JT65-HF

In an attempt to brush up on my JT65 message techniques, I shall try a few QSOs today with JT65-HF (basically JT65A). I've used this mode before successfully. Then it will be back to 2m and JT65B to see if I can make that work.

JT65 is a very weak signal mode for 2-way communications, unlike WSPR which is essentially a 1-way  beaconing mode but WSPR will work with even weaker signal levels.

UPDATE 1645z: Plenty of EU and USA stations heard on JT65-HF around 28.076MHz,  but none raised for a QSO.  Moved to 28.078MHz for JT9-1 but band was dropping out.  Will try on HF again tomorrow AM.

JT65A on HF

Having seen the article on how to do this in the latest edition of Practical Wireless, I have installed the software and taken a listen/look. Main issue seems to be that the AGC in the FT817 is fierce and with close-by PSK31 signals it kills the gain of weak JT65A signals nearby. Anyway, it looks a useful mode. For HF use, download the HF tailored version at http://jt65-hf.sourceforge.net/. Not yet had a 2-way QSO but will soon when I've got the hang of this.