Message-ID: <C6C096B78D0344A0A39C3F7DE83CB05C@AGB>
From: "Graham" <g8fzk@g8fzk.fsnet.co.uk>
To: <rsgb_lf_group@blacksheep.org>
References: <D8274CBF88114E429BD972436D0B6198@AGB> <4F01F505.90103@kpnmail.nl> <C6284078016B41EC962C3B1A1E5CBE36@AGB> <4F02432F.5020400@kpnmail.nl>
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Date: Tue, 3 Jan 2012 01:21:42 -0000
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Subject: Re: LF: OPERA Decode    PA3ABK de PA0A
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Thanks  Jan for  running the  beacon

Unfortunately  there was   change  of  version  in the  middle  and things 
got  a  little  out of  hand ..however ,   the  psk-map  linking  is  nearly 
complete  and  the  latest  version  now  reports  the  distance .... that 
zip  will  only  have the  one version  ..

Yes  I noticed  the  OZ4KPC  , nothing  at  my  qth  .. :(

The  YV could be  version  problem  .. allsorts  of  crazy  decodes  ..

I did  see  your  signal  a  few  times but no  decode  , 20  watts  from 
this  side decoded  with  you a  few  times . i was  using the  MA1723  + 
skanti  amps  with the  audio  tone  feed  , can  use the  cw  key  , but it 
needs  a second   com port to  hold  the  station  in TX  ..or  it  runs 
break-in .. which tends to  chatter the  relays at slow  speed .

Yes  , its a little  odd  , but , the  idea was a data  mode that  could 
uses a  simple cw  tx , the race to the noise  floor  , I suppose was not 
too  unexpected , however ,  Gary  proved  that  a little   DSP  helps  to 
get the  signal  across  :)

Of course any  of the  hybrid  modulation  systems  will  give s/n 
enhancement , but  this  is a  fun for  all  mode and  works  with any  home 
made  cw  tx  or  vintage  xtal  valve set

73 G ..



--------------------------------------------------
From: "pa3abk" <pa3abk@kpnmail.nl>
Sent: Monday, January 02, 2012 11:52 PM
To: <rsgb_lf_group@blacksheep.org>
Subject: Re: LF: OPERA Decode    PA3ABK de PA0A

> Graham,
>
> Well I think it's a matter of conditions.
> In the past I could decode your ROS MF transmissions, not on a daily 
> basis, but MF is is very depending sometimes on a certain duct condition.
>
> Nicolas has very sensitive location at least he must have a low noise 
> situation..
>
> Surprisingly I received OZ4KPC rather strong, that strong that a live CW 
> QSO would be no problem.
>
> Just now @ 23:22  YV0OFP 500 Op2  came in with an increadeble +17 dB! 
> (Local pirate call??)
>
> It's a bit frustrating about Opera not knowing what it is actually doing 
> and how it works.
> Just pushing buttons and looking for results is like a magnetron dinner. 
> Could be tasteful but you don't know why.
>
> I'm using an old KWD TS-440 driving a QTX transmitter in split mode about 
> 25W in a dense urban area.
> TX on 2MHz which goes into a divider by 4 resulting 500kHz.
> Using the CW keyer. So moving the carrier to an empty slot is not 
> possible. Anyway the software decision will be divided by 4.
> A ringmixer arrangement should replace this soon. Which makes it more 
> flexible for other modes.
>
> Dutch "OFCOM" were asleep and dictated to use morse only.
> A CW id at the end of the transmission will certainly please the Dutch 
> authorties.
>
> Think this eve was usefull showing some bugs and some user wishes.
> However I can't determine how usefull and better Opera is in relation to 
> other deep noise programs.
>
> Jan/pa3abk
>
> NNNN
>
>
>
> On 2-1-2012 23:28, Graham wrote:
>> Jan,
>>
>> Still  no  decode  from you  , but see   your  reaching  F4DTL , may  be 
>> round 2300  I should  see  you ?
>>
>> When  using  audio  drive , the  software  has a  scan  facility , that 
>> places the  carrier  in a  empty slot .. with  vfo  control  , its  pot 
>> luck , but the  separation  is very  small  so it should  not be a real 
>> problem ..
>>
>> I think the  beacon  timer  is fixed  and tx  occurs  after the pre-set 
>> period
>>
>> Yes  it  will  decode  multiple signals  / both  speeds  at the  same 
>> time
>>
>> CW ... well  I am  decoding  PA0A (AA)  under the  noise for  most  of 
>> the night
>>
>> Early days  yet ..
>>
>> 73 -G ..
>>
>>
>>
>
>
> -- 
> pa3abk<->  dordrecht jo21it
>
>