RE: LF: OPERA Question

[Gary G4WGT <g4wgt@tiscali.co.uk>]

Hi Stefan,
 
If you download & install Opera you can click "Frequency" on the top menu bar. This dropdown will show you the USB dial frequency & the decode frequency range for each band.
 
Opera is not intended for random frequency use as the decode frequency range is small. If you do choose another USB dial frequency for a test or similar you will need to notify other users of your non-standard USB dial frequency or no one will know you are transmitting there, very similar to WSPR.
 
73.
 
Gary - G4WGT.
 

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Date: Tue, 10 Jul 2012 15:21:18 +0200
From: Stefan.Schaefer@iup.uni-heidelberg.de
To: rsgb_lf_group@blacksheep.org
Subject: LF: OPERA Question

Opera experts,

I have a simple question to Opera. If the program keys a PTT of a PA like a CW key and the operator can choose the frequency where he transmits, what is the range of frequencies where a decode can be expected from someone who set his RX to e.g. 477 kHz? Is it a USB bandwidth, so maybe from 300...3000 Hz, i.e. 477.3...480 kHz?? Can i completely free decide where i want to transmit on?
And if someone decides to let Opera choose the transmit frequency in that band (e.g. by using a HF TRX and a transverter), where does the program usually transmit. Is is accidentially oder is the range much more limited?

73, Stefan/DK7FC


Am 10.07.2012 14:29, schrieb M0FMT:

Hi Graham

 

I have found that if I run 24 Watts no body hears me. If I run one Watt people hear me?? If I boost the 1 Watt rig to 4 Watts same rig people don't hear me...... dohh! It may be RF into the Opera PIC keyer? I will next time try screening the PIC keyer. But the thing is my PC decodes everything.... why?? Any ideas?

 

73 es GL Pete M0FMT IO91UX

From: M0FMT <m0fmt@yahoo.co.uk>
To: "rsgb_lf_group@blacksheep.org" <rsgb_lf_group@blacksheep.org>
Sent: Tuesday, 10 July 2012, 11:11
Subject: Re: LF: OPERA MONITOR Now ?

TNX FER RPRT

Am now sending op4 on 500 at 1/2 intervals on the hour and 1/2 hour very approx. Can you report please if available will try to keep it on most of afternoon.

73 es GL Pete M0FMT IO91UX

From: Graham <g8fzk@g8fzk.fsnet.co.uk>
To: rsgb_lf_group@blacksheep.org
Sent: Monday, 9 July 2012, 18:51
Subject: Re: LF: OPERA MONITOR Now ?

Pete

 

RX set  500.000  usb ,   running   OP4  and   WSPR  rx  at the  moment 

 

GL !... G ..

From: M0FMT

Sent: Monday, July 09, 2012 6:26 PM

To: rsgb_lf_group@blacksheep.org

Subject: LF: OPERA MONITOR Now ?

Hi all

While you are all testing Graham's theory on optimum band usage could you report my OP4 transmissions. I am using the stand alone PIC 'JNT designed Opera keyer switching my all Valve (Tube for our Cousins) TX.

Power now increased to four (4) Watts O/P from the original 1Watt at the antenna up lead. Antenna up lead abt 40 ft x 128ft long E/W. from IO91UX.

73 Pete M0fmt.

73 es GL Pete M0FMT IO91UX