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Date: | Thu, 27 Jan 2011 07:10:39 -0800 |
Content-Type: | text/plain |
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I see there is another one of these called: The Wellbrook.
----- Original Message -----
From: "Steve Dresser" <[log in to unmask]>
To: <[log in to unmask]>
Sent: Wednesday, January 26, 2011 10:15 AM
Subject: Re: Really Big Transmitters
> Russ,
>
> Like any broadband antenna, this one has to be a compromise. Beyond that,
> though, it's hard to say what it will do.
>
> Steve
>
> ----- Original Message -----
> From: "Russ Kiehne" <[log in to unmask]>
> To: <[log in to unmask]>
> Sent: Wednesday, January 26, 2011 11:15
> Subject: Re: Really Big Transmitters
>
>
>> The reason I ask, do you know anything about the following antenna?
>> The AOR LA390
>> is a wide range receiving antenna that covers from 10 kHz to 500 MHz.
>> There
>> are
>> four selectable
>> band ranges
>> from 150 kHz to 30 MHz that allow manual tuning and then fixed operation
>> for covered
>> frequencies from 10-149 kHz and 30-500 MHz. The built in amplifier
>> provides
>> up to
>> 20 dB of gain. This indoor antenna is ideal when space is at a premium.
>> This
>> active
>> loop antenna has a 1 foot diameter. The single supplied loop element is
>> all
>> that
>> is required for the entire reception range.
>> ----- Original Message -----
>> From: "Martin McCormick" <[log in to unmask]>
>> To: <[log in to unmask]>
>> Sent: Wednesday, January 26, 2011 7:44 AM
>> Subject: Re: Really Big Transmitters
>>
>>
>>> Russ Kiehne writes:
>>>> I was wondering, what are you using for an antenna on longwave?
>>>
>>> A very, very poor antenna for now. It is the three guy
>>> wires on my tower electrically tied together. When we get some
>>> milder weather, I plan to change that to an inverted V type
>>> configuration. I have heavy insulators designed to be load
>>> bearing on each end of each guy wire and each wire is about 55
>>> feet long so it still will not be very efficient on long wave.
>>> Some of the really good long wave antennas are large coils or
>>> loops of wire on a big frame which I should probably try some
>>> time to see if I hear anything more than I do now.
>>>
>>> Short of hitting the jack pot and buying a huge ranch
>>> out in the country, all my low-frequency antennas will be
>>> extreme compromises.
>>>
>>> By the way, I hear that long-wave antennas work well
>>> when run just above the ground. Low-frequency RF does not
>>> propagate via the same mechanisms that HF does.
>>
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