Need technical support from FlexRadio? It's as simple as Creating a HelpDesk ticket.
SmartSDR v3.2.39 and the SmartSDR v3.2.39 Release Notes | SmartSDR v2.7.6 and the SmartSDR v2.7.6 Release Notes
SmartSDR v1.12.1 and the SmartSDR v1.12.1 Release Notes | Power Genius XL Firmware v3.5.23
Power Genius XL Utility v2.2.10 | Tuner Genius XL Utility v1.1.1
CW Noise upon switching from transmit to receive
My setup is a 6600M + PGXL into a vertical antenna. I run CW mostly with BW set to about 150Hz, AGC set to medium and RF gain set to 0dB. I adjust the agc to just start squelching background noise. Only one slice is operating.
Recently, in contests on 20m I have been experiencing a loud blast of noise that starts when the radio switches from transmit to receive and fades away after 1-2 seconds. The noise sounds exactly like a nearby powerful station overloading the receiver, except it occurs with no stations closer than about 3-5 KHz.
After the 1-2 second recovery period the noise is gone and the receiver performs normally even though the loud nearby stations are still transmitting.
I am not sure but the noise does not seem to appear on the waterfall under my receiving frequency so, it is not a spurious signal generated by some other station. I think it is generated inside the receiver.
It is not intermittent, it occurs on every transmit-to-receive transition but, does not occur when no other stations are on the band.
Is there some setup that I can change to eliminate this problem?
Jim Charlton AD0AB
Leave a Comment
- 16.7K All Categories
- 85 Community Topics
- 1.9K New Ideas
- 186 The Flea Market
- 5.7K Software
- 5.1K SmartSDR for Windows
- 66 SmartSDR for Maestro and M models
- 133 SmartSDR for Mac
- 162 SmartSDR for iOS
- 160 SmartSDR CAT
- 81 DAX
- 287 SmartSDR API
- 7.4K Radios and Accessories
- 6K FLEX-6000 Signature Series
- 588 Maestro
- 18 FlexControl
- 750 FLEX Series (Legacy) Radios
- 230 Genius Products
- 172 Power Genius XL Amplifier
- 56 Tuner Genius XL
- 2 Antenna Genius
- 59 Shack Infrastructure
- 32 Networking
- 129 Remote Operation (SmartLink)
- 62 Contesting
- 193 Peripherals & Station Integration
- 68 Amateur Radio Interests
- 476 Third-Party Software