Date: Thu, 27 Oct 2016 16:56:15 +0000 (UTC)
From: M0FMT <m0fmt@yahoo.co.uk>
To: <rsgb_lf_group@blacksheep.org>
Message-ID: <1696820207.4705143.1477587375178@mail.yahoo.com>
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Subject: Re: LF: QRSS GENERATOR
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Hi Mal

What ever you do you will need to make something.

A/ Your best bet is to buy a serial to USB adaptor and then a pair of switching transistors one to key the tx through the key hole of your tx. If you are not using break in then the other transistor is need to switch the trx from tx to rx and visas versa.

B/ If your software only produces a cw audio tone for ssb rigs then you will need to make a simple amplifier and  tone detector.to 1/ switch the trx from rx to tx  with a bit of delay to allow for inter dit spaces and 2/ key the tx through the aforementioned key hole with out a delay so it tracks the keying of the tone precisely.

There are probably other ways to do it like yet again buy a serial card to pop in your PC or even a parallel card  you still have to build a simple transistor switch for the one or two functions described above. I am sure you can buy the whole kit and caboodle  to do what I have described .but I don't know where from. However construction is very simple for us Radio Amateurs. The schematic is usually found in the "Help" files associated with the software.

Hope this helps!! 

73 es GL Pete M0FMT GQRP#15097.in IO91UX 


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On Thu, 27/10/16, g3kevmal@talktalk.net <g3kevmal@talktalk.net> wrote:

 Subject: LF: QRSS GENERATOR
 To: "rsgb_lf_group@blacksheep.org" <rsgb_lf_group@blacksheep.org>, "rsgb_lf_group@yahoogroups.co.uk" <rsgb_lf_group@yahoogroups.co.uk>
 Date: Thursday, 27 October, 2016, 11:33
 
 MFMy computers do not have a
 RS232 serial port and I needed an alternative method to
 generate and key  my SSB transceivers in QRSS mode.The method used is SPECLAB to
 generate an appropriate tone , in  my case 700 Hz, which
 keys the TX in SSB MODE.Ideal method for any SSB
 transceiver or Transverter using VOX, no hardwire switching
 needed.I do not  have
 a USB/SERIAL port adaptor which of  course is another
 method but needs a hard wired line between computer and TX
 for keyingOthers may
 already be using this  method but I have  not seen any
 details on the subject
    DE MAL/G3KEV    Sent from Mail
 for Windows 10