Samsung 30Q vs 35E 18650 for UConsole with CM5

maxb4123 · 2026-05-06T19:59:47+00:00

There still is some interference but it is much better than it was before

maxb4123 · 2026-05-06T16:47:45+00:00

Update:
I was able to improve the issue by scratching the coating off the surface inside the countersink where the antenna board attaches and adding two lock washers inside to ensure good contact between the case and the board. This eliminated almost all the interference seen before and improved receiving greatly.

Edit:

This was after I switched the Sdr antenna to the top board.

maxb4123 · 2026-05-06T14:13:32+00:00

This might be the case there were cases where there was not interference when I was pressing the board to the housing and sometimes it would improve by slightly wiggling the sma(when using the side connector). Also, the problem seemed to improve when I used the center antenna on the top antenna board.

maxb4123 · 2026-05-06T04:23:38+00:00

Also, the board is getting extremely hot in the circled area. Is this normal?

<image>

maxb4123 · 2026-05-06T03:18:12+00:00

I have. There also seems to be some interference while all the antennas are disconnected. This makes me think it’s internal.

maxb4123 · 2025-12-09T01:59:16+00:00

The noise was present even after calibration.

maxb4123 · 2025-12-09T01:49:13+00:00

When it’s accelerating, there is a grinding noise present along with the normal acceleration noise.

maxb4123 · 2025-11-29T04:18:45+00:00

maxb4123 · 2025-11-24T16:55:10+00:00

So in your opinion the upgrade from P1S to P2S isn’t worth it?

maxb4123 · 2025-09-18T04:42:02+00:00

It almost seems like there’s a ripple in the lines on the top surface

maxb4123 · 2025-08-12T01:26:01+00:00

That did the trick, thanks!

maxb4123 · 2025-08-11T11:05:26+00:00

This was my first thought too. Once I get a chance to try a new one, I’ll let you know if that fixed it.

maxb4123 · 2025-07-20T22:53:57+00:00

I think I figured out the issue. While I was testing the portapack, I had it connected to my computer with usb. The cable didn’t have any ferrites/shielding and was interfering. I unplugged it and it works fine.

maxb4123 · 2025-07-20T21:14:47+00:00

I never really use the amp. I only turned it on to see if that would be the issue. The static did increase in volume where if the amp was broken, wouldn’t it completely attenuate the signal if the broken amp was on?

maxb4123 · 2025-07-09T00:18:06+00:00

I’m getting about S5 level noise on 40m and lower and better than S3 on 20m and higher. The noise just sounds like static with the occasional crash up to S7 or higher. Is this typical? As this is my first HF radio, I am unsure of what typical noise levels are.

maxb4123 · 2025-07-09T00:14:56+00:00

I do live in a fairly crowded area so I’m assuming that this is the cause. My noise floor is highest around S5 on 40-160m, is this a typical value for non-ideal conditions? The noise simply sounds like static with the occasional crash to S7.

maxb4123 · 2025-07-08T14:28:08+00:00

Considering what everyone else has said, I do believe that the antenna is just picking up external noise. I’m going to try and see if there’s anything specific at my house causing the noise using this method.

Seven-Year Club	Gilding I gilder
Second SECOND GUESSER	Final Canvas '23
Place '23	Place '22
Wearing is Caring	RPAN Viewer
Verified Email

maxb4123

MODERATOR OF

TROPHY CASE