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Date: Mon, 02 Jun 2014 19:26:38 +0200
From: wolf_dl4yhf <dl4yhf@freenet.de>
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Subject: Re: LF: Beacon on 477.7 kHz
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Hello Joe,


Am 02.06.2014 13:49, schrieb jcraig@mun.ca:
> Hi Wolf,
>
> Thanks for your efforts.  The beacon is still running but reception
> reports are getting fewer as the QRN increases.

Indeed, I got a couple of traces on the "right frequency" but no 
callsign decoded in recent weeks. The DX season seems to be over now, 
and there's almost no dark path. Even the EU beacons are hardly visible 
on the Twente web sdr most of the night.

>
> I've been playing with Spectrum Lab and am much more impressed with it
> than my abilities... Using the SAQ receiver user preset to listen below
> 10 kHz has produced strange results. It seems I am confused with the 
> filter/injection frequency combination and the red, blue and magenta
> diamonds below the RF and audio windows. 

Oh well, the diamonds - in old versions, they were the only controls on 
the frequency scale, in fact they were 'freely programmable' to control 
generator frequencies, frequency shifts, filter bandwidths.
In recent versions you don't need them anymore (reasons below) so if 
they are still visible after loading old configurations, simply turn 
them off: Double click any of those diamonds, then (on the "Markers" 
panel) select "hide all markers" and they will be gone.

For narrow-band listening, use the filter controls (center frequency, 
bandwidth, zero beat frequency) on the frequency. These are visible by 
default in most configurations, for example:
Select "Quick Settings"..."Other amateur radio modes"..."Narrow CW 
filter, adjustable..".

How to control the filter (incuding the frequency shift) is explained here:

http://www.qsl.net/dl4yhf/speclab/filters.htm#filter_controls_on_main_freq_scale

In recent versions (V2.79), most configurations already use these 
controls but maybe the old 'SAQ Receiver' is not one of them.

To listen to 8.2 kHz, just shift the filter's passband (center) to that 
frequency. It works almost the same way as the web-SDRs.

All the best,
   Wolf  DL4YHF .


> This is a silly question but could you tell me how to listen on 8.2 kHz?
>
> 73
> Joe VO1NA
>
> On Sun, 18 May 2014, wolf_dl4yhf wrote:
>
>> Hello Joe,
>>
>> QRN was terrible here, even though the source was way in the east 
>> (over Poland).
>> Got a few patches on the "right frequency" but the noiseblanker could 
>> not pull the signal out.
>> I will try again tonight if you are still transmitting.
>>
>> 73,
>>  Wolf  DL4YHF .
>>
>>
>> Am 18.05.2014 15:46, schrieb jcraig@mun.ca:
>>> Hi Wolf,
>>>
>>> Thanks for taking a watch. Good luck with the device and conditions.
>>>
>>> 73
>>> Joe VO1NA
>>>
>>> On Sat, 17 May 2014, wolf_dl4yhf wrote:
>>>
>>>> Thanks for the information Joe. I will look for your signal later 
>>>> tonight, testing a new noiseblanker which will possibly make it 
>>>> into a "hardware device" soon. QRN very strong here now, and it 
>>>> does not calm down quickly after sunset.
>>>>
>>>> Cheers,
>>>> Wolf DL4YHF .
>>>>
>>>> Am 17.05.2014 13:55, schrieb jcraig@mun.ca:
>>>>> Jean and Group,
>>>>>
>>>>> Thank-you for the report, Jean. It's weak but its a signal!
>>>>> The beacon will remain on the air over the weekend.
>>>>>
>>>>> 73
>>>>> Joe VO1NA
>>>>>
>>>>> On Sat, 17 May 2014, f6hcc 56 wrote:
>>>>>
>>>>>> Hello Joe and group,
>>>>>>
>>>>>> Joe, I received a little signal on 477.7 kHz two times during the 
>>>>>> night.
>>>>>> The antenna is L inverted with 15 m wire and adaptation coil.
>>>>>>
>>>>>> I think it is your transmission (time in UTC+2):
>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>>> Best 73
>>>>>> Jean / F6HCC / Brittany - in87hs
>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>>> ----- Original Message -----
>>>>>> From: <jcraig@mun.ca>
>>>>>> To: "F1AFJ" <f1afj@online.fr>
>>>>>> Cc: <rsgb_lf_group@blacksheep.org>; "F6CNI" <f6cni@aliceadsl.fr>
>>>>>> Sent: Friday, May 16, 2014 1:40 PM
>>>>>> Subject: Re: LF: Beacon on 477.7 kHz
>>>>>>
>>>>>>
>>>>>> Bonjour J-P et Andy, Group,
>>>>>>
>>>>>> Thank-you for the captures - conditions were not so good last night.
>>>>>> The beacon will remain in operation over the weekend and hopefully
>>>>>> conditions will improve.
>>>>>>
>>>>>> 73
>>>>>> Joe VO1NA
>>>>>>
>>>>>> On Fri, 16 May 2014, F1AFJ wrote:
>>>>>>
>>>>>>> Hello all , bonjour Joe ,
>>>>>>> Petite r�ception cette nuit !
>>>>>>> Mais r�ception tout de m�me !.......
>>>>>>> 73 Jean-Pierre f1afj
>>>>>>>
>>>>>>> Le 15/05/2014 23:42, jcraig@mun.ca a �crit :
>>>>>>>>
>>>>>>>> QRV as I write. 50 watts QRSS10 and CW.
>>>>>>>>
>>>>>>>> Any reports will be received with much gratitude!
>>>>>>>>
>>>>>>>> 73
>>>>>>>> Joe VO1NA
>>>>>>
>>>>
>>>>
>>>>
>>
>>
>>