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, Tuner Genius and Antenna 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 v1.2.11 and the Tuner Genius XL Release Notes v1.2.11
Antenna Genius Utility v4.1.8
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 v1.2.11 and the Tuner Genius XL Release Notes v1.2.11
Antenna Genius Utility v4.1.8
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.
PRE AMP CRAZY FLEX3000
Options
FranciscoT
Member
I'm using flex3000 in amerintron als500 CW and my PRE2 dont receive good.... attn-98 off-107 pre1-119 pre2 -127 im confuse
1
Comments
-
Francisco
It's working as it should.
Your measuring noise floor readings. Your highest noise floor reading was with the attenuator enabled 98dBm, your lowest reading was with preamp 2, -127dBm.
Your noise level dropped 29dBm.
Any actual signal would/should have remained constant.
When Off is selected, a -102dBm signal would be 5dBm out of the noise.
With the attenuator enabled the same signal would be buried 4dBm in the noise, you might have trouble hearing that signal at all.
With preamp 1 enabled it would be 17dBm above the noise floor, and easier to copy.
With preamp 2 enabled the signal would be 25dBm above the noise and even louder.
Increased preamp gain will raise signals out of the noise, and lower the noise floor.
Signals will appear to be taller, standing on the noise floor in the panadapter with more preamp gain.
73, Jay - NO5J0
Leave a Comment
Categories
- All Categories
- 245 Community Topics
- 2.1K New Ideas
- 488 The Flea Market
- 7.3K Software
- 5.9K SmartSDR for Windows
- 134 SmartSDR for Maestro and M models
- 327 SmartSDR for Mac
- 241 SmartSDR for iOS
- 224 SmartSDR CAT
- 161 DAX
- 343 SmartSDR API
- 8.5K Radios and Accessories
- 6.9K FLEX-6000 Signature Series
- 768 Maestro
- 42 FlexControl
- 836 FLEX Series (Legacy) Radios
- 726 Genius Products
- 391 Power Genius XL Amplifier
- 251 Tuner Genius XL
- 84 Antenna Genius
- 221 Shack Infrastructure
- 149 Networking
- 369 Remote Operation (SmartLink)
- 118 Contesting
- 582 Peripherals & Station Integration
- 116 Amateur Radio Interests
- 809 Third-Party Software