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.
ARRL FMT -- getting the most accurate frequency
Comments
-
GetError has nothing to do with GPSDO. It’s the error caused by the truncated tuning word. Not every frequency can be directly represented by the tuning word.0
-
Everything you said it true, however the get_error command is only useful if the radio is GPS locked or locked to a 10MHz reference. The result does not take into account any drift in the internal OCXO or TCXO.
http://wiki.flexradio.com/index.php?title=TCP/IP_slice#GET_ERROR
0 -
Bill, is there an area of the document that is misleading regarding get_error and GPSDO? If so, identify where and I will update the master to avoid any confusion.
Ron0 -
Chuck, I'll have to defer to the folk at Flex as all I did was pull together the "How To" and don't have enough insight into the internal workings of the Flex.
As to your results, the last 2 frequencies look to be the WWV frequencies less 1500Hz. Were you measuring WWV and providing the slice frequency?
As to the other 2, I don't recognize those. DId you used a signal generator referenced to a GPSDO to generate the 2 test frequencies then measured the error on the 6600 using the method outlined by Steve and documented in my PDF? If so, one possible factor could be that GPSDOs are extremely accurate when averaged over the long term but not as accurate for short term measurements.
Ron0 -
Ron, yes I was measuring WWV. The other two frequencies are two regional AM broadcasters in my area (620 & 1130 KHz). I was curious what I would get measuring their frequency. I used 100 measurements sampled over about 5 minutes and took a mean average for each signal.
Thanks for putting the document together. Nicely done!
Chuck0 -
Practicing for tomorrow night received a Slice Get_error -45.774696 on my 6700 running 3.1.8
Ron, no problems with your document.0 -
It's tonight at 8 PM CST, 7 PM EST.1
-
Always forget UTC starts the days B4 here thanks Dave0
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
- 171 SmartSDR for Maestro and M models
- 401 SmartSDR for Mac
- 264 SmartSDR for iOS
- 248 SmartSDR CAT
- 185 DAX
- 371 SmartSDR API
- 9.1K Radios and Accessories
- 19 Aurora
- 191 FLEX-8000 Signature Series
- 7.1K FLEX-6000 Signature Series
- 913 Maestro
- 53 FlexControl
- 859 FLEX Series (Legacy) Radios
- 887 Genius Products
- 450 Power Genius XL Amplifier
- 321 Tuner Genius XL
- 116 Antenna Genius
- 283 Shack Infrastructure
- 199 Networking
- 442 Remote Operation (SmartLink)
- 137 Contesting
- 742 Peripherals & Station Integration
- 137 Amateur Radio Interests
- 956 Third-Party Software