TNX Genossen VLFers!
> Stefan, Genosse, Roman: Diplexer is resonant at 17.2 kHz....it helps roll off
> signals above 100 kHz considerably
>
> 73 Mike wa3tts
>
> -----Original Message-----
> From: wa3tts <[email protected]>
> To: rsgb_lf_group <[email protected]>
> Sent: Wed, Aug 8, 2018 10:46 pm
> Subject: re:Re: LF: 24.0 kHz sig - NAA?
>
> Stefan, Genosse, Roman: For what it is worth, I can detect weak carrier lines
> above NAA near 24.2 kHz.
>
> View from my analog DBM LF converter with e-probe in tree at 30ft, 50 ohm
> Bridge-T Q=1 diplexer driving Mini Circuits ZFY-1-S Level 23 Mixer. Isotemp
> OCXO LO at 3.0 MHz
>
> https://www.dropbox.com/s/pklkpgsxushnznd/NAAETALL.JPG?dl=0
>
> NAA is strong enough to hear it weakly with the antenna and diplexer
> disconnected, 30cm long 50 ohm cable for to the mixer picks up some 24 kHz
> energy that is weak but audible here...
>
> 73 Mike wa3tts
>
> -----Original Message-----
> From: DK7FC <[email protected]>
> To: rsgb_lf_group <[email protected]>
> Sent: Wed, Aug 8, 2018 11:50 am
> Subject: Re: LF: 24.0 kHz sig - NAA?
>
> Hello Genosse Roman,
>
> NAA should be centered exactly at 24 kHz, like DHO38 is at 23.4 kHz. It
> can have strong QSB and appears only a few hours per day. Here it
> appears arround 4 UTC these days.
> My grabber and all webpages do not work in the moment due to a webserver
> problem which may be solved just next week...
> These narrow traces are something else, NAA always looks like DHO, about
> 200 Hz wide.
>
> 73, Stefan
>
> Am 08.08.2018 14:15, schrieb Roman:
>> Hello Genossen VLFers!
>>
>> Pse, look R6LDD screen at russian forum.
>> What's a station? NAA or not?
>>
>> http://136.su/index.php?action=dlattach;topic=393.0;attach=18220;image
>>
>> The theme:
>>
>> http://136.su/index.php/topic,393.msg21804.html#msg21804
>>
>>
--
73!
Roman, RW3ADB
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