Message-ID: <4F846232.6040508@iup.uni-heidelberg.de>
Date: Tue, 10 Apr 2012 18:39:14 +0200
From: =?ISO-8859-1?Q?Stefan_Sch=E4fer?= <Stefan.Schaefer@iup.uni-heidelberg.de>
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To: rsgb_lf_group@blacksheep.org
References: <4F8457C5.30350.690C74C@mike.dennison.ntlworld.com>
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Subject: Re: LF: QRSS Tx on SpecLab?
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Hi Mike,

Some months ago i was in a similar situation and asked myselfe the same 
questions. But since i wanted to run the transmitter from a remote link, 
there was no alternative to learn how it is done in SpecLab.
If you intend to run your TX in QRSS, you can combine both programs, 
i.e. you can use the QRS program to key the PA and let SpecLab generate 
a permanent tone.
SpecLab does not release the PTT (RS232) during the dashes and dots, 
unfortunately. It releases the PTT after transmitting all characters in 
the text box of the digimode terminal. So i you like to have a PTT, e.g. 
for savety reasons, you need to build a VOX or so. But, as an example, 
if you want to run a CW beacon, the RS232 PTT would be inacurate anyway. 
So it is better to use the SpecLab PTT combined with a VOX, i.e. a 
circuit that generates a 2nd PTT from the audio tone. Only if both PTTs 
are H, then the PA driver stage is enabled. I added a watchdog in this 
circuit that limits each key down time to 8 minutes, just to prevent a 
permanent transmission in case the PC hung up.
Actually it's not so complex, just a few RC time constants, 2x 4093 and 
CNY17/4 optocouplers.

You still can use the QRS program if you like but both programs will 
work, even in DFCW and hell mode. I like the QRS program too because it 
is easy to define the start time and the number of repetitions.

73, Stefan/DK7FC

Am 10.04.2012 16:54, schrieb Mike Dennison:
> Having sorted out some useful settings for QRSS receive, I thought I
> would try transmitting with SpecLab, but have come across many
> confusing menus, mostly involving audio tones.
>
> But I don't use audio tones. I normally directly key the Tx using
> ON7YD's excellent 'QRSS' program.
>
> I can configure SpecLab so the COM1 port will switch the key on and
> off (using a helpful TEST button), but I can't find anything that
> will connect a text input to the COM port.
>
> Does anyone have some simple instructions for this? Or is SpecLab
> just for audio-based transmitting? Am I better off continuing to use
> the ON7YD program?
>
> Mike, G3XDV
> ==========
>
>