Three linear amplifiers “BURST-2000A” of the Club station 4U1A have been successfully updated with new water pumps. The temperature regime has been improved with intensive TX operation (including digital transmission mode). The temperature of the output transistors does not reach to + 60c, which is the norm. The noise characteristics have been also improved. The amplifiers work almost silently and very stable.
Thanks to R2DAN Alexej and OE1ZZZ Sparky for help & Updates.
