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I may have missed the comment, but does the noise get in to your BitX40 with the antenna disconnected? On my mobile setup I found the BitX40 was very sensitive to noise on the 12v power line, but

Propagation was the worst I ever seen on 20m and above, even K3LR seemed to me weak in the Euroland. Few big on 15m and nothing on 10m. I preferred the park to the contest. Even traditional big

Hi ! Where is the best point to pick up the +12V from this tx/rx relay (K1) I plan to use this (whit another relay) for disconnect an RF Preamp Thanks ! Regards

Lack of shielding could be part of the problem. Another big difference is that the Bitx40 (and uBitx) have most of their rx gain after the demodulator, in the audio amps.?? So more sensitive to

Yes David, it does. It was clear to me that this is not a solo project. Thank you for the clarification. Terry - KB8AMZ Brimfield Twp, OH USA EN91hd Linux User# 412308, Ubuntu User# 34905, PCARS#78,

If the ts-520 doesn't pick up the ignition noise and the bitx-40 does then it is shielding in the radio's that are the difference. A hole cut in the front panel for an lcd is a *big* hole for

Tomasz I think I see the problem. You are referencing the volume control wire colors for the Amateurradiokits case and Ted is referencing the original uBitx audio connector wire colors. The picture

I made 3 DX contacts from my qth in Missouri USA. Got Morocco, Ukraine and Australia. Running ubitx v3 on 20 and 40 meter phone. I gloated after that. Dave k0mbt.

It's a few inches. Connects to tx/rx relay and only turns on during xmit.

All: Several of you have written me saying that you were having difficulty making the wiring harness for the JackAl system because the directions weren't clear. (I believe the word "sucks" was used

He used a digital oscilloscope with FFT capability. Claims that with adjustment, harmonic content is below -50 dB. Mike K5ESS Sent: Monday, April 1, 2019 7:16 AM To: [email protected] Subject:

That's true!? Problem is, I've not been able to figure out how this is happening.? (If it IS acting like a spark gap... the transmissions don't get into the TS-520 sitting beside my chair, with the

If the engine itself is acting as a spark gap transmitter, you will need to put effort in to choking ignition wires etc. Just looking at the radio isn't going to solve a transmitter being next to the

Does anyone know that size of the fan in the back of the enclosure? Also how did you wire up the fan? Does it just run all the time?

I understood that.? The problem is, I'd have to move everything over to try to replicate the setup - and the car is a 90s version too! :-\ (What I WILL try is firing up the van with the radios in

That was my idea for down the road, when I've got far less pressure and a bit more time (finish my degree and find employment). I've got some information (I forget how much) on the design of noise

I don’t get QEX but wonder what method he used to measure the distortion of his circuit. I think the HP334A was useful for that (THD I guess). They still want quite a high price for them on eBay.

Tomasz, *uBITX Firmware CEC Version 1.097Beta? Release* (Include? Nextion LCD, TJC LCD GUI Firmware V3, uBITX Manager V1.097, Standalone Signal Analyzer1 V0.7) Changed Standalone Signal Analyzer1

Ted, I replied my phone number via direct message. let me know if you don't get it. 73's Mike WA3O

Hello. I have uBitx ver 4. with the Nextion display .After many failures with the second raduino in my S-Meter design, I start to think that I have the wrong raduino hardware version. I also noticed