Message-ID: <20090115194035.xbflpzqx144k0wkg@webmail.versatel.de>
Date: Thu, 15 Jan 2009 19:40:35 +0100
From: uwe-jannsen@versanet.de
To: rsgb_lf_group@blacksheep.org
References: <003301c9759e$c21f3f00$0301a8c0@mal769a60aa920>
	<20090113183625.al3lh1j9nidc40sk@webmail.versatel.de>
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Subject: Re: LF: Antenna Diversity
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Hi Mall,

you,re well come.
the SpecLab version was 2.6 b8 ? but all other versions do it as well.
Mal, I cant describe the steps I handled that program as good as the HELP file
does.
I followed the hints Wolf gives in that file.
have fun
Uwe/dj8wx


Zitat von mal hamilton <g3kevmal@talktalk.net>:

> Tnx Uwe
> I must try this method. If u have some info about setting it up let 
> me know and what version of speclab
> 73 mal/g3kev
>
> ----- Original Message ----- From: <uwe-jannsen@versanet.de>
> To: <rsgb_lf_group@blacksheep.org>
> Sent: Tuesday, January 13, 2009 5:36 PM
> Subject: Re: LF: Antenna Diversity
>
>
>> Hi Mal,
>>
>> pse see also
>>
>> http://home.versanet.de/~uwe-jannsen/two.htm
>>
>> regards
>> Uwe/dj8wx
>>
>>
>>
>> Zitat von mal hamilton <g3kevmal@talktalk.net>:
>>
>>> LF/MF
>>> I am experimenting at present with antenna (space diversity) using
>>> two loops. Loop A is 40 metres perimeter vertical orientation, Loop B
>>> is 190 metres perimeter also vertical.  Both loops optimum E/W.
>>> I am using two receivers in this experiment Ant A to Siemens D2155
>>> level meter, BW 20 Hz and vy stable, Ant B to Datong up converter and
>>> IC746 250 Hz BW. Both audio outputs to soundcard/ARGO display
>>> allowing 50 hz separation for observation.
>>> Observing DI2AM at present and having calibrared this signal on both
>>> RX outputs at a point in time, both signals are fairly constant but
>>> more variations have been observed on Ant A - 40m loop, the signal
>>> surges in strength and then fades down, whereas Ant B has a more
>>> constant output with less fade.
>>> More time is needed for a proper assessment and DI2AM is also a
>>> strong signal. I would need a few long haul signals for a proper test
>>> like Russian or USA .
>>> Interested in MF signals at present.
>>> This method would also work with a couple of small loops or a loop
>>> and probe type antenna, then at a glance one would know how each was
>>> performing, of course with the loop in the optimum direction for
>>> target signal.
>>>
>>> This is just a simple setup, it works well and no audio cross mod
>>> noticed, nice clean signals on display in spite of the fact that the
>>> separation is only 50hz.
>>> A nice balanced mixer would be a more sophisticated approach, that
>>> might come later.
>>>
>>> 73 mal/g3kev
>>>
>>>
>>
>>
>>
>>
>
>
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