Message-ID: <20090506223954.39s1i4offfb4w44g@webmail4.kuleuven.be>
Date: Wed, 06 May 2009 22:39:54 +0200
From: Rik Strobbe <Rik.Strobbe@fys.kuleuven.be>
To: rsgb_lf_group@blacksheep.org
References: 	<200904031959.n33Jxrvn028438@smtpa1.mediabeam.com><BLU146-W15B01E5C9585C664E3CD90CF890@phx.gbl><20090504220936.59jcwemhlo004wkk@webmail4.kuleuven.be><01a401c9ccfd$f04e8640$6401a8c0@asus><20090504233650.cpq3ip6kir688ogo@webmail4.kuleuven.be><005d01c9cd6b$620ddc00$6401a8c0@asus><20090505121435.9F59DF3863@smtps02.kuleuven.be><20090505152548.71C37F3865@smtps02.kuleuven.be><00df01c9cdac$e9a407c0$6401a8c0@asus><20090505214422.o47capffyyb4oog0@webmail4.kuleuven.be><20090505221513.oso5g5yn6csgwsw4@webmail4.kuleuven.be><E6471A24F0BE47A19C776A2EEF8581AB@2a2d7ed321c6425><20090505225610.msbh1wypf7cws8ks@webmail4.kuleuven.be><DC291D3A78A34E508060704C561EE54F@2a2d7ed321c6425><20090505234705.h93clwtj8o8o8kg4@webmail4.kuleuven.be><44C635CA641E4CA2BFEAEB12F09E3436@2a2d7ed321c6425>
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Gary, Gerhard,

right now (20:35 UTC) I can see traces of my signal on the G3YXM =20
grabber and strong signals from Gary.

73, Rik

on the

Quoting Gary - G4WGT <g4wgt@tiscali.co.uk>:

> Hi Rik & Gerhard,
>
> When Rik makes his CQ call I will attempt to make a 2 way contact using th=
e
> same settings.
>
> Any reports will be welcome.
>
> 73
>
> Gary - G4WGT.
>
> -----Original Message-----
> From: owner-rsgb_lf_group@blacksheep.org
> [mailto:owner-rsgb_lf_group@blacksheep.org] On Behalf Of Rik Strobbe
> Sent: 06 May 2009 21:04
> To: rsgb_lf_group@blacksheep.org
> 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" <beckmann.erlangen@freenet.de>:
>
>> Hello Rik,
>>
>> Sorry, but wasn't able to answer earlier.
>> Well actually, please let me know when you will prepare the next RTTY tes=
t
>> transmission and I will try to decode your signals. I am looking forward
> to
>> verify a new mode.
>>
>> Vy 73 de Gerhard  /  DK6NI
>>
>> =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D
>>
>>
>> -----Urspr=FCngliche Nachricht-----
>> Von: owner-rsgb_lf_group@blacksheep.org
>> [mailto:owner-rsgb_lf_group@blacksheep.org] Im Auftrag von Rik Strobbe
>> Gesendet: Dienstag, 5. Mai 2009 23:47
>> An: rsgb_lf_group@blacksheep.org
>> 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" <beckmann.erlangen@freenet.de>:
>>
>>>
>>>
>>> Hello Rik,
>>>
>>> I have just installed MMTTY and playing with the settings and need one
>> more
>>> chance for decoding....
>>>
>>> Vy 73 de Gerhard  //  DK6NI
>>>
>>> =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D
>>>
>>>
>>> -----Urspr=FCngliche Nachricht-----
>>> Von: owner-rsgb_lf_group@blacksheep.org
>>> [mailto:owner-rsgb_lf_group@blacksheep.org] Im Auftrag von Rik Strobbe
>>> Gesendet: Dienstag, 5. Mai 2009 22:56
>>> An: rsgb_lf_group@blacksheep.org
>>> 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" <beckmann.erlangen@freenet.de>:
>>>
>>>>
>>>> Hello Rik,
>>>>
>>>> Your signal is fine visible on my waterfall, but with deep QSB-Phases.
>>>>
>>>> Vy 73 de Gerhard // DK6NI  (JN59LN)
>>>>
>>>> =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D
>>>>
>>>>
>>>>
>>>>
>>>>
>>>> -----Urspr=FCngliche Nachricht-----
>>>> Von: owner-rsgb_lf_group@blacksheep.org
>>>> [mailto:owner-rsgb_lf_group@blacksheep.org] Im Auftrag von Rik Strobbe
>>>> Gesendet: Dienstag, 5. Mai 2009 22:15
>>>> An: rsgb_lf_group@blacksheep.org
>>>> 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 <Rik.Strobbe@fys.kuleuven.be>:
>>>>
>>>>> 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 <g4wgt@tiscali.co.uk>:
>>>>>
>>>>>> 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: owner-rsgb_lf_group@blacksheep.org
>>>>>> [mailto:owner-rsgb_lf_group@blacksheep.org] On Behalf Of Rik Strobbe
>>>>>> Sent: 05 May 2009 16:26
>>>>>> To: rsgb_lf_group@blacksheep.org
>>>>>> 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: owner-rsgb_lf_group@blacksheep.org
>>>>>>>> [mailto:owner-rsgb_lf_group@blacksheep.org] On Behalf Of Rik Strobb=
e
>>>>>>>> Sent: 04 May 2009 22:37
>>>>>>>> To: rsgb_lf_group@blacksheep.org
>>>>>>>> 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 <g4wgt@tiscali.co.uk>:
>>>>>>>>
>>>>>>>>> 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: owner-rsgb_lf_group@blacksheep.org
>>>>>>>>> [mailto:owner-rsgb_lf_group@blacksheep.org] On Behalf Of Rik
> Strobbe
>>>>>>>>> Sent: 04 May 2009 21:10
>>>>>>>>> To: rsgb_lf_group@blacksheep.org
>>>>>>>>> Subject: LF: rtty test
>>>>>>>>>
>>>>>>>>> dear all,
>>>>>>>>>
>>>>>>>>> I will run a short (10 minute) rtty test (23Hz shift) on 503.500 a=
t
>>>>>> 21UTC
>>>>>>>>> Reports and/or reply welcome.
>>>>>>>>>
>>>>>>>>> 73, Rik  ON7YD - OR7T
>>>>>>>>>
>>>>>>>>>
>>>>>>>>>
>>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>
>>>>
>>>>
>>>>
>>>>
>>>>
>>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>
>>
>>
>>
>>
>>
>>
>
>
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