John & Chris
Thanks for the info on your settings.
I use an SDR-IQ with output to Virtual Audio Cable VAC. The SDR-IQ is set to
produce an 2 kHz audio output from 136-138 kHz so that 136 kHz = 0 Hz audio.
SL, Opera WSPR and now Wolf are connected via the VAC. With these settings a
Wolf signal Tx = 137.249 kHz should produce an audio signal of 1249 kHz and
I have set the Wolf centre frequency to this. I wait to see if I get any
decodes!
However, there may be other issues such as sample rate for the VAC. What
happens when different programs using different sample rates connect to a
single VAC? I have just been experimenting with the dual receive facility of
the SDR-IQ and stereo processing mode of SL to feed the 19580.0 kHz signal
(GBZ, MSK200) into the left channel and 136-138 KHz into the right. The SL
sampling rate detector shows a "lock" and measures the SR error of the VAC.
But whether this is actually of benefit I'm not sure!!
73 Terry GW0EZY
-----Original Message-----
From: [email protected]
[mailto:[email protected]] On Behalf Of Chris 4X1RF
Sent: 29 January 2012 00:21
To: [email protected]
Subject: Re: LF: WD2XES WOLF Saturday Night
Terry, John,
In my case I've chosen 1500Hz for no particular reason, the receiver
is a direct conversion front-end feeding an M-Audio board run at
48ks/s and SpectrumLab as the mixer-filter-demodulator stage. Audio is
routed to Wolf with VAC.
QRV now on 137294 for the night... time to get some sleep....
73s
Chris 4X1RF
On 1/29/12, John Andrews <[email protected]> wrote:
> Terry,
>
> In receiving, I use the default center frequency of 800 Hz, and put the
> receiver into CW mode. I have the receiver BFO set for an 800 Hz pitch,
> and the dial frequency set to the transmit carrier frequency of 137.294
> kHz. In my case, this allows use of a 250 Hz IF filter in the receiver,
> which can be an advantage if other stations fire up a bit higher in the
> band.
>
> Chris's settings are fine, but I've had better luck at this QTH with the
> receiver run in a narrower BW.
>
> John, W1TAG
>
> On 1/28/2012 6:51 PM, Terry GW0EZY wrote:
>> Chris/John
>>
>> Please could you provide more information on your Wolf configuration
>> settings? There are a few variables and it would increase the chance of
>> decoding if these were known. Sorry if I missed this an earlier email.
>>
>> The default Centre frequency in the Wolf GUI is 800 Hz but in your
>> decodes you (seem to) have f=1500. How does this relate to a Tx
>> frequency of 137.294 kHz? I'm assuming the operating frequency for Rx is
>> USB dial + Wolf Rx centre frequency?
>>
>> 73s Terry GW0EZY
>>
>> ------------------------------------------------------------------------
>>
>> *From:*[email protected]
>> [mailto:[email protected]] *On Behalf Of *Chris 4X1RF
>> *Sent:* 28 January 2012 23:18
>> *To:* [email protected]
>> *Subject:* Re: LF: WD2XES WOLF Saturday Night
>>
>> John,
>>
>> Following the successful receive of Markus's Wolf10 transmission this
>> evening, I'm now QRV on 137.294kHz. Will report tomorrow.
>>
>> 73s
>> Chris 4X1RF
>>
>> On Sat, Jan 28, 2012 at 11:03 PM, John Andrews <[email protected]
>> <mailto:[email protected]>> wrote:
>>
>> WD2XES will be running WOLF(10) on 137.294 kHz tonight starting around
>> 00 UTC. If CFH comes back on in the interim, I may have to QSY, but they
>> appear to have been off all day.
>>
>> Reports are welcome.
>>
>> John, W1TAG/WD2XES
>> FN42ch
>>
>>
>>
>>
>> No virus found in this incoming message.
>> Checked by AVG - www.avg.com
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>> 19:34:00
>>
>
>
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