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Re: LF: interesting Opera's facts

To: <[email protected]>
Subject: Re: LF: interesting Opera's facts
From: "Markus Vester" <[email protected]>
Date: Sun, 29 Sep 2013 20:30:04 +0200
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Alex, all,
 
yes, both Opera and WSPR (and likely also JT9) can decode partial transmissions from about 50% upwards. Last night I actually started another Op-32 sequence at 22:00, but had to abort the transmission after 20 minutes when it started to rain. Anyhow pskreporter later showed a number of successful decodes with 22:33 timestamps.
 
Given a strong enough signal, opds deep search often finds a correct correlation after less than 20% of the sequence is through, creating a "look-ahead" spot in the output.
 
Best 73,
Markus

From: Alex R7NT
Sent: Sunday, September 29, 2013 7:51 PM
Subject: LF: interesting Opera's facts

Dear LF enthusiasts!

Has an interesting facts for the past night:

- I TX and RX a 15 min periods.
- at the same time, were RX Op8 and Op32
00:06  136 SM6BHZ de R7NT Op32 2149 km -29 dB in KN97LF with 0.5ERPw + 20 m Vert
00:00 - 00:15 TX WSPR-15 R7NT
23:45 - 00:00 RX R7NT
23:30 - 23:45 TX WSPR-15 R7NT
23:34 start TX Op32 by SM6BHZ

22:30  136 SM6BHZ de R7NT Op32 2149 km -32 dB in KN97LF with 0.5ERPw + 20 m Vert
22:15 - 22:30 RX R7NT
22:00 - 22:15 TX WSPR-15 R7NT
21:58 start TX Op32 by SM6BHZ

19:01  136 DF6NM de R7NT Op32  -36 dB in KN97LF
18:45 - 19:00 RX R7NT
18:30 - 18:45 TX WSPR-15 R7NT
18:29 start TX Op32 by DF6NM
ie sufficient 50% of reception (???)

Hartmut Wolff, DL-SWL and Bob, W2ZM  - CONGRATS!   First NA in EU on 73kHz!

Beacon WSPR-15 is ON 137603 15min TX / 15min RX, WsLoop, Op8/Op32 RX ON

73! Alex R7NT  136.73.ru
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