Hi Rik & Gerhard,
When Rik makes his CQ call I will attempt to make a 2 way contact using the
same settings.
Any reports will be welcome.
73
Gary - G4WGT.
-----Original Message-----
From: [email protected]
[mailto:[email protected]] On Behalf Of Rik Strobbe
Sent: 06 May 2009 21:04
To: [email protected]
Subject: Re: AW: AW: AW: LF: RE: rtty test
Hello Gerhard,
tonight I will call CQ on 503.5kHz starting 20:30 til 21:20 every 10
minutes.
Same mode as yesterday.
73, Rik ON7YD - OR7T
Quoting "Beckmann, Gerhard" <[email protected]>:
> Hello Rik,
>
> Sorry, but wasn't able to answer earlier.
> Well actually, please let me know when you will prepare the next RTTY test
> transmission and I will try to decode your signals. I am looking forward
to
> verify a new mode.
>
> Vy 73 de Gerhard / DK6NI
>
> ===================================
>
>
> -----Ursprüngliche Nachricht-----
> Von: [email protected]
> [mailto:[email protected]] Im Auftrag von Rik Strobbe
> Gesendet: Dienstag, 5. Mai 2009 23:47
> An: [email protected]
> Betreff: Re: AW: AW: LF: RE: rtty test
>
> Hello Gerhard,
>
> I will do a last transmission at 22:00 UTC
> Otherwise we can try tomorrow (WX permitting)
>
> 73, Rik
>
> Quoting "Beckmann, Gerhard" <[email protected]>:
>
>>
>>
>> Hello Rik,
>>
>> I have just installed MMTTY and playing with the settings and need one
> more
>> chance for decoding....
>>
>> Vy 73 de Gerhard // DK6NI
>>
>> ===========
>>
>>
>> -----Ursprüngliche Nachricht-----
>> Von: [email protected]
>> [mailto:[email protected]] Im Auftrag von Rik Strobbe
>> Gesendet: Dienstag, 5. Mai 2009 22:56
>> An: [email protected]
>> Betreff: Re: AW: LF: RE: rtty test
>>
>> Hello Gerhard,
>>
>> thanks for the report, did you try to decode the RTTY ?
>>
>> 73, Rik ON7YD - OR7T
>>
>> Quoting "Beckmann, Gerhard" <[email protected]>:
>>
>>>
>>> Hello Rik,
>>>
>>> Your signal is fine visible on my waterfall, but with deep QSB-Phases.
>>>
>>> Vy 73 de Gerhard // DK6NI (JN59LN)
>>>
>>> ==============================
>>>
>>>
>>>
>>>
>>>
>>> -----Ursprüngliche Nachricht-----
>>> Von: [email protected]
>>> [mailto:[email protected]] Im Auftrag von Rik Strobbe
>>> Gesendet: Dienstag, 5. Mai 2009 22:15
>>> An: [email protected]
>>> Betreff: RE: LF: RE: rtty test
>>>
>>> Faint traces of my signal are showing up on the G4WGT grabber.
>>> I will transmit every 10 minutes starting 20:40 UTC until 21:30 UTC
>>> and listen inbetween.
>>>
>>> 73, Rik ON7YD - OR7T
>>>
>>> Quoting Rik Strobbe <[email protected]>:
>>>
>>>> Hello Gary, LF,
>>>>
>>>> I just had a first transmission.
>>>> I will try short transmissions every 10-15 minutes or so until my
>>>> signal shows up un your grabber. Then I will start longer
transmissions.
>>>>
>>>> 73, Rik ON7YD - OR7T
>>>>
>>>> Quoting Gary - G4WGT <[email protected]>:
>>>>
>>>>> OK Rik,
>>>>>
>>>>> I will look at the settings you describe in MTTY to allow me to
> monitor,
>>> I
>>>>> normally use TrueTTY.
>>>>>
>>>>> Thanks for the info.
>>>>>
>>>>> Cheers,
>>>>>
>>>>> Gary - G4WGT.
>>>>>
>>>>> -----Original Message-----
>>>>> From: [email protected]
>>>>> [mailto:[email protected]] On Behalf Of Rik Strobbe
>>>>> Sent: 05 May 2009 16:26
>>>>> To: [email protected]
>>>>> Subject: RE: LF: RE: rtty test
>>>>>
>>>>> Gary, LF,
>>>>>
>>>>> I just had a look at MMTTY and it seems pretty easy to set it to 50Hz
>>>>> shift and 22Bd baudrate.
>>>>> The way I did it:
>>>>> 1. As a start select 23Hz RTTY (in "Profiles")
>>>>> 2. In "Options" select "Setup MMTTY"
>>>>> 3. In the tab "Demodulator" change "Shift" from 23 tot 50 (it is not
>>>>> a standard option, but you can just type 50 into the field)
>>>>> 4. In the tab "Demodulator" change "Mark" to a suitable value (that
>>>>> is the audio frequency you get)
>>>>> 5. In the tab "Demodulator" change "Discriminator Type" from VCO to
FIR
>>> BPF
>>>>> 6. In the tab "Demodulator" change "Tap" from 72 to 256
>>>>> 7. In the tab "Demodulator" click on "OK"
>>>>> 8. In the tab "Decode" change "BaudRate" from 45 tot 22 and click "OK"
>>>>> Steps 5-7 set demodulator type, the values above are the result of
>>>>> some brief dry tests and can most likely still be optimized. You can
>>>>> do that in the main screen.
