What is an acceptable voltage range rx to tx?

  • 2
  • Question
  • Updated 3 weeks ago
  • Answered
I am powering my 6500 with an Astron 70-m using the factory supplied power cable. When monitoring the voltage with K9DUR's SDRMonitor  I see a RX voltage of  12.59 and a TX voltage of 13.45.
Is that spread acceptable?
Photo of kd5foy


  • 6 Posts
  • 2 Reply Likes

Posted 4 weeks ago

  • 2
Photo of Tim - W4TME

Tim - W4TME, Customer Experience Manager

  • 8498 Posts
  • 3181 Reply Likes
Official Response
The radio needs to have 13.8 VDC at the radio on transmit (under load at full power).  I would expect some IR (voltage) drop due to contact resistance, length of the power cable and if you are using a fuse/distribution block.  You may have to increase the supply output voltage to compensate for the IR drop.

You do not want to exceed 15 VDC st the radio.