RE: LF: Dual OPERA Beacon 500K OP2+OP15

[Rik Strobbe <Rik.Strobbe@fys.kuleuven.be>]

Gary,

 

is there any documentation about the Opera coding ?

If not this mode would be illegal for radioamateurs, at least in Belgium. 

 

73, Rik  ON7YD - OR7T

 

---

Van: owner-rsgb_lf_group@blacksheep.org [owner-rsgb_lf_group@blacksheep.org] namens Gary G4WGT [g4wgt@tiscali.co.uk]
Verzonden: donderdag 5 januari 2012 22:18
Aan: rsgb_lf_group@blacksheep.org
Onderwerp: RE: LF: Dual OPERA Beacon 500K OP2+OP15

Hi Minto,

Sorry that you seem to be experiencing a problem from the Opera beacons.

There should be no QRM from Opera as the Tx sub-band is 501.300 to 501.700kHz & would not interfere with your CW QSO's on 502.000 & 502.500kHz.

Also the Opera software will not Tx on an occupied freqency due to it's agile frequency feature, it will automatically QSY to a clear frequency within it's sub-band before Txing.

I am monitoring the frequency & I have not seen any Opera signal outside the limits which I have mentioned above in this email.

73, Gary - G4WGT.

 

> From: minto.witteveen@gmail.com
> To: rsgb_lf_group@blacksheep.org
> Date: Thu, 5 Jan 2012 21:47:02 +0100
> Subject: Re: LF: Dual OPERA Beacon 500K OP2+OP15
>
> I am not convinced that this Opera beaconing (experiment??) is a good thing,
> that is to say not as it is currently conducted on 500.
> For some reason the frequencies that are used are smack in the middle of the
> ‘normal’ CW part of 500. Why not go to the (upper) band edge like WSPR?
> Already I have experienced some annoying interference, after calling CQ on
> 502 and/or 502.5 I heard more than one Opera sig on 502.0 and 502.2 – right
> through my CQ. Probably no operator listening or Opera not checking the QRG?
> Just now I heard PA3CW calling CQ on 502.00. Halfway through his CQ an Opera
> beacon started ON EXACT THE SAME FREQUENCY. Dick PA3CW did respond (with
> ...--..) to the CW-like Opera beacon but to no avail..
>
> So please let’s agree on the band edges for these types of beacons. They
> have their use and are fun to work/play with, but as I understand it they do
> not need much bandwidth so moving to a confined area the band edge(s) should
> not be a problem.
> And select one. I see (hear) an Italian beacon day and night somewhere above
> 501. Another 500 Hz of the 3 KHz allocated lost for CW.
>
> Regards, Minto pa3bca
>
>
> --------------------------------------------------------------------------
> Ceterum censeo Carthaginem delendam esse
>
> From: Graham
> Sent: Thursday, January 05, 2012 18:35
> To: rsgb_lf_group@blacksheep.org
> Subject: LF: Dual OPERA Beacon 500K OP2+OP15
>
> All
>
> Running dual beacon OP 2 and OP15
>
> on 500K usb dial set
>
> 5 watts carrier power per mode/carrier to 40 ft top loaded vertical
> erp ? anyone guess ?
>
> Reports welcome
>
> 73 -Graham
> G0NBD
>
>
>