400.

Or, at least, that's what I paid about 5 years ago when I got mine.

Tom Behler: KB8TYJ

----- Original Message ----- 
From: "Gerry Leary" <[log in to unmask]>
To: <[log in to unmask]>
Sent: Monday, August 22, 2011 4:35 AM
Subject: Re: Need suggestions for better mast arrangement to safely raise HF 
screw-driver antenna on RV


> How much do they cost?
> ----- Original Message ----- 
> From: "Tom Behler" <[log in to unmask]>
> To: <[log in to unmask]>
> Sent: Wednesday, August 17, 2011 7:47 AM
> Subject: Re: Need suggestions for better mast arrangement to safely raise 
> HF
> screw-driver antenna on RV
>
>
>>    It's called a Predator, and is made by Bob Atkins (N9JMX), who builds
>> them out of his shop in Indiana.
>>
>> Tom Behler:  KB8TYJ
>>
>> ----- Original Message ----- 
>> From: "Gerry Leary" <[log in to unmask]>
>> To: <[log in to unmask]>
>> Sent: Tuesday, August 16, 2011 10:29 PM
>> Subject: Re: Need suggestions for better mast arrangement to safely raise
>> HF
>> screw-driver antenna on RV
>>
>>
>>> Which screwdriver do you have?
>>> ----- Original Message ----- 
>>> From: "Tom Behler" <[log in to unmask]>
>>> To: <[log in to unmask]>
>>> Sent: Monday, August 15, 2011 4:28 PM
>>> Subject: Re: Need suggestions for better mast arrangement to safely 
>>> raise
>>> HF
>>> screw-driver antenna on RV
>>>
>>>
>>>>    Colin:
>>>>
>>>> Well, I don't know if I can afford a neumatic mast, but the fiber glass
>>>> ones
>>>> you suggest might be a possibility.
>>>>
>>>> However, I think John does bring up a good point about the need for
>>>> something conductive, to couple with the vehicle ground.
>>>>
>>>> Will keep reading this thread with interest.
>>>>
>>>> 73 from Tom Behler:  KB8TYJ
>>>>
>>>> ----- Original Message ----- 
>>>> From: "colin McDonald" <[log in to unmask]>
>>>> To: <[log in to unmask]>
>>>> Sent: Monday, August 15, 2011 1:55 PM
>>>> Subject: Re: Need suggestions for better mast arrangement to safely
>>>> raise
>>>> HF
>>>> screw-driver antenna on RV
>>>>
>>>>
>>>>> if you want to spend the doe, get a numatic telescoping mast.  Push a
>>>>> button
>>>>> inside, the mast goes up, push a button again, and the mast goes down.
>>>>> Otherwise, there are linemans telescoping fiberglass polls that work
>>>>> quite
>>>>> well.
>>>>> A friend just bought a 33FT telescoping linemans poll on ebay for 
>>>>> $200.
>>>>> The
>>>>> sections pull out and there is a spring loaded ppin that pops out to
>>>>> hold
>>>>> the section in place.  The bass is about 3 inches I think.
>>>>> Probably way too much for your needs though.
>>>>> that sounds like an absolutely monsterous RV...12 feet to the roof
>>>>> line?
>>>>>
>>>>> 73
>>>>> Colin, V A6BS
>>>>> ----- Original Message ----- 
>>>>> From: "John Miller" <[log in to unmask]>
>>>>> To: <[log in to unmask]>
>>>>> Sent: Monday, August 15, 2011 11:48 AM
>>>>> Subject: Re: Need suggestions for better mast arrangement to safely
>>>>> raise
>>>>> HF
>>>>> screw-driver antenna on RV
>>>>>
>>>>>
>>>>>> telescopic would be best I'd say though also you need something
>>>>>> conductive
>>>>>> because it needs the vehicle ground. If you have something
>>>>>> nonconductive
>>>>>> right now, that's your problem.
>>>>>> ----- Original Message ----- 
>>>>>> From: "Tom Behler" <[log in to unmask]>
>>>>>> To: <[log in to unmask]>
>>>>>> Sent: Monday, August 15, 2011 10:00 AM
>>>>>> Subject: Need suggestions for better mast arrangement to safely raise
>>>>>> HF
>>>>>> screw-driver antenna on RV
>>>>>>
>>>>>>
>>>>>>> Hi, all.
>>>>>>>
>>>>>>> Well, I attempted to check into yesterday's 20-meter Cross-Country
>>>>>>> blind
>>>>>>> ops
>>>>>>> net from the RV, but was not successful.
>>>>>>>
>>>>>>> I believe my screw-driver antenna simply is not high enough on the
>>>>>>> back
>>>>>>> of
>>>>>>> the RV to allow me to get out well.
>>>>>>>
>>>>>>> The antenna is mounted with u-bolts on the back bumpber on a piece 
>>>>>>> of
>>>>>>> pipe
>>>>>>> that is probably about thre or four feet high.  This gets part of 
>>>>>>> the
>>>>>>> screwdriver antenna and whip above the roof line of the RV, but it
>>>>>>> does
>>>>>>> not
>>>>>>> get it completely above the roof line by any means.  The RV is
>>>>>>> approximately
>>>>>>> 12 feet high.
>>>>>>>
>>>>>>> Originally, I had used an arrangement with a longer piece of 
>>>>>>> mounting
>>>>>>> pipe,
>>>>>>> but it turns out that the pipe was de-tuning the antenna, especially
>>>>>>> on
>>>>>>> 10
>>>>>>> and 15 meters.
>>>>>>>
>>>>>>> So, my question is this:  Does anyone know of a fiber-glass or other
>>>>>>> type
>>>>>>> of
>>>>>>> non-conductive mast that I might try to get the screw-driver up
>>>>>>> higher?
>>>>>>> Obviously, I want to be safe here, and don't want to have to mess
>>>>>>> with
>>>>>>> guys.
>>>>>>>
>>>>>>> Something telescopic might be the best, but again, I would think it
>>>>>>> would
>>>>>>> have to be of fairly high quality.
>>>>>>>
>>>>>>> If anyone has any suggestions, I'll save them for future reference.
>>>>>>>
>>>>>>> Due to a number of other things going on right now that will put a
>>>>>>> crimp
>>>>>>> in
>>>>>>> the budget, I probably won't be able to do anything until next 
>>>>>>> year's
>>>>>>> camping season, but it's always good to start thinking and planning
>>>>>>> in
>>>>>>> advance.
>>>>>>>
>>>>>>> 73 from Tom Behler:  KB8TYJ
>>>>>>
>>>>>
>>>
> 

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