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Author Topic: Birdies RX-888  (Read 339 times)

Offline Triker

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Birdies RX-888
« on: June 13, 2021, 1653 UTC »
I got my RX-888 yesterday.
Installation was quickly done.

But i was surprised how many birdies this little box has when connecting a 50 ohm load to the input.
https://imgur.com/a/JyAev5v
The RBW is around 122 Hz and when going up to 2 khz they disappear. But in my opinion this should not be.

Has anyone else discovered the same problem?

73 de Roland

« Last Edit: June 13, 2021, 1704 UTC by Triker »

Offline RobRich

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Re: Birdies RX-888
« Reply #1 on: June 13, 2021, 1706 UTC »
I took a quick skim of the NextGenSDRs@groups.io group where the RX-888 is discussed frequently.

There is an updated RX888_extio_v0.5-release available.

https://groups.io/g/NextGenSDRs/topic/77958038

The download is a few posts down.

https://groups.io/g/NextGenSDRs/message/153

One user mentioned birdies disappearing when setting an 128MS/s sampling rate.

https://groups.io/g/NextGenSDRs/message/182
Tampa, FL USA | US Map Grid EL88
Airspy HF+ Discovery | Kenwood R-600 + R-2000 | 2x RTL-SDR V3 + NE602 | Si-Tex 200 | Soft66LC4 | Yaesu FRG-7
148' "Shielded" Loop-on-Ground | 18' End-Fed Vertical | 9' + 31' Verticals | 2x PA0NHC MiniWhips

Offline Triker

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Re: Birdies RX-888
« Reply #2 on: June 13, 2021, 1718 UTC »
Thanks a lot. This did help. Still some of them but much less.
https://imgur.com/a/RqbNwey


73 de Roland
« Last Edit: June 13, 2021, 1746 UTC by Triker »

Offline RobRich

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Re: Birdies RX-888
« Reply #3 on: June 14, 2021, 2307 UTC »
Looking much better. :)

Taking the next step, do you have any RF choking on your USB cable? There is a chance some birdies could be coming from the computer itself. Using an USB cable with RF choking and/or winding a few turns of an USB cable through an applicable ferrite can sometimes help.
Tampa, FL USA | US Map Grid EL88
Airspy HF+ Discovery | Kenwood R-600 + R-2000 | 2x RTL-SDR V3 + NE602 | Si-Tex 200 | Soft66LC4 | Yaesu FRG-7
148' "Shielded" Loop-on-Ground | 18' End-Fed Vertical | 9' + 31' Verticals | 2x PA0NHC MiniWhips