SSDR- Maximum RF power value change- a problem

  • 1
  • Problem
  • Updated 1 year ago
  • Solved
I am unable to change the value of maximum RF power , it stays at a fixed value of 80W.
I have tried to make a change from SSDR and Maestro.
A new value is not accepted using PC keyboard or Maestro keyboard.
Power knob on Maestro changes RF power while is rotated. When rotation stops, RF power is still 80W. Exactly the same happens when I move Power slider in SSDR. I can move it either way, but it does not stay in a new position and returns to 80W.

Any suggestions how to fix this problem?

Tom, SP7WT
Photo of Tom

Tom

  • 97 Posts
  • 19 Reply Likes

Posted 1 year ago

  • 1
Photo of Ria - N2RJ

Ria - N2RJ, Elmer

  • 2264 Posts
  • 897 Reply Likes
Make sure this is set to 100.
Photo of Larry - W8LLL

Larry - W8LLL

  • 399 Posts
  • 78 Reply Likes
Is ddutil autodrive controlling your power?
(Edited)
Photo of Tom

Tom

  • 97 Posts
  • 19 Reply Likes
Hello Larry and Ria,
Still no progress, I can not enter a new value , type over or delete the value in Max Power square.
No, I do not use DDUtil, but I use  Expert 1 kW amplifier, controlled via USB cable connected directly to F 6700. It works well, amplifier follows the radio.

Tom, SP7WT
Photo of Tom

Tom

  • 97 Posts
  • 19 Reply Likes
We are making progress, but not complete. When the amp is in standby as Ria suggests, I can indeed change the Max power to any value. However, when I witch amp to OPERATE, power goes up to 80W and I can not to change it, as per my original note. Switching between Operate/Standby toggles power between 80W and value which I just preset (22W).
Yes, it looks as something to do with the amplifier......
Photo of Ria - N2RJ

Ria - N2RJ, Elmer

  • 2264 Posts
  • 897 Reply Likes
See Page 67. As I said, you need to use the arrow keys to set drive power.
http://expertlinears.com/pdfs/expert_1K_manual.pdf

You will see "PC=xx" where xx is the drive power. You will also see the power level being set in SmartSDR. 
Photo of EA4GLI - 8P9EH - Salvador

EA4GLI - 8P9EH - Salvador

  • 1757 Posts
  • 535 Reply Likes
What Ria said. The Arrows on the right side of the Expert amplifier (above the CAT and DISP buttons), while the OP yellow LED is ON, will allow you to change the power value for each of the 3 power settings (LOW, MID and MAX).
Photo of Rick - N4RZ

Rick - N4RZ

  • 53 Posts
  • 18 Reply Likes
Ria is correct.   The SPE amps allow you to control the output power of Your Flex radio when the amp is not in stand by mode.   I use this to insure that I safely drive the amp.   You can set the drive power to different levels for each of the three power modes on the SPE amp.   I set my drive power such that each power mode is about a 3DB increase going from Low to Mid to Max.
Photo of Tom

Tom

  • 97 Posts
  • 19 Reply Likes
I am pleased to say that the problem has been solved and everything is back to normal.I do appreciate all comments and suggestions helping me in resolving this problem.
Tom, SP7WT

This conversation is no longer open for comments or replies.