Need technical support from FlexRadio? It's as simple as Creating a HelpDesk ticket.
SmartSDR v3.1.12 and the SmartSDR v3.1.12 Release Notes. | SmartSDR v2.6.2 and the SmartSDR v2.6.2 Release Notes.
SmartSDR v1.12.1 and the SmartSDR v1.12.1 Release Notes. | Power Genius XL Firmware v3.4.16. | Power Genius XL Utility v2.2.10.
Automatic receive bandwidth switch during transmit in digital modes
I watched a video that
Steve Hicks made about noise. You can find the video here: https://youtu.be/xXXj1Ko4ZXg?t=352
In this video he mentions several noise sources: Thermo, Gaussian, flicker, quantification, phase, additive, splatter, atmospheric, power line, spark, power supply and a few more I have forgotten. In this talk he is only concerned with Thermo, Gaussian and Atmospheric noise. He talks about signal to digital conversion, FFT, dBm, bin size, noise floor and several other noise related topics. This is a great technical talk on how our radios receive signals. Being a practical person, my whole take away is that if I reduce my receive bandwidth during my digital mode qso (or any mode for that matter) signal strength would improve in relation to noise.
Most of the time I use a spot and pounce technique on FT8. In order to see FT8 signals to decode, I originally set the receive bandwidth to 2500-3000 Hz wide where stations are sending these signals. When I spot a station I want to work, I double click on their line and my transmitter moves to that frequency and starts send my call and grid. During this transmission, I use the RX box to change the receive bandwidth to about 100 Hz covering my transmitted signal. When the station replies to my transmission, a -10 signal level initially is now +15 or higher most of the time.
So my new idea is this: When in digital modes, could we add the ability to preset the receive bandwidth at the transmitted frequency. It will need a toggle because you would not want this to happen while working stations on digital split within the original 2500-3000 Hz bandwidth.
Leave a Comment
- 63 Community Topics
- 1.9K New Ideas
- 102 The Flea Market
- 5.3K Software
- 4.8K SmartSDR for Windows
- 32 SmartSDR for Maestro and M models
- 74 SmartSDR for Mac
- 135 SmartSDR for iOS
- 148 SmartSDR CAT
- 60 DAX
- 275 SmartSDR API
- 7K Radios and Accessories
- 5.7K FLEX-6000 Signature Series
- 546 Maestro
- 9 FlexControl
- 710 FLEX Series (Legacy) Radios
- 135 Power Genius Products
- 106 Power Genius XL Amplifier
- 10 Power Genius Utility
- 19 Tuner Genius
- 36 Shack Infrastructure
- 18 Networking
- 81 Remote Operation (SmartLink)
- 46 Contesting
- 111 Peripherals & Station Integration
- 56 Amateur Radio Interests
- 381 Third-Party Software