Return to KLUBNL.PL main page

rsgb_lf_group
[Top] [All Lists]

LF: Good OP8 results .. Q 136 OP32 Test ?

To: <[email protected]>
Subject: LF: Good OP8 results .. Q 136 OP32 Test ?
From: "Graham" <[email protected]>
Date: Sun, 22 Jul 2012 17:09:51 +0100
Cc: <[email protected]>, <[email protected]>, "Gus" <[email protected]>
Importance: Normal
Reply-to: [email protected]
Sender: [email protected]
Remarkable   results  using   OP8  on on  136  from  Stefan,  Mike and  Tom  both  reaching  TF3HZ    1858 Km   and   RN3AGC / RX3QFM , though  not  at the  same  s/n level !, but  both  decoding  inside the  OP8 limits
 
While the condx, appeared  not to  support  TA propagation  , this  would  be a  good  opportunity  to  to  test the  OP32 mode
 
Could we ask, those using  Opera OP8   on 136 to  change to  OP32  for  any overnight  or  other  beacon  activity for comparison ?
 
OP32  offer's  a  6 dB lower  decode s/n  , but  with  X4   longer  tx 'times'  may  provide  range  extension greater than  predicted  by  s/n , the  system working  by  average  power  along the  time  line , being  able to  take  advantage of  qsb  and  flash  events ..
 
Thanks  All
 
Graham
G0NBD
 
INFO :-
 
Follow the progress of Op8 tests and other 136 activity on Mikes Blog,

http://g3xdv.blogspot.co.uk/

400 mW   ERP >>  136kHz Op8 to Iceland and Russia

Transmitted an Opera8 beacon again overnight on the 136kHz band and got reports
from RN3AGC, RX3QFM and TF3HZ (-32dB). The Icelandic station produced five
decodes between 0022 and 0202. Best distance was 2681km to RX3QFM. Highlights
were as follows:

02:02 136 G3XDV de TF3HZ Op8 1858 km -35 dB in Reykjavik
01:37 136 G3XDV de TF3HZ Op8 1858 km -31 dB in Reykjavik
01:12 136 G3XDV de TF3HZ Op8 1858 km -32 dB in Reykjavik
00:47 136 G3XDV de TF3HZ Op8 1858 km -32 dB in Reykjavik
00:47 136 G3XDV de RX3QFM Op8 2681 km -33 dB in KO91OO
00:22 136 G3XDV de TF3HZ Op8 1858 km -32 dB in Reykjavik
00:22 136 G3XDV de RN3AGC Op8 2483 km -34 dB in Moscow
23:57 136 G3XDV de RN3AGC Op8 2483 km -31 dB in Moscow
<Prev in Thread] Current Thread [Next in Thread>