30m is my favourite band for SOTA. Propagation is often very good and I can usually count on it for enough QSOs to qualify a summit with 5W to 10W CW and my EFHW only a few metres off the ground.
I tend to operate on or near 10.1175MHz. Yesterday, I think all four of my 30m QSOs were interrupted by a single 10- to 15-second burst of strong data centred on that frequency. Fortunately, all of my chasers all over Europe (several with weak signals) were patient enough to wait until the data transmission had stopped so we could complete our exchanges (thank you!).
I can’t say the mid-QSO data bursts were deliberate – maybe the data-mode operator couldn’t hear me. Or, is it some DM ops don’t actually listen by ear to a frequency before transmitting and just check their waterfall plot?
In any case, I thought EU countries had implemented the IARU Region 1 band plan recommendations with CW 10.100 to 10.130 and narrowband data modes 10.130 to 10.150. Is that not the case?
I will probably put the experience down to bad luck, but do other 30m CW ops have this or similar problems?