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, Power Genius, Tuner Genius and Antenna Genius Software?
SmartSDR v3.9.18 and the SmartSDR v3.9.18 Release Notes
SmartSDR v2.12.1 and the SmartSDR v2.12.1 Release Notes
Power Genius XL Utility v3.8.9 and the Power Genius XL Release Notes v3.8.9
Tuner Genius XL Utility v1.2.11 and the Tuner Genius XL Release Notes v1.2.11
Antenna Genius Utility v4.1.8
SmartSDR v3.9.18 and the SmartSDR v3.9.18 Release Notes
SmartSDR v2.12.1 and the SmartSDR v2.12.1 Release Notes
Power Genius XL Utility v3.8.9 and the Power Genius XL Release Notes v3.8.9
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.
A USB Audio "Null Modem" for Remote Mac Digital Ops

George KF2T
Member ✭✭✭
Maybe I have too much time on my hands...
Not satisfied with MacBook Air phone and CWX operation from poolside, I built a little "null modem" for digital modes out of a "hamfest special" USB audio dongle. Removed the i/o jacks and installed a voltage divider (10k & 100 ohm) to bring the speaker level to microphone level.
Works great!
I can run a digital mode application on my Mac laptop with DogParkSDR and merrily make contacts. Use VOX for transmit. Watch the levels to avoid over modulation and tripping the VOX during receive.
Windows machines, of course, have it easy with DAX and CAT!

Not satisfied with MacBook Air phone and CWX operation from poolside, I built a little "null modem" for digital modes out of a "hamfest special" USB audio dongle. Removed the i/o jacks and installed a voltage divider (10k & 100 ohm) to bring the speaker level to microphone level.
Works great!
I can run a digital mode application on my Mac laptop with DogParkSDR and merrily make contacts. Use VOX for transmit. Watch the levels to avoid over modulation and tripping the VOX during receive.
Windows machines, of course, have it easy with DAX and CAT!

1
Comments
-
Are the band virtually completely static where you are too?0
-
Been a pretty dry spell on the bands, for sure.0
-
Geomagnetic storms recently. http://www.spaceweather.com/0
Leave a Comment
Categories
- All Categories
- 325 Community Topics
- 2.1K New Ideas
- 590 The Flea Market
- 7.8K Software
- 6.2K SmartSDR for Windows
- 165 SmartSDR for Maestro and M models
- 394 SmartSDR for Mac
- 260 SmartSDR for iOS
- 246 SmartSDR CAT
- 178 DAX
- 368 SmartSDR API
- 9K Radios and Accessories
- 14 Aurora
- 150 FLEX-8000 Signature Series
- 7.1K FLEX-6000 Signature Series
- 906 Maestro
- 50 FlexControl
- 854 FLEX Series (Legacy) Radios
- 865 Genius Products
- 444 Power Genius XL Amplifier
- 307 Tuner Genius XL
- 114 Antenna Genius
- 273 Shack Infrastructure
- 193 Networking
- 437 Remote Operation (SmartLink)
- 135 Contesting
- 715 Peripherals & Station Integration
- 135 Amateur Radio Interests
- 937 Third-Party Software