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, and Tuner Genius Software?
SmartSDR v3.5.9 and the SmartSDR v3.5.9 Release Notes | SmartSDR v2.10.1 and the SmartSDR v2.10.1 Release Notes
SmartSDR v1.12.1 and the SmartSDR v1.12.1 Release Notes
Power Genius XL Utility v3.8.4 and the Power Genius XL Release Notes v3.8.4
Tuner Genius XL Utility v1.1.20 and the Tuner Genius XL Release Notes v1.1.20
SmartSDR v3.5.9 and the SmartSDR v3.5.9 Release Notes | SmartSDR v2.10.1 and the SmartSDR v2.10.1 Release Notes
SmartSDR v1.12.1 and the SmartSDR v1.12.1 Release Notes
Power Genius XL Utility v3.8.4 and the Power Genius XL Release Notes v3.8.4
Tuner Genius XL Utility v1.1.20 and the Tuner Genius XL Release Notes v1.1.20
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.
Microphone ground connection - Flex-6400M

Thomas NE7X
Member ✭✭
I have a microphone distribution switch box in my shack where I route my one single desk microphone to multiple transceivers (ICOM/Yaesu). My question is how do I build a cable for my distribution switch box to connect to a 6400M? Per the 6400M User Guild (Section 4.3.19) it states the plug on the 6400M is a balanced input and to connect the shield (Negative) side of the microphone cable to the RING on the plug and not to the ground shield sleeve of the plug. The switch distribution box has all the cable shields connected to chassis earth ground. It is OK to connect earth ground to the plug RING or do I need to have some isolation of the microphone ground shield when I connect it to the RING of the plug ?
0
Answers
-
Anyone out there that can help answer my query? How do I build/wire a non-balanced audio interface grounded shield microphone cable to a 6400M ? Is it OK to connect the earth chassis ground to the RING? Do I need an isolation interface?
0 -
Wire it like a balanced mic connection.0
-
Tim
Thanks for the reply to my query, however I'm still a bit confused. The cables coming from from my microphone distribution switch box are unbalanced, with the cable shield earth chassis ground. When you say, "Wire it like a balanced mic connection," How do I wire this to the 6400M? Does the grounded shield go to the RING or the ground pin on the 3 pin 3.5mm plug? Do I need a xformer to convert the unbalanced to balanced?
Thomas NE7X...
0 -
In a balanced wiring configuration, the shield (ground) and ring (MIC-) are not electrically connected.0
Leave a Comment
Categories
- All Categories
- 209 Community Topics
- 2K New Ideas
- 431 The Flea Market
- 6.8K Software
- 5.8K SmartSDR for Windows
- 118 SmartSDR for Maestro and M models
- 299 SmartSDR for Mac
- 222 SmartSDR for iOS
- 215 SmartSDR CAT
- 147 DAX
- 339 SmartSDR API
- 8.3K Radios and Accessories
- 6.8K FLEX-6000 Signature Series
- 696 Maestro
- 38 FlexControl
- 818 FLEX Series (Legacy) Radios
- 627 Genius Products
- 345 Power Genius XL Amplifier
- 223 Tuner Genius XL
- 59 Antenna Genius
- 198 Shack Infrastructure
- 132 Networking
- 320 Remote Operation (SmartLink)
- 112 Contesting
- 510 Peripherals & Station Integration
- 106 Amateur Radio Interests
- 756 Third-Party Software