Message-ID: <503E40CA.8060503@iup.uni-heidelberg.de>
Date: Wed, 29 Aug 2012 18:18:18 +0200
From: =?ISO-8859-1?Q?Stefan_Sch=E4fer?= <Stefan.Schaefer@iup.uni-heidelberg.de>
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Subject: Re: LF: OP8 T/A? ...YV7...
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Hi Jay,

A funny story. Would like to see a capture of the cat instead but this=20
is OT. Or is it a special LF-cat, beeing able to decode OP8? :-)

Last night, Martin/YV7MAE and me, we actually successfully saw a first=20
effect of the E-H antenna combiner, using the circuit i recently=20
published here. There was a 3 dB S/N rise/fall of the DCF-39 carrier=20
when switching from front to back. We almost stopped to try to have some=20
success with this hardware due to various problems. Now we must=20
carefully learn how to adjust the pot for optimal noise reduction. Also=20
we have to test if better results can be obtained when changing the loop=20
resonance frequency. 3 dB is not much but it is a first interesting step=20
and it allows to see what is NE and SW :-)

So this is why i want to try some DFCW-90 at night but i may switch to=20
OP8 automatically, somehow, late at night. We will see.

73 and tnx!
Stefan


Am 29.08.2012 15:48, schrieb jrusgrove@comcast.net:
> Stefan
>
> Good thing John was watching ... cat apparently spun the tuning dial=20
> and I didn't notice until morning. Cool nights now so the cats like to=20
> sleep on the warm receiver. Will engage dial brake next time ;~)
>
> Jay W1VD  WD2XNS  WE2XGR/2
>
>
> ----- Original Message ----- From: "Stefan Sch=E4fer"=20
> <Stefan.Schaefer@iup.uni-heidelberg.de>
> To: <rsgb_lf_group@blacksheep.org>
> Sent: Wednesday, August 29, 2012 7:45 AM
> Subject: Re: LF: OP8 T/A?
>
>
> Hello John ,
>
> OH! Good work, congrats to your receive equpiment! That is amazing. In
> the first moment i thought there were no decodes in our test because no
> red lines are shown in the pskmap. But later i found them in the text.
> Many thanks for the test. It's nice to detect that peak of best
> propagation, in 8 minute intervals. In a spectrogram it would work as
> well of course...
> So i still don't know if Jay got some results too?
>
> A summary of detections showing up here is attached (all T/A and the
> highest S/N of the others)
>
> 73, Stefan/DK7FC
>
> Am 29.08.2012 13:02, schrieb John Andrews:
>> Stephan,
>>
>> Well, I had four "hits" last night:
>>
>> 02:44    136 DK7FC de WD2XES Op8 3714 mi -30 dB in Holden, MA  USA
>> 02:36    136 DK7FC de WD2XES Op8 3714 mi -29 dB in Holden, MA  USA
>> 02:28    136 DK7FC de WD2XES Op8 3714 mi -29 dB in Holden, MA  USA
>> 02:20    136 DK7FC de WD2XES Op8 3714 mi -30 dB in Holden, MA  USA
>>
>> That was in the time frame of a single OP32 transmission, and must
>> have represented a nice signal peak.
>>
>> John, W1TAG/WD2XES
>>
>> On 8/28/2012 10:11 PM, Stefan Sch=E4fer wrote:
>>> Hi both,
>>>
>>> Many thanks. It's 4:10 AM here now and i will take some sleep i think
>>> :-)
>>>
>>> 73, Stefan
>>>
>>> Am 29.08.2012 04:17, schrieb John Andrews:
>>>> Stephan,
>>>>
>>>> I just got home at 0200Z, and will leave the receiver running in OP8
>>>> overnight.
>>>>
>>>> John, W1TAG
>>>>
>>>> On 8/28/2012 8:01 PM, Stefan Sch=E4fer wrote:
>>>>> Jay, LF,
>>>>>
>>>>> After finishing the next sequence in OP32 (hopefully reaching
>>>>> UA4WPF) i
>>>>> would like to try OP8 over to W1. Would you like to try?
>>>>>
>>>>> 73, Stefan/DK7FC
>