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Intimated tones 7080am

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radioreddz:
Is anyone listing that can tune to frequency 7080 am and identify these intermittent tones at 01:06 I have heard them on other frequencies as well.

Token:
Without a recording or at least a screen shot the best anyone can do is a WAG.

However, 7076 kHz USB is where you find the JT65 mode in use, so I would bet that is what you have, hams using the JT65 weak signal mode.

T!

Josh:
A few kc above the jt65ers on any given HAM band you'll also find jt9 ops. This is a similar mfsk signal to jt65 but the tones dwell longer on each shift.

Token:

--- Quote from: Josh on July 24, 2016, 1907 UTC ---A few kc above the jt65ers on any given HAM band you'll also find jt9 ops. This is a similar mfsk signal to jt65 but the tones dwell longer on each shift.

--- End quote ---

True, but because JT9 uses fewer, and much smaller, steps, many people don't even hear the changes unless they listen closely.  Were the JT65 steps are normally very noticeable.

Later I will put up a video of both JT65 and JT9, for exemplars.

(edit)  I have uploaded a video of JT65 and JT9 on 40 meters.  The first three minutes are correctly tuned in USB mode for the JT65 (first 2 minutes) and then JT9 (third minute) signals.  Minutes 4 and 5 are tuned in AM mode.

https://www.youtube.com/watch?v=XDlKl_GTPKU

radioredzz, does this sound like what you hear?

T!

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