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Has anybody tried to do this with the uBITX? I have a qrp-labs QCX+ kit that does it, and I must confess, I'm getting spoiled. I tried it with my TS590S...nope. Feverishly clacking relays. Dug an

Well, the search continues for the loss in power, and thanks for the suggestions. I did examine R83 and C81 and the appear OK...certainly R83 measures OK and everything looks OK in that area. Thinking

Sounds like yours came from the same batch. - jerry

Hi Jerry! At least I can tell you the Chinese LPF is consistent!! Mine just got here and, lo and behold, there is a 150pF cap on the 80m filter! Just ordered a replacement 1.5nF. Also, 40m is waaaay

Thanks for the encouragement Bob....Al

Hi Vic, Remove one of the relay drive transistors and check it for reference as all on board will be from same spool. If its is better then use that for Q90 and put a new one for the relay! I used to

Vic, put a .1uf cap in parallel with C81 and see what happens. Barry

Did the antenna change? _._ [email protected]> wrote:

Al, I am 82 and I started in 1962 but kept up as I am a retired professor with the subjects in Electronic Technology, Computer Technology, Electronic Media Communications. You can service it. There is

Well, Raj, I just did that. I checked the Hfe of a 2N3904 with leads and it registered at 423, while the "3904"? SMD devices only read? 280, about the same as a 2N2222A, so I suspect this is another

Thank you all for your replies.Unfortunately, I obtained my licence (VE3DLG) in 1963.? The test was entirely on vacuum tubes.? I have not kept up with solid state technology and at 83 years of age,

Look at the pot after Q90. It allow to set output to almost zere.

Jerry, thanks again for your input. The project went over my head so I decided to choose the easier path and ordered an AGC board from kit-projects.com: The installation was quite easy and everything

What I would try Vic is remove the SMD and put back a leaded one and see. If the power comes back up then the SMD ones must be fake. All depends from where you got them! Raj

Thanks, Evan, I'll be looking there. The drop in power occurs with both CW and steady tones on SSB on all bands compared to previous records I had when trying to figure why 40m CW was oddly low. I'll

For sale. ?Bitx V3 Ser No. *∩* 0219/4 . Unassembled as purchased in original shipment case. Audio chip is not the problematic WX brand TDA2822. Included are the assembled but not installed K5BCQ

Hi Vic, I would check that C81, R83, and the traces around them did not get damaged.? The RC combination is used to boost the gain at higher frequencies. Also, can you confirm that you made the power

Although I had leaded components for the Q90 3904 transistor and R82 100 ohm resistor that both failed, I waited to get some SMD devices thinking they might be easier to install, and not very

What is the current value of pre v6 raduinos?? I have one.. was thinking of making a reciever with it but would be willing to part with it .. Reply to email if you wish kd9mdl@...

If you get a replacement I wouldn't mind grabbing your old one for a few bucks to desolder and add an upgrade to.