Reminds me of the WW2 battle of the beams and other electronic warfare methods that developed rapidly during the war. As I said before hobby radio transmitters and receivers are simple things, are small, and cost a few bucks each, for a few bucks more they could have a transceiver that handles both control and video with encryption and frequency shifting, etc. Right now, the Russians only need to jam a few narrow frequencies, like, 2.4 and 5.4gHz and 860 to 900Mhz or 480 MHz, the legal frequencies most of this stuff works on. There are plenty of techniques that can defeat jamming with the right generic transceiver used on a wide variety of drones and outputting standard control bus protocols. It would require modified transmitters and receivers on the ground too, but designs can be contracted, and mass produced at low costs. It is hard to jam a wide radio spectrum with any amount of power, especially at higher frequencies. The Ukrainians have the full radio spectrum at their disposal, and it is hard to jam it all and they have many talented electronic engineers.
Anything closer than 20km from the front would be vulnerable to regular 155mm artillery fire, no GPS required and MLRS has a longer reach. Since a jamming station is transmitting, hardened weapons can follow the signal to its source too, or it can be radio located for an artillery strike. It is good to know that the Russians can jam western weapons, I'm sure modifications are being planned or undertaken.