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Re: LF: JT9 QSO on 475kHz?

To: [email protected]
Subject: Re: LF: JT9 QSO on 475kHz?
From: Tobias DG3LV <[email protected]>
Date: Sat, 19 Oct 2013 21:36:14 +0200
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Hi Rik !

Sven and me had been working on 1380 Hertz Audio and the standard 474.200 kHz Dial. The Idea behind was, that there might be some Hams around seeing a signal just below the WSPR passband and beeing curious enough to explore whats going on there. Just to raise some more stations to join in.

73 de dg3lv Tobias

Am 19.10.2013 21:07, schrieb Rik Strobbe:
Hello Tobias,

  what frequency do you use for JT9?

73, Rik  ON7YD - OR7T
________________________________________
Van: [email protected] [[email protected]] 
namens Tobias DG3LV [[email protected]]
Verzonden: zaterdag 19 oktober 2013 20:28
Aan: [email protected]
Onderwerp: Re: LF: JT9 QSO on 475kHz?

Hi Rik !

A second station will be Sven DF2FF, we have just done some tests with
the new version of WSJT-X and had some QSOs. He is using a Softrock
RxTx6.2 as I do.
After 20:00h UTC conditions might be good enough to try some QSOs?

73 de dg3lv Tobias

Am 19.10.2013 19:05, schrieb Rik Strobbe:
Hi Tobias,

I don't have a specific day/hour in mind. Let's see if there is some more 
response.
About "linear operation": I assume that you refer to frequency conversion. The 
amplifiers do not have to be linear for JT2 (and WSPR). In fact I do use a class D 
push-pull PA.

73, Rik  ON7YD - OR7T

________________________________________
Van: [email protected] [[email protected]] 
namens Tobias DG3LV [[email protected]]
Verzonden: zaterdag 19 oktober 2013 18:13
Aan: [email protected]
Onderwerp: Re: LF: JT9 QSO on 475kHz?

Hi Rik !

Yes, would be nice to have some QSOs again. At what time did you intend
to begin trying a QSO?

There should be a couple of stations around, which are capable of linear
operation.

Just updated my WSJT-X installation with
latest version of WSJT-X (dated 4.October 2013):
http://physics.princeton.edu/pulsar/K1JT/WSJTX_121r3590.exe

latest Manual rev 1.2, (dated 16.August 2013)
http://physics.princeton.edu/pulsar/K1JT/WSJT-X_Users_Guide_v1.2.pdf

73 de dg3lv Tobias

Am 19.10.2013 11:28, schrieb Rik Strobbe:
Dear all,

there is a lot of WSPR activity on 475kHz recently.

Checking wsprnet.org I noticed that I copied 34 stations and was copied
by 67 stations. 25 of these were copied by me and copied me, so
potential QSO partners in JT9-2 mode.

Anyone interested in some JT9 tests ?

It would be nice to make some QSO's in this mode.

73, Rik  ON7YD - OR7T





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