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, Tuner Genius and Antenna Genius Software?
SmartSDR v3.7.4 and the SmartSDR v3.7.4 Release Notes | SmartSDR v2.12.1 and the SmartSDR v2.12.1 Release Notes
SmartSDR v1.12.1 and the SmartSDR v1.12.1 Release Notes
Power Genius XL Utility v3.8.8 and the Power Genius XL Release Notes v3.8.8
Tuner Genius XL Utility v1.2.11 and the Tuner Genius XL Release Notes v1.2.11
Antenna Genius Utility v4.1.8
SmartSDR v3.7.4 and the SmartSDR v3.7.4 Release Notes | SmartSDR v2.12.1 and the SmartSDR v2.12.1 Release Notes
SmartSDR v1.12.1 and the SmartSDR v1.12.1 Release Notes
Power Genius XL Utility v3.8.8 and the Power Genius XL Release Notes v3.8.8
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.
FLEX-1500 SDR Datasheet: Are there any filters to eliminate images below 490 KHz?
Options
Don Hamrick
Member
RE: FLEX-1500 SDR Datasheet: page 2, General Specifications, Rx Frequency Range: "490 kHz - 54 MHz (operating below 490 kHz requires external, customer provided filters to eliminate images) 160 - 6 m (specified performance in Amateur bands only)" Are there any such filters available at retail? Or is it strictly limited to the home brew market? If so, who has them?
0
Answers
-
Don,
I have home brewed simple low pass filters and band pass filters for the 1500 for 660M and 2200M.
http://www.wa4dsy.net/filter/filterdesign.html
http://www.george-smart.co.uk/w/images/thumb/3/3c/472KHz_LPF_Schematic.png/500px-472KHz_LPF_Schemati...
http://www.spirat.com.au/vk5zvs/pic55.htm
Even 2 stages works well and is easily adjusted with miniature 455kHz transformers.
http://www.qsl.net/aa3sj/Pages/Preselector.html
Commercial options
http://www.kiwa.com/LPF.html
,http://www.herostechnology.co.uk/pages/RF_Filters/filters.html#MiniLPF.
Andrew de VK5CV.0
Leave a Comment
Categories
- All Categories
- 245 Community Topics
- 2.1K New Ideas
- 488 The Flea Market
- 7.3K Software
- 5.9K SmartSDR for Windows
- 134 SmartSDR for Maestro and M models
- 327 SmartSDR for Mac
- 241 SmartSDR for iOS
- 224 SmartSDR CAT
- 161 DAX
- 343 SmartSDR API
- 8.5K Radios and Accessories
- 6.9K FLEX-6000 Signature Series
- 768 Maestro
- 42 FlexControl
- 836 FLEX Series (Legacy) Radios
- 726 Genius Products
- 391 Power Genius XL Amplifier
- 251 Tuner Genius XL
- 84 Antenna Genius
- 221 Shack Infrastructure
- 149 Networking
- 369 Remote Operation (SmartLink)
- 118 Contesting
- 582 Peripherals & Station Integration
- 116 Amateur Radio Interests
- 810 Third-Party Software