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Yes I remember this. Look carefully to see if you may have misinstalled the connectot. Mine had an extra plastic only pin, and is easy to misalign. Or missed solder somewhere. Curt

I fired up my ubitx V4 for the first time. When you turn the encoder, the frequency only changes by .050 the goes right back. I removed the encoder and used a jumper wire to try to simulate a encoder.

I agree, 10W on 40 should be reference of modulation level. I have not got my hands on a v5 and when I do I will report. Raj

Getting 15W on 40 is pushing for excess... should be about 10. And 2W is about all you get on 15 and 10 with out amp mods.? Likely less. More audio more power but there is a point of distortion as

Harvey The filter is rather narrow and if you off a little it will reduce signal.? So 33mhz and 12 mhz are not? fine enough numbers to call if they are correct. The "12mhz" should be more like

I have minimal mods (except for the Axicom I did) on my ver. 3 ubitx (still with the original firmware). The biggest addon is a SL6270C Plessey Vogad compressor between the dynamic mic and the mic

I will try removing the output stage voltage and see what happens. When I measured the frequency into the 45MHz filter I see 21MHz on my counter. To check if my counter is working properly, I measured

Wow, test equipment is everywhere. a single tone will get us started. Of course I knew the last mixer is biased away for cw, but easy to forget. In our group build we line them up to test both cw and

Farhan, Under "Binaural beats" on the left pane, we can generate dual tones. Raj

Very slick

Hello ! Here it is : https://drive.google.com/open?id=1hhT834HwT4gM5bP21fYhNoPKIvNzeVqI You can also visit KD8CEC' site who wrote new firmwares for V5 and needs beta testers http://www.hamskey.com

you can generate a tone at 1 khz from here: http://www.onlinetonegenerator.com Once you connect your pc to ubitx, measure the audio at mic input to be 50 mv peak(100 mv peak to peak). Then you can

help where can I find v5,1 hex file? I can not compile v5.1 in ide I need? help thanks John wb7wqk

Hi hf signals or home brewers.?If I can not successfully load new firmware 1.08?into v4 raduino.to fix low audio problem.?can I purchase a new v5raduino.( and the approximate price )and will it

Jim is operating in CW mode, CLK0 and CLK1 shut down, so no 2x45mhz=90mhz harmonic coming out of the IF amp to create the 16mhz spur when operating on 10m. That spur check will have to wait for his

Hi Bruce thanks so much for the info on down load .will take bitx and down load to club tomorrow .let you know how it goes thanks again .Will Bennett VK4WBX

Hello Jon, To identify your uBitx board version, look near connector P2, it says "uBitx Vx". Then have a look at this post below which points to the wiki from where the various schematics have been

Harvey, Disconnect the power wire to the PA, i.e. center wire on power plug and then make measurements. I suspect that 400mV is the L5 picking up PA signal. The level at L1 which is input to PA I

Jon V3 has the TDA audio amp. V4 has a discrete transistor audio amp. New V5 has a LM386 audio amp, and some new refinements including a different 2nd IF. All factory versions are supplied with IRF510

Jon you don’t say when you received your uBITX. If our board has the discrete transistor audio amplifier then yours is a version 4 and the 2018 schematic is correct. There was a long thread about