Well after having the new 13ele tonna up for a couple of weeks I recently noticed a signal around 144.430Mhz. After some quick research I discovered it to be beacon GB3VHF which outputs a JT65B signal.
I can copy the beacon on the beam S5-S6 seemingly 24hrs a day, so quite a good path between us. SNR’s of -1dB to -2dB in WSJT-X are the norm. I decided to listen with the x510n collinear vertical and to my surprise I could decode it with varying snr’s.
I ran it from around 3am on the 21/05/18 through to mid day, recorded the results and plotted them. You can easily see that the SNR improved from around 6am through to around 8:30am.