Monday, December 1, 2025

10m QRSS Challenge: - K4BYN & KQ9RSS in the USA - 1st December 2025

Conditions on the 28 MHz (10m) band are still very good and on the 1st of December 2025, I noticed several QRSS (slow morse) signals just below the WSPR signals on 28.1246 MHz.


Starting from the top...

a) I was getting a very weak signal from WA1EDJ in Georgia and I was able to get a positive ID by piecing together the callsign over several cycles. I had a good capture of WA1EDJ from an opening in March 2024. See previous post.

2) KQ9RSS is the call of the Lower Illinois DX Society and it was a struggle to get a good clean capture in one cycle. From what I understand, the KQ9RSS signal is just 100-150 milliwatts into a half-wave dipole in an attic so I was good to be able to see the signal at the other side of the Atlantic.

KQ9RSS was also QRSS station #30 as part of my 10m QRSS challenge to capture as many images on the band.

3) K4BYN was another new one... #31 and was the strongest of the signals heard. When you look at the screen, the QRSS signal can look quite strong. The reality though to my ear was that the signal from K4BYN was no more than 319 to 419 in strength.

You'll notice from the map below that all three US stations were around the 6000km mark and it was likely via two x 3000km F2 layer hops in the ionosphere.


The remaining signals are G0MBA and G0PKT from the east of England and practically there every day and I think the propagation mode is back scatter. They always seem to have that distinctive back scatter fuzz on the signal.

IK2JET was too weak for a good signal but I was able to get fragments to confirm an ID. I suspect it was backscatter again as the signal was quite spread out in terms of amplitude.

In summary... That brings the QRSS tally so far for 28 MHz up to 31-callsigns & 12 DXCC.

1) 8th Jan 2024: VE1VDM - DXCC #1
2) 10th Jan 2024: VA1VM
3) 15th Jan 2024: G0MBA - DXCC #2
4) 15th Jan 2024: G0PKT
5) 15th Jan 2024: AE0V - DXCC #3
6) 16th Jan 2024: RD4HU - DXCC #4
7) 16th Jan 2024: W1BW
8) 17th Jan 2024: OH5KUY - DXCC #5
9) 18th Jan 2024: TF3HZ - DXCC #6
10) 6th Feb 2024: VA3RYV
11) 16th Feb 2024: IK2JET - DXCC #7
12) 16th Feb 2024: N8NJ
13) 21st Feb 2024: PY3FF - DXCC #8
14) 26th Feb 2024: VE6NGK
15) 27th Feb 2024: NM5ER
16) 28th Feb 2024: VK4BAP - DXCC #9
17) 2nd Mar 2024: WA1EDJ
18) 5th Mar 2024: FR1GZ/B - DXCC #10
19) 30th Apr 2024: IK1WVQ
20) 8th May 2024: IW0HK/B
21) 14th May 2024: IZ1KXQ/B
22) 3rd Jun 2024: M0GBZ
23) 3rd Jun 2024: G0FTD
24) 17th Oct 2024: AA7US
25) 19th Oct 2024: DJ5CW - DXCC #11
26) 21st Oct 2024: KC2CHK
27) 16th Jul 2025: GB3PKT
28) 20th Jul 2025: ON4CDJ - DXCC #12
29) 12th Aug 2025: DL3PB
30) 1st Dec 2025: KQ9RSS
31) 1st Dec 2025: K4BYN

For previous QRSS posts on the blog, click HERE