SmartSDR v3.3.29 and the SmartSDR v3.3.29 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 Utility v3.6.24 and the Power Genius XL Release Notes v3.6.24
Tuner Genius XL Utility v1.1.8 and the Tuner Genius XL Release Notes v1.1.8
Need technical support from FlexRadio? It's as simple as Creating a HelpDesk ticket.
Wiring a Yamaha CM500 headset for a 6400(M) or 6600(M)
I recently upgraded from a Flex 6500 to a 6600. I use a Yamaha CM500 headset as I find it more comfortable to wear for long periods than my Heil Proset.
The 6500 uses an 8 pin Foster-type connector on its front panel for microphone and PTT connections. I had wired up an adapter for the CM500, which uses a 1/8” TRS (tip-ring-sleeve) plug for passing the mic signals and the +3vdc the CM500 needs for biasing its electret mic element.
The new 6400(M)/6600(M) models use a 1/8” TRS jack on the rear for pseudo-balanced mic connections. The tip is Mic(+) and passes +3vdc when “bias” is activated in the SmartSDR settings (Phone/CW tab). The ring is Mic (-) and the sleeve is Ground.
I wired a new adapter consisting of a 1/8” TRS jack (to receive the mic plug from the CM500), three wires, some heat shrink tubing to cover the wires, a 10μF capacitor and a 1/8” TRS plug that goes into the 1/8” TRS mic jack on the 6400(M)/6600(M). Here’s how it is wired:
The value of the capacitor is not critical. I used a small 10μF capacitor so I could fit it into the shell of the 1/8” TRS plug at one end of the adapter. The capacitor allows the Mic(+) signal to pass through from the CM500m while blocking the +3vdc bias that needs to be applied to the ring of the CM500 mic plug.
I know there are a number of Flexers who use the CM500 headset and who plan to upgrade to a 6400(M) or 6600(M). If you’re using one of these headsets I hope this brief “how-to” will help make the transition as quick and as painless as possible.
Dale – K4DG
Leave a Comment
- 18.3K All Categories
- 125 Community Topics
- 2K New Ideas
- 275 The Flea Market
- 6.1K Software
- 5.3K SmartSDR for Windows
- 90 SmartSDR for Maestro and M models
- 203 SmartSDR for Mac
- 185 SmartSDR for iOS
- 179 SmartSDR CAT
- 109 DAX
- 317 SmartSDR API
- 7.8K Radios and Accessories
- 6.3K FLEX-6000 Signature Series
- 627 Maestro
- 29 FlexControl
- 769 FLEX Series (Legacy) Radios
- 396 Genius Products
- 237 Power Genius XL Amplifier
- 141 Tuner Genius XL
- 18 Antenna Genius
- 114 Shack Infrastructure
- 71 Networking
- 200 Remote Operation (SmartLink)
- 87 Contesting
- 290 Peripherals & Station Integration
- 86 Amateur Radio Interests
- 569 Third-Party Software