[600MRG] Trans-Atlantic (TA) reception: table of decodes

Eric NO3M no3m at no3m.net
Sun Oct 12 23:07:58 CDT 2014


Jim

At least from the XJM QTH, lack of reciprocal decodes are due to the 
direction(s) my RX antenna array is pointed, which has generally been SW 
or W.  Details of the main antenna here: 
http://no3m.net/index.php?page=600m-8-circle

Not to say that looking NE would net anything either, as I have observed 
a lot of QRM/hash in that direction, presumably from neighboring houses 
clustered in that area about 1500-2500 ft from the closest array element.

73 Eric NO3M (WG2XJM)

On 10/12/2014 06:41 PM, James Hollander wrote:
> All,
>      As the trans-Atlantic (TA) season progresses and decodes get more numerous, a table helps me summarize what was happening on a busy night like last night Oct. 12.  Please excuse it if the table at the end of this post gets corrupted on upload onto the reflector.
>      Capital letters for call letters of transmitting stations are used to title the rows.  Lower-case call letters for receiving stations likewise title the columns.  The number of TA decodes of a TX station are entered at that row in the column for the receiving RX station.  If one wants to, the peak SNR for all the decodes of a given TX by a given RX on a night can also be entered that way too.
>     If anyone has been decoded TA this season by a station they have decoded TA the same night, please let me/us know about it.  So far, for example, DK7FC and WG2XJM among others have had numerous decodes on the opposite side of the Atlantic from them.  I'm trying to find if they may have decoded any same stations as decoded them by now.
>       If no reciprocal decodes, then why? Yes, the receiving station may have lower transmit power on the TA return path, but the decode levels seem to indicate enough headroom notwithstanding.  Also, some stations may be receive only, so they won't be decoded reciprocally.
>      Any other ideas why?
>
>





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