transmit audio level issues

  • 1
  • Problem
  • Updated 3 years ago
F6500 ssdr 151

Heil hm-pro plugged into front mic jack

The hm-pro audio level never was correct as it never showed any appreciable deflection.

My understanding has been you want the instantaneous marker to just brush up against the red line but ideally not touch it.

Some releases back that point occurred at abt 77. That struck me as high give the default, to my recollection, was around 50. But I got good audio reports.

Now, however, I find I need mid to high 90's. That makes me concerned.

Thoughts?

Thanks, Walt - kz1f
Photo of Walt - KZ1F

Walt - KZ1F

  • 3040 Posts
  • 642 Reply Likes

Posted 3 years ago

  • 1
Photo of Rick  WN2C

Rick WN2C

  • 237 Posts
  • 29 Reply Likes
Walt, are you using the HM Pro profile in the transmit profile manager? I use the 781 ESSB and get great audio.

Rick
Photo of Walt - KZ1F

Walt - KZ1F

  • 3040 Posts
  • 642 Reply Likes
I actually started hm-pro life doing that and was told to get further away. I'll try it again though.
Photo of Bill Roberts

Bill Roberts

  • 205 Posts
  • 33 Reply Likes
Using PR 781 with a foam screen, my 6300 works God with 20 snow preamp and level at 70.
Photo of Walt - KZ1F

Walt - KZ1F

  • 3040 Posts
  • 642 Reply Likes
Bill, are you right up on the mic foam as Jon suggested as well?
Photo of Ken - NM9P

Ken - NM9P, Elmer

  • 3911 Posts
  • 1187 Reply Likes
"....my 6300 works God with 20 snow preamp and level at 70"
Wow!  That's some great DX!  I guess I need another new antenna!

(Sorry...Couldn't resist)

When I run my PR22 connected directly to the BAL without the Behringer mixer/preamp, I usually need to run the mike gain at between 75-90 too, and I have a loud voice.  That is about right for those mikes.  The PR-781 is similar in response and output to the PR-22 with a bit more bass.  
Photo of Walt - KZ1F

Walt - KZ1F

  • 3040 Posts
  • 642 Reply Likes
I will say this Ken, your eq settings are outstanding! You should maybe just publish them.
Photo of Tim - W4TME

Tim - W4TME, Customer Experience Manager

  • 9130 Posts
  • 3454 Reply Likes
Do you have the 20 dB mic boost (premap) turned off?
Photo of Walt - KZ1F

Walt - KZ1F

  • 3040 Posts
  • 642 Reply Likes
Yes, 20db boost is on. Isn't that the default anyway? I've never turned it off.
Photo of Walt - KZ1F

Walt - KZ1F

  • 3040 Posts
  • 642 Reply Likes
I recognize this may have zero to do with release. I added that as it did change from it was working well at 77 now it needs to be north of 90.
Photo of Walt - KZ1F

Walt - KZ1F

  • 3040 Posts
  • 642 Reply Likes
And, from Ken's last, high 70s to 90 isn't unusual. But then the default should reflect that. This did bite me once, maybe more, when I noticed I was getting no output.
Photo of Tim - W4TME

Tim - W4TME, Customer Experience Manager

  • 9130 Posts
  • 3454 Reply Likes
1.) The boost is not on by default for the line level input.  We solve a lot of low mic level issues because this was inadvertently turned off.

2.) If you are not "close talking" the mic, then you may need an input gain level up  high (70-90) to drive the radio with a dynamic mic.

3.) Check your TX EQ settings.  That is the other stage in the TX audio chain where gain can be manipulated.

4.) The "default" mic setup is a middle of the road, do as little hard as possible, one size fits very few starting point where you can create your own specific TX profile.
Photo of Walt - KZ1F

Walt - KZ1F

  • 3040 Posts
  • 642 Reply Likes
I initilally grabbed Ken's PR-whatever profile and used it. I got outstanding audio reports with it. Since I lost it when I had to emergency restart the radio I've ended up with the hm-pro profile. OK on the booast, I've never seen it off.

with all that feedback, Tim, you can close this one.
(Edited)