Re: LF: Re: Experimental software for WSPR-8 and -32

["mal hamilton" <g3kevmal@talktalk.net>]

Hi Graham

I thought most were using a Linear transverter/amplifier. I did not realize this was followed by a class D or E amplifier.

for the fsk, mfsk modes and I know Opera is on/off keyed which is more suitable for my Transmitter since I do not use a transverter.

I notice on the HF bands that CW is still very popular and the other most common mode is RTTY and some PSK in fact lately there is a lot of RTTY on 18 es 24 Mhz bands

mal/g3kev

 

----- Original Message -----

From: Graham

To: rsgb_lf_group@blacksheep.org

Sent: Saturday, September 22, 2012 9:00 PM

Subject: Re: LF: Re: Experimental software for WSPR-8 and -32

That  would be WOLF   Mal  that is a  PSK  system

 

Its the  audio  to  RF  frequency   conversion  that  is  the big  problem  , unless  you have a transverter  , or a PIC-DDS   vfo  set  up, the modes  cannot  be transmitted 

 

ROS -Data  WSPR    are  MFSK  ,   non  linear TX

 

Opera is the  only  on/off  keyed  system  ...  non  linear  TX

 

G..

From: mal hamilton

Sent: Saturday, September 22, 2012 9:11 PM

To: rsgb_lf_group@blacksheep.org

Subject: Re: LF: Re: Experimental software for WSPR-8 and -32

I doubt if WSPR is as good as OPERA taking all things into consideration. WSPR needs Linear PA at 35% efficiency. Opera works with an amplifier in class D or E at 90% efficiency. CW es QRS likewise works with D or E class amp.

You have to look at the bigger picture.

To get a proper evaluation transmit the same ERP with each mode bearing in mind the inefficiency of a Linear amplifier versus a class D or E which is over twice as efficient. The way tests are being conducted at present are too haphazard to be meaningful

Twice as much DC input power is needed with a Linear amp to generate the same ERP as a class D or E.

g3kev

 

----- Original Message -----

From: Graham

To: rsgb_lf_group@blacksheep.org

Sent: Saturday, September 22, 2012 3:36 PM

Subject: Re: LF: Re: Experimental software for WSPR-8 and -32

Interesting  ...

 

Define  'simple'  ?

 

G..

From: IK1WVQ Mauro

Sent: Saturday, September 22, 2012 4:21 PM

To: rsgb_lf_group@blacksheep.org

Subject: Re: LF: Re: Experimental software for WSPR-8 and -32

Hi to all,

only a question to the experts:

is the SLOW WSPR better than the simple OPERA-32 ???

73 de Mauro K1WVQ




At 16.57 22/09/12, you wrote:

Hi Markus, LF,

It works! First reception of DF6NM in WSPR-8 here.

Timestamp Call MHz SNR Drift Grid Pwr Reporter RGrid km az
 2012-09-22 14:40   DF6NM   0.137538   0   0   JN59nj   0.5   DK7FC/8   JN49ik   175   272 
 2012-09-22 14:30   DK7FC   0.137499   +13   0   JN49ik   1   DK7FC/8   JN49ik   0   0

I have used a virtual audio cable, with success.


For those who still try without success, here is my description in simple words.

If your RX is a HF TRX at 136 kHz dial setting, then the tone of DF6NM appears at 1440 Hz, the tone of DK7FC appears at 1430 Hz.

The microphone input is used and it must be defined as the standard audio input device. This is important since the SounInput program related always to the default input.

Then soundinput generates the audio file and replays it in SoundOutput.

SoundOutput replays it to the standard audio output device, which is the virtual audio cable 1 for me. So VAC1 must be defined as the standard output device!

The sound input of the WSPR software must be set to VAC1 too.

The file wspr-8_rx.bat must be edited. If the BFO frequency in the WSPR software is 1500 Hz, then this value must be inserted for fc in the row for the soundoutput settings.

Set the value for fc for soundinput (the row below) to 1450 Hz and save the file.

Then double click wspr-8_rx.bat and wait some minutes. You may watch the small souninput and soundoutput windows...

Hope it works for others as well now.

73, Stefan7DK7FC


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