• You can now help support WorldwideDX when you shop on Amazon at no additional cost to you! Simply follow this Shop on Amazon link first and a portion of any purchase is sent to WorldwideDX to help with site costs.

Yaesu FT 840 Fan Noise Reduction

AudioShockwav

Extraterrestrial
Staff member
Apr 6, 2005
8,966
8,635
593
Nor Cal Sierra Nevada
This circuit allows the entrance of the fan to 50% of its speed thus slowing the time Yaesu FT-840 triggers the circuit to its thermal entry at top speed. This effect reduces the noise This circuit allows the entrance of the fan to 50% of its speed thus slowing the time Yaesu FT-840 triggers the circuit to its thermal entry at top speed. This effect reduces the noise of the device since its performance at high speed is not to be so ordered.
 

Attachments

  • 4736_Fan_Noise_FT-840.gif
    4736_Fan_Noise_FT-840.gif
    34.8 KB · Views: 363

dxChat
Help Users
  • No one is chatting at the moment.
  • dxBot:
    Tucker442 has left the room.
  • @ BJ radionut:
    LIVE 10:00 AM EST :cool:
  • @ Charles Edwards:
    I'm looking for factory settings 1 through 59 for a AT 5555 n2 or AT500 M2 I only wrote down half the values feel like a idiot I need help will be appreciated