Welcome to the FlexRadio Community! Please review the new Community Rules and other important new Community information on the Message Board.
Need the latest SmartSDR or 4O3A Genius Product Software?
SmartSDR v3.9.19 and the SmartSDR v3.9.19 Release Notes
SmartSDR v2.12.1 and the SmartSDR v2.12.1 Release Notes
The latest 4O3A Genius Product Software and Firmware
SmartSDR v3.9.19 and the SmartSDR v3.9.19 Release Notes
SmartSDR v2.12.1 and the SmartSDR v2.12.1 Release Notes
The latest 4O3A Genius Product Software and Firmware
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.
Flex 6500 abruptly shuts down after Tx

Richard Everett
Member ✭✭
In the middle of a transmission or right after a transmission my Flex 6500 totally stops. The red MOX button remains red but the radio is not on. I have to restart the radio connection which is successful but the dropout has occurred four times today. I am running my Flex 6500 with a Palstar HF Auto antenna tuner and an ACOM 1000 amplifier. I thought that I might be using too much power so I backed down the power level to 50%, yielding around 800 watts of output power. The problem still occurred and I am at a loss for what is causing this issue. I know that I should open a service issue ticket with Flex but wanted to see if this is commonly occurring and if a resolution has been found. I searched the forum but did not find an answer. Please advise. - Richard Everett K5RBI
0
Comments
-
Richard
Sounds like RFI to me, I would test whether it happens without the amp. Does it do it on every band? I always try connecting just a dummy load to the radio, turn the tune power to 10 watts and then press tune. If it doesn't cut off, move the tune power to 50 watts then press tune. slowly increase the power until you are at 100 watts. Do this for each band. If it doesnt turn off, its not the radio.
0 -
Richard:
Does the shut down happen when connected to a dummy load? Running the radio at 100 watts? etc. That will tell you . if you have a RFI problem or not.
Gayle K0FLY0 -
Sounds like RFI..... try it barefoot ...0
-
Thanks for the advice and suggestions everyone. It looks like it is indeed an RFI issue. I backed down on the power significantly and no crashes whatsoever. I will creep up the power from here when DXing and find that "point of no return". Thanks again for your help!0
-
I keep a bucket full of MIX 31 Snap on chokes of different I.D. sizes on hand, I am not using that many but I have not had an RFI issues yet that could not be solved using them. For me the usual suspects are USB cables, network cables, speaker cables. I would guess that RFI is getting into your network cable by your symptoms, that is a good place to start.
mouser.com
MIX 31 Snap-on
1/4 id ferrites 623-0431167281
1/2 id ferrites 623-0431164181
3/4 id ferrites 623-0431173551
0 -
Hi Richard,
I also had RF issues on my 6700. I documented the fix on my web page.
http://www.nn4zz.com/FLEX6700.htm#RF_issues_and_solutions
You might also be interested in this link for RF on your network cables.
http://www.nn4zz.com/FLEX6700.htm#Ethernet_Lightning_Protection
Al / NN4ZZ
al (at) nn4zz (dot) com
6700 & SSDR-W V 2.4.9
Win10
0
Leave a Comment
Categories
- All Categories
- 338 Community Topics
- 2.1K New Ideas
- 607 The Flea Market
- 7.9K Software
- 6.3K SmartSDR for Windows
- 170 SmartSDR for Maestro and M models
- 401 SmartSDR for Mac
- 264 SmartSDR for iOS
- 247 SmartSDR CAT
- 185 DAX
- 371 SmartSDR API
- 9.1K Radios and Accessories
- 19 Aurora
- 190 FLEX-8000 Signature Series
- 7.1K FLEX-6000 Signature Series
- 913 Maestro
- 53 FlexControl
- 859 FLEX Series (Legacy) Radios
- 886 Genius Products
- 450 Power Genius XL Amplifier
- 320 Tuner Genius XL
- 116 Antenna Genius
- 281 Shack Infrastructure
- 197 Networking
- 442 Remote Operation (SmartLink)
- 137 Contesting
- 741 Peripherals & Station Integration
- 137 Amateur Radio Interests
- 954 Third-Party Software