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Yep I was thinking about the varying the signal generator frequency/scope idea.? I wonder if there is a way without disconnecting T2 - adding some resistance or impedance of some sort to match the

47uF rated at 35v

what is the value ?

Actually when it becomes stuck if I wait let's say 20seconds then it works again.

Hi Evan, thank you for the crucial hint. I found the entry in Ians Code from line 1156 and edited it. See there, all the settings that I have previously made in memory manager were taken. Thank you

I ordered the kit from the ubitx.net link on spectral purity:?https://ubitx.net/spectral-purity/ I am assuming that it will include the correct devices. Thank-you for your checking! 73 Evan AC9TU

I hope you ordered the right ones like in the pic! They are shielded and have a resistance of 2 ohms. TDK-EPCOS type is what I used and also some marked S+M ! Raj

Check voltages in audio stage and vogad when the audio is gone. That should tell you where to look!

Raj, Thank-you for clearing that up for me.? I plan on making the modifications you recommend as soon as the parts come. Happy Holidays to you and yours. Evan AC9TU

12vdc from the battery, but after a resistor and the 7805 is 5vdc.

What is the supply voltage for the VOGAD board ?

Hi all, I have tested a mic compressor based on the VOGAD SL6270C (same schematics of its datasheet), and it works very well on the ILER QRPs. However when connected to the ubitx something weird

Evan, The caps are only DC blocking and do not have an effect on the filter. I mounted the coils where convenient. I scraped off the green pcb coating and soldered. You can also mount them exactly in

Chris, There is code in the uBitx software, both from the original and KD8CEC code.? I found the following: //original code with modified by kd8cec ? if (usbCarrier > 12010000l || usbCarrier <

The LPF is designed (we hope) to match the 50 ohm impedance of the antenna...The output (L4/C204) needs to be matched to the input of T2 ...Optimally thats 50 ohms ..connecting your SG across it adds

You're welcomed;? My first run with this (lower output audio than happy with, sans shouting) involved the pre-amp that was built into Midland land mobile radios back in the 1980's.? Having worked

I will give that a try thanks. Nice idea you had on the potentiometer.? I did try something else.? Putting in 1900uv at the antenna gave .1v p-p? where 1900uv at tp1 only gave only about 33mv p-p I

Hi, all. At the risk of seeming OCD, my current firmware and Nextion 2.8" display goes maybe 80% across the screen, I'm sure that I am seeing all of the firmware "screen" that I should see, but it

For mike gain, add an AGC mike board to the mic circuit. Think of this as more along the lines of audio compression than as gain per se.? You will want to put a small elecrolytic cap between this

There ya go ....Transistor is good, elsewise changing the bias would do nothing ..likely the "hum" is being generated because the fool thing is actually amplifying ...Not gonna cost anything extra at