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Yes and recommended conditions are for SMPS and similar operations where the device is saturated.? Not the graph,? charge on the gate to specify operating behavior? its about the amount of charge

got my new to me used sbitx v2 up and running? did the calibration to the rf meter and swr bridge? meter now shows correct rf out and power is now up to standards . happy camper here..now to finish

I agree with farhan, The 12V bias is fine.? However the source of that bias is unfiltered 12V and it can have power supply and RF noise on it.? It makes the radio extremely sensitive to self

The Elecraft mics, I know, require bias or you get no output. 73, -- Dave, N8SBE

The transmit audio problem is usually a challenge if the microphone is picking up RF. There are hundreds of these radios that are working with the 12v bias, so it is less a design issue and more an

Why is the microphone voltage so high? My friend measured and saw almost 12 volts. He the placed variable resistor across tge circuit reduced to 3.5v and had a lot better transmit audio. Please advise

Hi agn Just got notification from DHL they are delivering on Tuesday. Regards Richard.

Hi Ashhar, I think I get it. ?Because the DE unit uses relays and the V2 uses diode switching to manage operational functions, slight differences in the switching code is required by

Hi Thomas Thank you for the update. Regards Richard.

Richard and Dave, There is no particular day that we ship the orders. We only ship orders once the calibration and testing is done. This often happens in batches as we cannot hurry the procedure and

If I remember correctly, I thought someone said that shipping only happens on one day per week.? Not sure which day (I thought it was Monday), but I could be entirely wrong about all of that so

That makes a lot of sense.? So the TX calibration is required if it is necessary to change the finals, correct? Does that hold up over a normal temperature range?? I don't mean a full commercial

Hi Are these sent in batches, mine has said " Current status : Packed, ready to go" for a couple of days now ?. Richard G7OED

Dave, This is the reason why we have this painful tx calibration routine to level the output. The device variations are prettt wide.

I tried my Elecraft mic which I know works, with the same result.

Yes, they do apply in analog use.? They aren't directly applicable, but they represent the ability of the device to change voltage level.? A slow switch is going to have a low Ft.? The IRF510 is

Can you try the 2 tone mode and check the power output? Is it possible that there is a problem with the mic? The low level RF indicates that there is marginal output from the digital parts. I would

I Just upgraded the software to the latest on github. ?Then I Tried transmitting into a 10 watt dummy load and measuring power out on a qrp meter with various modes on 20m. With the drive set at 39 I

Hi Aaron, From what you are describing, I would guess that the Nano on the Raduino has stopped communicating with the display.? I would check the wiring to verify that nothing has come loose.? You

Dave, Ton and Toff do not apply in analog use.? Those are saturated switch numbers. Unlike bipolar MOSFETs do not exhibit FT (Frequency where gain goes to 1).. They sorta do but the mechanism is