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I had the same issue. I replaced K1 with the axicom and it fixed it.i only run about 15 watts on 80 meters, but I was switching inductance on my ant tuner often while in transmit. I think that may

WOW! that Wolfwave filter cost upwards of $300 USD!!! My digital filter does everything it does and more (including a color display)... and was less than $50...

I believe this is where the Wolfwave comes in. It is a complete enclosure and GUI with the sotabeams DSP board at its core. A tad pricey but it does everything - including regenerating clean CW from a

Don 28 watts on 80m?? most of us are around 10 watts - could be an inaccurate power meter - or if you really are doing 20-some watts you could be over-driving badly. notice I am suspicious that relay

I have a bunch. I can mail you a couple.

I'm glad you found the answer. I looked at the schematic trying to make a suggestion on what to check but I have no experience with the ubitx. There has been quite a few Cobra mikes used over the last

Go here for schematic and Arduino sketch: Filter ( https://www.sotabeams.co.uk/variable-bandwidth-filter-modules-ssb-cw/ )

Those relays are only rated for two amps @ a not very high voltage; Contacts will eventually wear out on any relay. You can probably find a slightly beefier relay, use it instead, and add a transistor

I have a V3 uBITX that was stuck in TX last night...until I opened the rig up and tapped on the relays to "correct" the problem temporarily. Does anyone know which relay is to blame, and what the

I don't think anyone has mentioned the nanoVNA.? These go from 50 kHz up to 900 MHz, color touch screen, built with rechargable battery and PC sw.? They cost less than 70 USD.? Look at

The sotabeams filters are exceedingly good technically. It's the flexibility and user interface that's stinks. And, of course, it can't be modified, even though the processor has plenty of resource

Stand alone just like you see in the picture. Uses the Audio Adapter/ Shield board from prjc.com, a Teensy 3.6, a small SPI 7735 display, two encoders, and two LEDs. That’s it. Custom code. Not

Success.? The problem turned out to be a short between the mic audio line and ground.? Sunil from amateurradiokits.in had sent me a second front panel PCB after I reported my initial problem to him.

Curt -- I can reflow each pin if I pull up my pants and stop being a whousssssss. Good implyed question on the drive level. SWR meter says 28w on wspr on 80m, which means two full minutes of hard

I've been reading the topics regarding the ssm2167 with much interest.? So finally I integrated the board into my ubitx v5. I ended up with a trimmer on the output of the board, and pots on the

The sofa beams Audio DPS boards...there are several models...are stand alone boards, no coach needed. Simply insert in your audio chain and add power. It works great. Far better than I had hoped. They

The 12/11mhz crystal filter is after all IF amps on receive. The IF amps are operating at very low signal levels, most of the gain is in the audio amps. It's the audio pre-amp (a 2n3904 just before

Don First before we assume its a bad relay, reflow each pin and also reduce the transmit drive level. You never know the relay may be okay. I assume you tried more than one band? Make sure you don't

The JackAl board looks like it is a good all in one upgrade to the uBitx. So it looks like, in all but the more extreme cases, people are happy with DSP audio bandpass filters. Crystal CW filters can

That looks like a cool implementation. Is your audio bandpass filter stand alone or is it an add-on to the Sotabeams filter board? It sounds like it is a stand alone DSP filter and display. Is the