Stefan,
Had the first hit at 0149z. Said -46.5 dB!
John, W1TAG
> On Oct 17, 2013, at 9:36 PM, Stefan Schäfer
> <[email protected]> wrote:
>
> Jay,
>
> Correction: Markus created a special file for me which makes the ramp time
> shorter than 1 ms. So now my PA can send OPDS with Markus' software and i am
> on air in this mode tonite until 06:15 UTC.
>
> Maybe you can detect me?
>
> 73, Stefan/DK7FC
>
>
>
> Am 18.10.2013 02:56, schrieb Stefan Schäfer:
>> Hi Jay,
>>
>> I wanted to give it a try tonite. First i wanted to use DF6NM's OPDS
>> software which i would really prefer over the ROS-OP stuff. But then i found
>> that the sndoutpt.exe creates a ramp in the audio tone. My FETs didn't like
>> that at all, they made a crrrk at the beginning and end of each dash. This
>> is because the audio passes a comparator which makes a clear hard keyed tone
>> for the mixer which keys the IXDD414 anyway. FETs survived but it showed
>> that i need to do hardware modifications if i want to use Markus' tool.
>> In WSPR-15 it may be the same but then it is just 4 times per hour and in
>> OP32 is is much more.
>>
>> Then i installed the standard Opera program which i find very annoying. It
>> is not even possible to select a TXD line of the RS232 which i normally use
>> for PTT. When using the standard program i'm generating the tone with
>> SpecLab (on the "LF TX PC") and key the PTT with the program (on the "LF/MF
>> RX/TX PC"). Didn't work :-/ Soldered arround to use RTS instead. PTT was
>> keyed when pressing the tune button and released when pressing it again, as
>> intended. But then, when pressing "Beacon", the PTT was key down, permanent
>> tone.
>>
>> Need a VOX or so...
>>
>> So i can do no OPDS tests tonite, sorry.
>>
>> 73, Stefan/DK7FC
>>
>> PS: I'll continue with DFCW-90 now!
>>
>>
>>
>> Am 17.10.2013 18:00, schrieb [email protected]:
>>> Stefan
>>>
>>> Wasn't expecting you to start transmitting OPDS today ... just a thought
>>> for the future. But if you want to, that's okay too.
>>>
>>> OPDS32 is capable of of decoding at about -50 dB s/n (relative to SSB
>>> bandwidth).
>>>
>>> Your call and grid is easily added at the receiving end.
>>>
>>> Jay
>>>
>>>
>>> ----- Original Message ----- From: "Stefan Schäfer"
>>> <[email protected]>
>>> To: <[email protected]>
>>> Sent: Thursday, October 17, 2013 10:57 AM
>>> Subject: Re: LF: T/A OPDS DK7FC
>>>
>>>
>>> PS: Jay, Markus,
>>>
>>> What is the S/N performance of OPDS compared to WSPR-15 (apart from the
>>> fact that the callsigns must be known in advance and that there is less
>>> information into one sequence) ??
>>>
>>> 73, Stefan
>>>
>>> Am 17.10.2013 16:55, schrieb Stefan Schäfer:
>>>> Jay,
>>>>
>>>> Am 17.10.2013 14:36, schrieb [email protected]:
>>>>>
>>>>> Several stations on this end are now set up to receive OP Deep Search ...
>>>>> including Garry K3SIW in IL. Being that far inland is quite a
>>>>> disadvantage for T/A signal reception compared to 'coastal' stations.
>>>> Garry got several WSPR-15 decodes of me last season, so i think he could
>>>> make it in OPDS as well.
>>>>>
>>>>> On my end I'm interested to see if it's possible to roll back the
>>>>> earliest T/A reception times (current best of about 2045Z mid season).
>>>>> There are probably other 'unknowns' waiting to be discovered along the
>>>>> way ;~) .
>>>> OK, i can give it a try. Not sure if i can make it today arround 20 UTC
>>>> but i will try.
>>>> Am i already included in the OPDS list as a possible station?
>>>>
>>>> 73, Stefan/DK7FC
>
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