These three functions are set for the ADC LTC2208, you can check the LTC2208 specification for related descriptions
https://www.analog.com/media/en/technic ... 2208fc.pdf
Search found 18 matches
- Wed Feb 22, 2023 7:01 am
- Forum: RX-666 / RX-888 (Dragonfly)
- Topic: what are the "Dither", "Random", and "PGA" options in the radio settings panel?
- Replies: 8
- Views: 1698
- Tue Feb 16, 2021 6:23 pm
- Forum: RX-666 / RX-888 (Dragonfly)
- Topic: Rx888 Mk II and v3.0.27
- Replies: 14
- Views: 5428
Re: Rx888 Mk II and v3.0.27
At present, from the feedback of HDSDR, we can see that HDSDR can't calculate so much data, and FFT can't handle it. It can't run 64M bandwidth on my PC i5 4590, but it can run 64M normally on i7 3770 of ik1xpv. I think if It should be possible to have a computer with sufficient performance. Of cour...
- Mon Nov 23, 2020 12:32 pm
- Forum: RX-666 / RX-888 (Dragonfly)
- Topic: Calibration
- Replies: 13
- Views: 2332
Re: Calibration
The main reason is that the ADC LTC2208 generates too much heat, which causes the internal temperature to vary greatly. I will consider providing an external clock input option on the RX999 to facilitate access to reference clocks such as GPSDO
- Mon Nov 23, 2020 12:28 pm
- Forum: RX-666 / RX-888 (Dragonfly)
- Topic: longer usb lead for RX-888
- Replies: 5
- Views: 1328
Re: longer usb lead for RX-888
Pray for an RX-999 with provision for an external power supply. Meanwhile use leads that are built for high current draw. They are fat, unwieldy, but have a chance of working. {^_^} It may not be the problem of power supply. It is more likely to be the problem of USB3.0 signal transmission. USB3.0 ...
- Fri Nov 20, 2020 4:24 pm
- Forum: RX-666 / RX-888 (Dragonfly)
- Topic: VHF Down-convertor for RX-888 ?
- Replies: 11
- Views: 2320
Re: VHF Down-convertor for RX-888 ?
There is a simple way to use ADL5801 module + nanovna to generate LO + filter,Actually I am designing one, but I have been busy recently and have not continued
- Fri Nov 13, 2020 3:28 pm
- Forum: RX-666 / RX-888 (Dragonfly)
- Topic: new kid on the block
- Replies: 1
- Views: 922
Re: new kid on the block
Replace RX666 with a cheap shell, cost-down version
- Sun Nov 08, 2020 2:23 am
- Forum: RX-666 / RX-888 (Dragonfly)
- Topic: Calibration
- Replies: 13
- Views: 2332
Re: Calibration
You can calibrate through hardware. After disassembling the metal casing, there is a potentiometer above the shielding cover of the VCXO unit, which can be fine-tuned according to the standard frequency.
- Wed Nov 04, 2020 10:46 am
- Forum: RX-666 / RX-888 (Dragonfly)
- Topic: RX-888 USB3 problems
- Replies: 20
- Views: 4858
Re: RX-888 USB3 problems
Have you tried other systems or computers? If the equipment is abnormal, the dealer can be recommended to replace it
- Fri Oct 30, 2020 2:22 pm
- Forum: RX-666 / RX-888 (Dragonfly)
- Topic: VHF/UHF performance (and LF/VLF too!)
- Replies: 13
- Views: 5587
Re: VHF/UHF performance (and LF/VLF too!)
In my test, I found that the heat of R820T2 will cause the reception performance to decline. On the other hand, we did not turn on the internal Mixer gain adjustment of R820T2, only the gain control of LNA and VGA was turned on. We will add it to the new version of RX888 extio This option
- Fri Oct 30, 2020 2:20 pm
- Forum: RX-666 / RX-888 (Dragonfly)
- Topic: RX-888 Gain Question
- Replies: 4
- Views: 1237