[Lowfer] Can I expect to receive ....

[pbunn at patbunn.com]

The antenna impedance at LF is many thousand of ohms or more. A simple FET 
impedance transformer will greatly improve your reception. John, known here 
as JD has a very good design that was published in the Lowfer. You will also 
need a good filter to cut the strong AM broadcast signals or they will 
overload your receiver and generate IMD signals. Johns transformer also has 
a filter. On LF signal conditioning before the receiver is a must.

Pat
N4LTA

-----Original Message----- 
From: WD8ARZ
Sent: Friday, February 01, 2013 7:44 PM
To: Discussion of the Lowfer (US, European, &UK) and MedFer bands
Subject: Re: [Lowfer] Can I expect to receive ....

Hello Pat, appreciate the advice. Will look into that.

I use that antenna for transmitting on now 1.8 Mhz - 54mhz and of course
I have to match it to 52 ohms. However I know going below 500 khz I will
have to use a different tuner than what I normally use.

If you all are also on the LF group, I did get the photo to display with
my email there.

73 from Bill - WD8ARZ

On 2/1/2013 12:03 PM, pat bunn wrote:
> On 2/1/2013 11:43 AM, JD wrote:
>> Anything's worth a try, Bill, but be aware there are two big factors that
>> will affect your chances of receiving anyone at LF, apart from the
>> receiver's own properties.  First is how much locally originated noise 
>> will
>> be picked up at LF by your antenna, and the other is whether you can 
>> match
>> the antenna's impedance to something approximating 50 ohms at the
>> frequencies of interest.  Best of luck.
>>
>> John
>> ______________________________________________________________
>> Lowfer mailing list
>> Home: http://mailman.qth.net/mailman/listinfo/lowfer
>> Help: http://mailman.qth.net/mmfaq.htm
>> Post: mailto:Lowfer at mailman.qth.net
>>
>> This list hosted by: http://www.qsl.net
>> Please help support this email list: http://www.qsl.net/donate.html
>>
> I'd highly recommend John Davis's preamp/impedance match circuit to get 
> that wire matched to 50 ohms.  Otherwise you will deal with a very lossy 
> antenna ay LF.
>
> Pat
> N4LTA
> ______________________________________________________________
> Lowfer mailing list
> Home: http://mailman.qth.net/mailman/listinfo/lowfer
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:Lowfer at mailman.qth.net
>
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html
>

______________________________________________________________
Lowfer mailing list
Home: http://mailman.qth.net/mailman/listinfo/lowfer
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Lowfer at mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html