Hi Matej

Looking at your list of 24 GHz Terrestrial World Records I think there are two we have done in VK that might qualifiy as below:

73 Rex VK7MO



TROPO-DUCT ON SSB 371.9 km

Date: 01/02/2014
Time: 2210Z
Freq: 24,048.225 MHz
Mode: SSB
Distance: 371.9 km

VK3HZ/3:
Name: David Smith
Location: Johns Hill (Vic) QF22 -37.912628 145.417925
Report received: 3x1
Equipment: Thales transverter, 4W at feed, 600mm dish

VK7MO/7:
Name: Rex Moncur
Location: Devonport (Tas) QE38 -41.178410  146.384810
Report received: 3x1
Equipment: Kuhne transverter, 10W at feed, 1140mm dish

 

AIRCRAFT SCATTER ON DIGITAL 566.8 km

Date: 21/09/2014
Time: 0245Z
Freq: 24,048.225 MHz
Mode: ISCAT-B
Distance: 566.8 km

VK3HZ/3:
Name: David Smith
Location: Hesket (Vic) QF22 -37.352226 144.604914
Report received: -20
Equipment: Thales transverter, 4W at feed, 600mm dish

VK7MO/5:
Name: Rex Moncur
Location: Tungkillo (SA) PF95 -34.833171 139.127217
Report received: -11
Equipment: Kuhne transverter, 20W at feed, 1140mm dish

The contact was via Aircraft Enhancement on aircraft travelling from Adelaide to Melbourne, crossing the path between us at about midpoint. There were a number of challenges and we found we needed to pay close attention to our pointing in elevation as well as azimuth. Several smaller domestic aircraft produce no signals at all, but two larger international flights (A330 and B747) flying at higher altitudes finally provided the enhancement we needed.
More information is in our report here:
http://www.vk3hz.net/microwave/566km-24GHz.pdf