RX888 SDR – Airband Radio

October 2026

I’m experimenting with an RX-888 MK2 SDR – this is an excellent receiver due to it’s 32MHz bandwidth, allowing you to monitor the full HF band.

I’m running Ubuntu 24.04 with ka9q-radio & wa2n ka9q-web web interface.

Previously I was using a WellGood v4.1 loop antenna built by Mike with a Coax loop attached to a hula hoop but it became evident that the WellGood has a noise jump peaking around 21MHz

I’m now using the N4CY version of a LZ1AQ loop antenna with the same Coax loop.

I have now added a Sharman AR-600XL antenna rotator

One of the major challenges has been reducing interference which continues to be an ongoing battle. Here are some of the things I have done so far:

Once connected this is the spectrum display I’m seeing

Unfortunately I suffer from VDSL interference between 8.5 MHz to 12MHz which is band U2 according to this document

The VDSL interference is not originating from my property as I have fibre internet and I’ve been unable to eliminate or reduce the interference.

Next Steps to reduce interference

- Mains power line filtering using a GM3SEK Mains Filter
- Material 75 ferrites to be placed on all power leads in the house Fair-Rite

Links

Previous page with my experiments reducing interference www.airband-radio.co.uk/rfi