Thursday, May 14, 2015

Multi Tx Development Progress

 

Finally, after several days of work I was able to run the first on-air tests.

Here are some of the screenshots:

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In this picture OH3T was calling CQ at 2456 (Hz).

I was remoting OH3NE and replied by clicking the CQ and then immediately moving the Tx freqeuncy to 2161 from the waterfall window. You can see that OH3T keeps on calling CQ on the same time at 2456 throughout the QSO. This is very valuable since, directives can be given and Tx message can be changed from the user interface, while running QSOs on split frequency.

This is how it looks in the waterfall. The IMD is caused by receiving rig saturating due to very close proximity to my home QTH.

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The implementation is fully scalable with dynamic data structures,  audio mixer, etc. Each QSO can be in different phase. The QSO status is maintained inside a new QSO object structure, and QSO objects are in a dynamic list in frequency order.

Still quite a bit of development to be done before I can go live with this software. For example no user interface yet… Having said that, I think thet the proof is there and this concept is worth developing further.

Hope to CU on the bands!

 

73s Toni

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