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Author Topic: Confused about Modes  (Read 976 times)

Offline K5KNT

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Confused about Modes
« on: April 06, 2018, 2143 UTC »
I'm confused about Modes as it would relate to logging a reception. I'm currently working on revising my spreadsheet in hopes of creating a database for logging my receptions.

While looking at the HFUnderground Wiki under "Signal_Identification#Mode" I see the common modes I'm use to (AM, FM, LSB, USB, CW)  along with "Non Communications Modes" like radars. Then under "DATA Signals"  there is a list of various modes like FSK, MFSK, etc.  This is where I'm getting confused. Looking at this video from Token's Youtube Channel https://www.youtube.com/watch?v=RKlLW_J8kEU the signal is identified as "MIL STD 188-141 ALE" and "USB". How would I log this if I only have one column (or field) for "Mode". Is there an additional column or field name I should add and which mode would go into which field?

I hope my questions make sense. 



Offline redhat

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Re: Confused about Modes
« Reply #1 on: April 07, 2018, 0110 UTC »
You could add one more field for modulation or encoding type.  Many of the data type modes are transmitted using SSB radios with the data modulated at the baseband level, kinda like composite stereo used for FM stations actually containing DSB-SC modulation at 38 KHz then modulated by FM.

Just a thought,

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Offline Josh

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Re: Confused about Modes
« Reply #2 on: April 07, 2018, 1758 UTC »
Mil141A mode is technically mfsk8, but is most often noted simply as ALE, and most often but not always sent as USB. That being said, there are a number of ALE modes out there, Alis, CIS ALE 150, 3g ALE (wich is psk not mfsk), it's a crazy world right now for digital modes and new modes are being added all the time.
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