My 6700 has slight ringing sound when in SSB mode

  • 1
  • Problem
  • Updated 5 years ago
  • Solved
My 6700 has a slight ringing sound when in SSB mode.  I do not notice any expansion of  bandpass width no matter which filter is selected, the signal sounds the same width for any filter setting, and the slight ringing sound persists. no matter what I try. This is true for any band, and for LSB and USB. I have checked the equalizer for RX and the problem is not there. Bandpass offset is set correctly, for example with 2.7K selected, the signal is centered with 2800 high and 100 low.

Can someone help me with this?

Photo of W5UN_Dave

W5UN_Dave

  • 316 Posts
  • 30 Reply Likes

Posted 5 years ago

  • 1
Photo of Robbie - KI4TTZ

Robbie - KI4TTZ

  • 484 Posts
  • 78 Reply Likes

Hmm, haven't heard ringing on mine.  Are you listening to audio through DAX or via audio directly off of the 6700 output jack?  I'm definitely not one of the experts here, but I'm curious if you hear the ringing sound on both the DAX audio and the speaker output on the radio?
Photo of W5UN_Dave

W5UN_Dave

  • 316 Posts
  • 30 Reply Likes
I'm hearing it direct thru the headphones plugged into the front of the radio
Photo of W5UN_Dave

W5UN_Dave

  • 316 Posts
  • 30 Reply Likes
Can no one give me any help with this? Am I the only one having this problem? How strange.  If nothing else, I will reload the entire SmartSDR (and lose all my settings)
Photo of K1UO - Larry

K1UO - Larry

  • 866 Posts
  • 135 Reply Likes
Flex needs an external utility program for storing Macros, .ini files (persistance) or whatever to save normal setup features and settings that can be reloaded after a complete firmware update..  Hopefully this or something like it is in the future.  especially when cwx comes along too.
BTW: No ringing on the audio here with my 6700 but is sounds constricted no matter what filter width I try. 
(Edited)
Photo of W5UN_Dave

W5UN_Dave

  • 316 Posts
  • 30 Reply Likes
Yes Larry, constricted is the right term for my experience
Photo of Ernest - W4EG

Ernest - W4EG

  • 620 Posts
  • 122 Reply Likes


Dave,

Sorry that I can't help you. 

However, many months ago I had a similar situation that I though it was a problem.

I was hearing two different source of audio, one was a voice and the other were tones.  I went to the computer audio mixer and start looking for the problem.  I checked the settings and turned then off one at a time.  Hoping to find the culprit. 

Sure enough after a while I found where they were being generated and it turned up being audio from the computer and audio from the receiver where being mix by the same source. I separated them and set then to different inputs and that cure my problem. 

I don't know if that it is was going on with yours; I just wanted to give you my experienced.

(Edited)
Photo of Tim - W4TME

Tim - W4TME, Customer Experience Manager

  • 9186 Posts
  • 3549 Reply Likes
Dave - I operated for hours last weekend in the contest on 15 and 10m with a 2.4 and 2.7k filter and I did not hear the "ringing" you described.  I presume you are using SmartSDR v1.1.3.

I did however have to adjust the AGC-T to a higher setting than from the defaults to get the best SNR for the band conditions, as the noise floor at my QTH is fairly low, around -12 dBm.
Photo of Tim - W4TME

Tim - W4TME, Customer Experience Manager

  • 9186 Posts
  • 3549 Reply Likes
Official Response
Dave - I just had a thought.  We made a change in SmartSDR v1.1.3 that modified the behavior of the APF (audio peaking filter).  It is possible that the filter may still be engaged during phone modes but you would never see any indication of it.  It would affect the audio quality and produce hollow sounding audio that could be described as "ringing".

Clearing the internal persistence database should correct this situation if this is truly the case.  To do that, power off the radio using the front panel power button.  Press and hold the front panel OK button while momentarily pressing the power button to start the radio,  Once you see the "Factory Defaults" displayed on the radio console, release the OK button.  This will reset the APF settings where they only work in CW mode.
Photo of W5UN_Dave

W5UN_Dave

  • 316 Posts
  • 30 Reply Likes
Tim, thanks, this solved the slight ringing problem.
Photo of Tim - W4TME

Tim - W4TME, Customer Experience Manager

  • 9186 Posts
  • 3549 Reply Likes
That is good to know, Dave!

This conversation is no longer open for comments or replies.