>>>>>
>>>>> If WX permits (no rain) I intend to run some tests between 20:30 and
>>>>> 21:30 UTC on 503.5kHz in mode USB (so if you listen in LSB don't
>>>>> forget to select reverse mode).
>>>>> I will announce the exact hours later this evening.
>>>>> Between transmissions I will listen on the same frequency.
>>>>>
>>>>> All reports (or replies) are welcome.
>>>>>
>>>>> 73, Rik ON7YD - OR7T
>>>>>
>>>>> At 14:14 5/05/2009, you wrote:
>>>>>> Hello Gary,
>>>>>>
>>>>>> I had a closer look at the 23Hz shift option of MMTTY and it seems
>>>>>> to run at 45Bd what is on the edge regarding the shift/baudrate
>>>>>> ratio. That is most likely the reason why it is not so robust.
>>>>>> Using 45Bd at 85Hz shift would exceed the 100Hz bandwidth limit.
>>>>>> I guess the best option for RTTY would be a shift around 50Hz and a
>>>>>> lower baudrate (say 20Bd) what would well fit within the 100Hz
>>>>>> bandwidth and would have a sufficient shift/baudrate ratio to
>>>>>> provide a robust signal.
>>>>>> I will see if I can get such signal out of MMTTY and - if time
>>>>>> permits - run some tests tonight.
>>>>>>
>>>>>> 73, Rik ON7YD - OR7T
>>>>>>
>>>>>> At 12:22 5/05/2009, you wrote:
>>>>>>> Hi Rik,
>>>>>>>
>>>>>>> You have experienced the same as I did with 23Hz shift, the signal
>>> needs
>>>>> to
>>>>>>> be very strong to decode. It was in the last 2 minutes that I got
the
>>>>>>> partial decode.
>>>>>>>
>>>>>>> A much better shift to use is the 85Hz which will fit into your
spec.
>>>>>>>
>>>>>>> I have had good QSO's with Chris G3XIZ in Biggleswade both of us
> using
>>>>> 85Hz.
>>>>>>>
>>>>>>> Give that a try next time & I believe I will get a much better
decode
>>>>>>> judging by the strength of your signal.
>>>>>>>
>>>>>>> 73
>>>>>>>
>>>>>>> Gary - G4WGT.
>>>>>>>
>>>>>>> -----Original Message-----
>>>>>>> From: [email protected]
>>>>>>> [mailto:[email protected]] On Behalf Of Rik Strobbe
>>>>>>> Sent: 04 May 2009 22:37
>>>>>>> To: [email protected]
>>>>>>> Subject: Re: LF: RE: rtty test
>>>>>>>
>>>>>>> Hello Gary,
>>>>>>>
>>>>>>> call the is almost right, locator completely.
>>>>>>> But not really impressive for 500mW ERP.
>>>>>>> I could see my signal on your grabber, some slow QSB but strong for
>>>>>>> the last 2 minutes or so.
>>>>>>> I used MTTY with the profile "23Hz RTTY (MTTY)" without any further
>>>>>>> changes, not sure that this is the best mode.
>>>>>>> So any advice is welcome.
>>>>>>> I have also installed MultiPSK, but am still overwhelmed by the
> colors
>>>>>>> and options.
>>>>>>> I am allowed to use any digital mode as long as I stick to max.
100Hz
>>>>>>> bandwidth.
>>>>>>>
>>>>>>> 73, Rik ON7YD - OR7T
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>> Quoting Gary - G4WGT <[email protected]>:
>>>>>>>
>>>>>>>> Hi Rik,
>>>>>>>>
>>>>>>>> This is the best I could do, it looks like almost your call sign &
>>>>> locator
>>>>>>>> :-
>>>>>>>>
>>>>>>>> RHTQHTST DE TC(TIOJ7T OR1T JO20IX
>>>>>>>>
>>>>>>>> 73
>>>>>>>>
>>>>>>>> Gary - G4WGT.
>>>>>>>>
>>>>>>>> -----Original Message-----
>>>>>>>> From: [email protected]
>>>>>>>> [mailto:[email protected]] On Behalf Of Rik
Strobbe
>>>>>>>> Sent: 04 May 2009 21:10
>>>>>>>> To: [email protected]
>>>>>>>> Subject: LF: rtty test
>>>>>>>>
>>>>>>>> dear all,
>>>>>>>>
>>>>>>>> I will run a short (10 minute) rtty test (23Hz shift) on 503.500 at
>>>>> 21UTC
>>>>>>>> Reports and/or reply welcome.
>>>>>>>>
>>>>>>>> 73, Rik ON7YD - OR7T
>>>>>>>>
>>>>>>>>
>>>>>>>>
>>>>>>
>>>>>
>>>>>
>>>>>
>>>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>
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