Ant RF Gain slider on 6300 with V 2.0.19.98

  • 1
  • Question
  • Updated 11 months ago
Ant RF Gain slider on 6300 with V 2.0.19.98
Due to QRM from plc getting bigger every where, is there a chance to get the gain slider adjustable with my config?
Nowadays it is 0 or 20 Db.
It would be great to be able to adjust the gain at the limit of the QRM.
Tks
jean claude  F6EJU
Photo of F6EJU

F6EJU

  • 14 Posts
  • 1 Reply Like

Posted 11 months ago

  • 1
Photo of Tim - W4TME

Tim - W4TME, Customer Experience Manager

  • 9148 Posts
  • 3467 Reply Likes
If you are experiencing QRM, you do not want more RF gain, especially on the bands above 14 MHz unless you are using a negative gain antenna.

This article will inform you when RF gain is needed
https://helpdesk.flexradio.com/hc/en-us/articles/204923669-How-to-determine-the-amount-of-RF-Preamp-...

You want to the AGC-T setting to optimize your signal to noise ratio for receive.
This is covered in the SmartSDR Software Users Guide in the AGC-T section, chapter 13 How to Configure Noise Mitigation   

http://www.flexradio.com/downloads/smartsdr-software-user-guide-pdf/
Photo of F6EJU

F6EJU

  • 14 Posts
  • 1 Reply Like
TIM
Tks for your reply.
I am going to study what you have explained.
Tell me one thing:
On the 6300 is there or not the possibility to adjust the ANT RF GAIN by a slider and not what I have today which is 0 or 20 DB.
To tell you the true, I have bought the V 2.0.19.98 thinking it will turns the switch in a real slider.... 
regards
jean claude
Photo of Tim - W4TME

Tim - W4TME, Customer Experience Manager

  • 9148 Posts
  • 3466 Reply Likes
The RF gain control is not continuously variable.  It has fixed gain settings in steps.
(Edited)
Photo of F6EJU

F6EJU

  • 14 Posts
  • 1 Reply Like
Do all models 6000 have this function working in the same way ?"fixed gain"
I am gonna get a new 6400 when available on this side of the pond ...2018 
Will it be as all the 6000 with a fixed gain?
Photo of Tim - W4TME

Tim - W4TME, Customer Experience Manager

  • 9148 Posts
  • 3466 Reply Likes
Yes, all FLEX-6000 operate this way, they have a stepped gain RF preamp.
Photo of F6EJU

F6EJU

  • 14 Posts
  • 1 Reply Like
Tim

Now It is clear  in my mind.
Thanks for your help and patience...
73
jean claude F6eju
Photo of Tim - W4TME

Tim - W4TME, Customer Experience Manager

  • 9148 Posts
  • 3466 Reply Likes
You're welcome
Photo of Gayle Lawson

Gayle Lawson

  • 28 Posts
  • 14 Reply Likes
Jean:

What your adjusting (RF Gain) is known as PRE AMP on/off in other radios.   Look at the slice flag, click on the speaker Icon, you will see the box for selection of AGC Speed.  To the right of that is a slider, this is the variable parameter you are looking for, FLEX calls it AGC Threshold, it would be labeled RF gain on analog radios.

Gayle K0FLY
Photo of F6EJU

F6EJU

  • 14 Posts
  • 1 Reply Like
Thanks Gayle.
73 f6eju