Welcome to the new FlexRadio Community! Please review the new Community Rules and other important new Community information on the Message Board.
Need the latest SmartSDR, Power Genius, and Tuner Genius Software?
SmartSDR v3.7.4 and the SmartSDR v3.7.4 Release Notes | SmartSDR v2.12.1 and the SmartSDR v2.12.1 Release Notes
SmartSDR v1.12.1 and the SmartSDR v1.12.1 Release Notes
Power Genius XL Utility v3.8.8 and the Power Genius XL Release Notes v3.8.8
Tuner Genius XL Utility v1.1.20 and the Tuner Genius XL Release Notes v1.1.20
SmartSDR v3.7.4 and the SmartSDR v3.7.4 Release Notes | SmartSDR v2.12.1 and the SmartSDR v2.12.1 Release Notes
SmartSDR v1.12.1 and the SmartSDR v1.12.1 Release Notes
Power Genius XL Utility v3.8.8 and the Power Genius XL Release Notes v3.8.8
Tuner Genius XL Utility v1.1.20 and the Tuner Genius XL Release Notes v1.1.20
If you are having a problem, please refer to the product documentation or check the Help Center for known solutions.
Need technical support from FlexRadio? It's as simple as Creating a HelpDesk ticket.
Need technical support from FlexRadio? It's as simple as Creating a HelpDesk ticket.
RF Gain (ATTN) indication not OK (dashes iso ATTN) on 40 and 30 meters
Peter PH0PPL
Member ✭✭
See screenshots.
0
Comments
-
Same here. When slider is to the right, noise level decreases. It would be helpful to know what that thing actually does.1
-
I have enter this report into our bug tracker for further investigation. Please report any additional information related to this specific issue in this community topic.
1 -
This is behaving as designed. This post explains it in detail and is repeated here, below:
https://community.flexradio.com/flexradio/topics/since-v1-3-i-am-now-see-attn-on-the-screen-just-lik...
To clear up the confusion on this, let me explain how the preamp works. In a radio with a single receiver, you can decide to use the preamp on 6m and not use it on 40m. In the FLEX-6300, you have the option of listening to two bands at the same time. If you choose 6 and 40, you really want the preamp on for 6 and the attenuator on for 40 for almost all band conditions. Since there is a single SCU in the radio, you have to decide whether you want the preamp on or off. So to accommodate listening to 6 and 40 at the same time, the preamp has slope to it that provides gain on the high end of the spectrum and attenuation on the low end. So the panadapter reads out the effect of the preamp on the band you are on.
To expand a little further, the necessity for a preamp diminishes as frequency lowers because of the atmospheric noise present on the bands. You should never want a preamp on 40m (unless you have a lossy antenna in which case the antenna would typically come with a antenna-mounted preamp).
The radio displays "PRE" when the gain at the center of the panadapter is >5dB. If the gain is <5dB, the display will show "ATTN". If the gain is between -5dB and +5dB, the panadapter shows "---" indicating that there is not much gain or loss in the current band.
Edit: also, the exact place where the indicator changes varies by radio as determined in the calibration of the preamp circuit.1 -
Thanks Steve!0
Leave a Comment
Categories
- All Categories
- 244 Community Topics
- 2.1K New Ideas
- 481 The Flea Market
- 7.1K Software
- 5.9K SmartSDR for Windows
- 132 SmartSDR for Maestro and M models
- 331 SmartSDR for Mac
- 243 SmartSDR for iOS
- 222 SmartSDR CAT
- 162 DAX
- 348 SmartSDR API
- 8.5K Radios and Accessories
- 6.9K FLEX-6000 Signature Series
- 745 Maestro
- 41 FlexControl
- 836 FLEX Series (Legacy) Radios
- 722 Genius Products
- 388 Power Genius XL Amplifier
- 250 Tuner Genius XL
- 84 Antenna Genius
- 225 Shack Infrastructure
- 150 Networking
- 366 Remote Operation (SmartLink)
- 120 Contesting
- 580 Peripherals & Station Integration
- 114 Amateur Radio Interests
- 805 Third-Party Software