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.
Gradual Loss of RX Signal
![Andy F5VAI](https://community.flexradio.com/applications/dashboard/design/images/banned.png)
Andy F5VAI
Member ✭✭
Flex 6300 SN: 1015-4175-6300-2622 SmartSDR V2.0.19
My rx signal slowly disappears and the only way I have found to get it back to normal is to trip the tx. It is almost as if it is a sticking relay. It is also intermittent and variable in loss. It can happen quite often, or go for some time without causing a problem. It does it on all antennas. The panadaptor also varies and will disappear below the -140 line when it is very bad.
I have done a factory reset, uninstalled SmartSDR etc and reinstalled.
Any ideas?
73 Andy F5VAI (G3HCU)
My rx signal slowly disappears and the only way I have found to get it back to normal is to trip the tx. It is almost as if it is a sticking relay. It is also intermittent and variable in loss. It can happen quite often, or go for some time without causing a problem. It does it on all antennas. The panadaptor also varies and will disappear below the -140 line when it is very bad.
I have done a factory reset, uninstalled SmartSDR etc and reinstalled.
Any ideas?
73 Andy F5VAI (G3HCU)
2
Comments
-
Is this on all bands, or just low bands? eg, 160/80?0
-
On all bands, I am on 20m at the present time and it is bad0
-
I think I have found a problem with the ATU. With the ATU in circuit the SWR is very high and yet my real SWR is about 1:5. I guess the best idea is to remove the ATU and see whether that cures the problem.0
-
I have the same issue. The only difference being that it only happens when I have the attenuate/preamp switched on. It drops down to -145 to -150 and when I hit TX, it comes back up to -130 to-135. Within a few minutes, it drops again.0
-
No issues with SWR on mine and it still does. It still could be a relay on the ATU though.0
-
I noticed it doesn't appear to happen on 6 meters. It does happen on 10 to 160 to varying degrees, and on both antenna inputs, with or without the ATU enabled. Never happens with attenuation / preamp turned off.0
-
I tried this on three different antennas, all connected directly to the radio, and got the same results. This rules out any connections or issues with the amp, tuner, meter, and coax jumpers.0
-
Call and open trouble ticket. I believe that the TR switch is solid state and could be failing. Pat0
-
I had the same issue with my 6300...was told that I was nuts. It is gone now.
0 -
Did you switch to a different model?0
-
I have found the problem and it is not the Flex! My rig etc is remoted in my garage, so today I stripped everything down and isolated items one by one. It turns out the fault was most bizarre! It was a right-angle PL259 adaptor! In all my 52 years of AR I have never come across this problem. I have now removed all right-hand PL259 adaptors as you can imagine.
Why it should show up as a gradual loss is in the RX path, and only when using the ATU seems to be very strange. Anyway I am pleased to know it is not the Flex and it is a salutary lesson!1 -
Interesting. I did have that exact same problem with a 90 recently on another rig setup, but none on the Flex.0
-
Andy, good work. I knew this was not a problem with your radio, but I had no answers.0
-
Andy, has your TR problem come back? I ask because I am having the same problem with my 6500. Received signals will disappear after a transmission (usually in DIGU mode) and will only be restored by switching to transmit a short burst of CW in a different slice.
0 -
I bought a lot of new, Communist China, Rt angle PL259's and 1/2 of them were bad or intermit. A friend of mine had an old mil spec one from 20 years ago and it had turned bad. Very strange considering no moving parts on the center core.0
-
I had this same problem with a new Flex 6400, and when I read Andy's post above, I checked out both of my right angle connectors in the coax path. Sure enough, one of them had a cracked dielectric and a singe mark, possibly from a lightning strike I had in 2017 which damaged a previous radio. I removed both of the right angle connectors from the coax path and that solved the problem. The 6400 is working perfectly now. I also had a problem of intermittent transmit. It would stop transmitting for a brief second on FT8 and immediately resume again. This problem has also seemed to have been solved. I've also been a ham like Andy for 52 years and have never seen these issues before. Thanks, Andy! Good detective work!0
Leave a Comment
Categories
- All Categories
- 274 Community Topics
- 2.1K New Ideas
- 513 The Flea Market
- 7.4K Software
- 6K SmartSDR for Windows
- 143 SmartSDR for Maestro and M models
- 343 SmartSDR for Mac
- 246 SmartSDR for iOS
- 228 SmartSDR CAT
- 166 DAX
- 350 SmartSDR API
- 8.7K Radios and Accessories
- 7K FLEX-6000 Signature Series
- 828 Maestro
- 43 FlexControl
- 842 FLEX Series (Legacy) Radios
- 783 Genius Products
- 412 Power Genius XL Amplifier
- 273 Tuner Genius XL
- 98 Antenna Genius
- 236 Shack Infrastructure
- 161 Networking
- 394 Remote Operation (SmartLink)
- 121 Contesting
- 612 Peripherals & Station Integration
- 122 Amateur Radio Interests
- 845 Third-Party Software