Return to KLUBNL.PL main page

Search String: Display: Description: Sort:

Results:

References: [ +subject:/^(?:^\s*(re|sv|fwd|fw)[\[\]\d]*[:>-]+\s*)*LF\:\s+wspr\-15\s+frequency\s+tolerance\s*$/: 3 ]

Total 3 documents matching your query.

1. Re: LF: wspr-15 frequency tolerance (score: 1)
Author: Minto Witteveen <[email protected]>
Date: Tue, 19 Feb 2013 22:55:08 +0100
Yes I am curious too.. I already found out that an FSK shift of 0.1746 Hz instead of 0.1831 (-4.6%) poses no problem. Also my AD9850 DDS board will creep between 0,5 and 1 Hz during a 15 minute TX pe
/rsgb_lf_group-archives/html/rsgb_lf_group/2013-02/msg00075.html (11,752 bytes)

2. Re: LF: wspr-15 frequency tolerance (score: 1)
Author: Roger Lapthorn <[email protected]>
Date: Tue, 19 Feb 2013 23:43:41 +0000
My FT817 moved about 4Hz in a 15 min 137kHz WSPR15 test and this was edgy. I think less than a couple of Hz should be OK. 73s G3XBM
/rsgb_lf_group-archives/html/rsgb_lf_group/2013-02/msg00485.html (10,003 bytes)

3. LF: wspr-15 frequency tolerance (score: 1)
Author: "Graham" <[email protected]>
Date: Tue, 19 Feb 2013 23:22:47 +0100
Anyone a clue as to the limits of wspr-15 frequency tolerance ? short / long term drift / jitter in the 15 min cycle ? Tnx -G..
/rsgb_lf_group-archives/html/rsgb_lf_group/2013-02/msg00662.html (8,745 bytes)


This search system is powered by Namazu