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Author Topic: FT8 and multstream Fox mode for testing (10m-160m)  (Read 131 times)

W4VKU

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FT8 and multstream Fox mode for testing (10m-160m)
« on: March 17, 2023, 12:25:05 PM »

getting the Dxpedition amplifiers and radios serviced this time around and would like to check and see if it is alright to setup separate frequency, apart from the standard FT8 frequencies and run FH in atleast a 2 channel multi-stream mode to test the resiliency of the hardware.
Just checking to ensure that i don't get called names on the band or on the cluster :), being new to FT8 :)

Any guidance? Happy to discuss offline as well.

73
krish
w4vku
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W9IQ

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Re: FT8 and multstream Fox mode for testing (10m-160m)
« Reply #1 on: March 17, 2023, 12:46:39 PM »

You probably won't have many hound responses since the F/H mode is not self evident. You might as well just test with F/H transmissions into a dummy load to stress test the amplifiers.  Keep in mind that multiple streams are no harder on the amp or transceiver than a single stream although it will make an IMD difference. If you need hound responses, use another local computer / transceiver into another dummy load.

Don't forget to test your DXpedition time synchronization method. Deliberately offset your fox clock and see if your GPS dongle or other method properly syncs it to the correct time. A recent DXpedition seems to have neglected this critical issue...

 Glenn W9IQ
« Last Edit: March 17, 2023, 12:53:40 PM by W9IQ »
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- Glenn W9IQ

God runs electromagnetics on Monday, Wednesday and Friday by the wave theory and the devil runs it on Tuesday, Thursday and Saturday by the Quantum theory.

W1VT

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Re: FT8 and multstream Fox mode for testing (10m-160m)
« Reply #2 on: March 17, 2023, 12:57:54 PM »

The week of April 12th is North Carolina's turn for W1AW/4 in the ARRL Volunteers on the Air.
If the band is wide open to Japan you may be able to run multiple streams.

https://vota.arrl.org/w1awPortable.php
Info on the coordinators for each state.
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K0UA

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Re: FT8 and multstream Fox mode for testing (10m-160m)
« Reply #3 on: March 19, 2023, 09:35:25 AM »

Just run Multistream MSHV on the regular frequencies and point toward japan. When the japanese air attack comes you will be equipped to handle them that way. I suggest 15 meters about sundown.  Have fun. Should be better than twin 40 mike mike Bofors guns. :)
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73  James K0UA
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