[Lowfer] Wm beacon testing tonight

Tue Nov 18 10:56:52 EST 2014

Mike

Dug out my antenna notes on lowfer VD from many years ago. The antenna was 200' perimeter. The loop 
conductor was milspec RG-11 (excellent braid) using the outer braid as the loop conductor. Since the 
antenna could be raised and lowered with relative ease I also made measurements on 200' perimeter 
loops made from #12 and #8 copper wire to see how they performed. Analysis was based on measured 
antenna current which gives an accurate indication of antenna Rtotal. The Rtotals can then be 
compared to predict the dB difference between the antenna conductors. I also made some calculations 
based on other antenna conductors. RG-11 is the reference conductor at 0 dB.

1/4" Litz......................+1.3 dB
7/8" Heliax.................+ 0.9 dB
1/2" Copper tubing.....+0.4 dB
RG-11............................0 dB
#8 Copper.................-2.4 dB
#12 Copper...............-3.8 dB

You're #16 loop conductor is going to be even further down the list ... that plus the fact your 
antenna area is less than that of a 200' perimeter are going to make this a challenge. Keep in mind 
that on an Argo display a 1 dB difference in received signal level can mean the difference between 
barely visible and solid white line reception. Not trying to throw a wet blanket on your efforts ... 
just giving you an idea what to expect and what's possible.

Jay W1VD  WD2XNS  WE2XGR/2

----- Original Message ----- 
From: "N8OOU" <n8oou at meekfarm.us>
To: "Discussion of the Lowfer (US, European, &UK) and MedFer bands" <lowfer at mailman.qth.net>
Sent: Tuesday, November 18, 2014 10:11 AM
Subject: Re: [Lowfer] Wm beacon testing tonight

> Thanks for looking Doug. I have to get the antenna component working better before the next try. 
> The positive from last night is that I believe what little signal I am emitting is clean.
>
> 73   de   N8OOU - Mike Meek
>
> On 11/18/2014 05:18 AM, Douglas D. Williams wrote:
>> I did screen captures all night and all I got was SJ and some traces of
>> what was probably TAG.
>>
>> 73, Doug KB4OER
>>
>> On Tue, Nov 18, 2014 at 12:17 AM, N8OOU <n8oou at meekfarm.us> wrote:
>>
>>> LLoyd, Mike, Thanks for spending the time tonight looking for my signal.
>>> Like a lot of the country, It's too cold and windy here to spend much time
>>> working on outside antenna's. Later this week a warmup is predicted.
>>> Antenna activity will just have to wait till then. Tonights test was a
>>> success for me as I lost the master osc signal by the time I got to the end
>>> of the drive way.
>>>
>>> 73   de   N8OOU - Mike Meek
>>>
>>> On 11/17/2014 10:03 PM, Michael Sapp wrote:
>>>
>>>> Lloyd & Mike: About the same (nil)  results here in EN90xn, although
>>>> lite traces of TAG aslo spotted here along with SJ. Rather noisy tonite
>>>> as well....still monitoring tho
>>>>
>>>> Mike wa3tts
>>>>
>>>> ----- Original Message ----- From: "Lloyd Chastant" <lloydc6 at gmail.com>
>>>> To: "Discussion of the Lowfer (US, European, &amp, UK) and MedFer bands"
>>>> <lowfer at mailman.qth.net>
>>>> Sent: Monday, November 17, 2014 10:18 PM
>>>> Subject: Re: [Lowfer] Wm beacon testing tonight
>>>>
>>>>
>>>>   Took a look here for couple hours but No copy..only saw SJ up a bit
>>>>> Lloyd W3NF FM19
>>>>>
>>>>> On Tue, Nov 18, 2014 at 1:34 AM, N8OOU <n8oou at meekfarm.us> wrote:
>>>>>
>>>>>   I have the Wm beacon running tonight to check out a newly constructed
>>>>>> low-pass filter. My last test had a fairly strong signal at the main
>>>>>> Oscillator frequency of 5.188 Mhz. That frequency sweeps up and down
>>>>>> like
>>>>>> 185.300x with a wider sweep. I'll be going mobile shortly to get out
>>>>>> of the
>>>>>> antennas near field.
>>>>>> --
>>>>>> 73   de   N8OOU - Mike Meek
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