Re: LF: Opera questions

["Graham" <g8fzk@g8fzk.fsnet.co.uk>]

That's  ok Roger ..

 

Rx   speed  is  automatic  .....   the  speed  select  is  for  Tx only  - mode  select  via  frequency  band

No   PC time  lock  required  ...its free  running

OP31 expected  round  -38 dB  s/n  (ave)     OP8   ~  -32 dB 

 

G..

 

 

From: Roger Lapthorn

Sent: Friday, January 06, 2012 8:38 PM

To: rsgb_lf_group@blacksheep.org

Subject: Re: LF: Opera questions

Sorry Graham, another Opera question. Does the mode depend on PC timing in the same way WSPR does? I think not, but just checking.

73s
Roger G3XBM

On 6 January 2012 20:34, Roger Lapthorn <rogerlapthorn@gmail.com> wrote:

Thanks Graham.

Does the software sort out if it is receiving an Op8 or Op31 transmission? I.e. if I TX in Op31 do people have to listen in that speed too? I think not as I copied SM6BHZ when my switch was set to Op31.

Is it possible to establish the "effective sensitivity" when comparing Opera against WSPR, QRSS3, 30 etc? I am unsure if the bandwidths of the modes in which the S/N is shown for Opera is comparable. If more sensitive than WSPR or QRSS30 even then this is definitely a very exciting new mode for QRPers like me. It might also be fun for earth mode VLF tests too.

73s
Roger G3XBM

On 6 January 2012 20:25, Graham <g8fzk@g8fzk.fsnet.co.uk> wrote:

Ok Roger 

 

The  tx  time  is  linked to the  mode  name   OP2  = 2 mins  ,   OP15 =  15 mins   OP8    OP31   mins

 

Who's  on ?  Yes p possibly , but that  would  need  a  web programmer .. but  its  only  day  6 !

 

you  can  check the  PSK Report map  to  see   who  has  tx /rx in the  last 15  mins 

 

A book  would  be handy  as  it looks  like  its  going  to  be  popular , never  seen so  many  beacons  tx/rx  on 136 ! 

 

Left hand  screen =  local  decodes

Righ  hand  screen  =  decodes  distributed over the  web

 

Not  forgetting Mr Ros  seems to  code  exceedingly  good  codes , as the  advert  says  hi

 

73 -G..

From: Roger Lapthorn

Sent: Friday, January 06, 2012 8:10 PM

To: rsgb_lf_group@blacksheep.org

Subject: LF: Opera questions

Somewhere I must have missed some information:

1. How long does it take to send a beacon message in Opera8 and Opera31?
2. Is it possible to have something like the WSPRnet database showing stations on each band monitoring and TXing? It helps to know someone is looking!
   
3. Can we have a "read me" that explains what is meant to happen on the screen?

Tried a brief transmission on 136 into my earth electrodes as my loop antenna is down without success (so far) but just had my first decode on RX in Opera8:

20:07  SM6BHZ 136 Op8 -19 dB 951 km @ 046  - not bad for 2 ground rods and no antenna!

73s and thanks for this interesting new mode Graham.

Roger G3XBM


--
http://qss2.blogspot.com/
http://g3xbm-qrp.blogspot.com/
http://www.g3xbm.co.uk
https://sites.google.com/site/sub9khz/

--
http://qss2.blogspot.com/
http://g3xbm-qrp.blogspot.com/
http://www.g3xbm.co.uk
https://sites.google.com/site/sub9khz/

--
http://qss2.blogspot.com/
http://g3xbm-qrp.blogspot.com/
http://www.g3xbm.co.uk
https://sites.google.com/site/sub9khz/