Re: Whats new in VARA 4 ? #VARA #qrp


Graham
 
Edited

Interesting  comments  from  LA gateway   using the  500  mode 

Link maintaining   traffic   [ qso]   flow  down to   -20 dB s/n  
over quite difficult  high  latitude paths  , oddly , the  latest
simulator  tests , stop at -5 db s/n  ?

-20 .. Thats  a significantly  Low  signal level, well  inside
what  could be  classed as  weak signals  mode , for  comparison
the  op05 opera beacon  30 seconds ,  and  the  'qso mode 15 chrs plain text 
60 second tx time  line.  both  run to -20 dB possible  -23 dB 

As example ,  F5ZAL is a  2 meter  fixed beacon ,   running  10  watts  to  'halo'  type  ae  with  360 deg coverage , op05 / 30 second  mode,  being  spotted at  546 Km,  at levels that  would  support the  Vara  2300  and  500  modem  

F5ZAL F5SN 2m OPERA 546 km 18:01:24
 
 
2020-07-22 19:53:18 F5ZAL AA F5SN JN27RB 0 144.475 -15 Op05_||||||||_~16dB
2020-07-22 18:24:33 F5ZAL AA F5SN JN27RB 0 144.475 -13 Op05_||||||||||||_~14dB
2020-07-22 18:05:01 F5ZAL AA F5SN JN27RB 0 144.475 -10 Op05_||||||||||||||||||_~11dB
2020-07-22 18:01:28 F5ZAL AA F5SN JN27RB 0 144.475 -16 Op05_||||||||_~16dB
2020-07-22 12:50:50 F5ZAL AA F5SN JN27RB 0 144.475 -15 Op05_||||||||||_~15dB
2020-07-22 12:29:32 F5ZAL AA F5SN JN27RB 0 144.475 -10 Op05_||||||||||||||||||||_~10dB
2020-07-22 12:17:06 F5ZAL AA F5SN JN27RB 0 144.475 -16 Op05_||||||||_~16dB
2020-07-22 12:15:20 F5ZAL AA F5SN JN27RB 0 144.475 -17 Op05_||||||_~17dB
2020-07-22 12:02:54 F5ZAL AA F5SN JN27RB 0 144.475 -16 Op05_||||||||_~16dB
2020-07-22 11:29:11 F5ZAL AA F5SN JN27RB 0 144.475 -17 Op05_||||_~18dB
2020-07-22 11:25:38 F5ZAL AA F5SN JN27RB 0 144.475 -15 Op05_||||||||||_~15dB


73- Graham
g0nbd

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