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I just measured a sensitivity of -134dbm on my V11 version,but changed PCB routing, added a motherboard to minimize wiring, added a lot of regulators and decoupling capacitors, for having this result.

I said it’s BELOW -100 db. After that I start measuring the noise from the fluorescent lights in the room and my wife won’t let me turn them off (her glass lab is in there too). I do have a combo

So I think what you are saying is a standard receiver sensitivity measurement which the ARRL calls "MDS" (minimum discernible signal). Receiver sensitivity is specified in dBm, which is decibels

Ken:If you're like me, you order "pairs" of mpu's "just in case"...it's saved my bacon more than once. Anyway, I'm not sure it's worth $10. If I use just the 4.1, I tie up about $65 for backups. If I

TNX Greg. I will try reducing input and do more sweeps. I had 40db attenuation on output. There a lot more gain on lower frequencies for sure, have you tried changing L2? I have 7 turns on it now. Tim

Circuit and sw details on splitting the functions over two processors? Maybe one of the mcu's could be a T4.0 to save some bucks?

First off, you need to have a good calibrated signal generator… calibrated in db (or mv so that you can convert to db) that is either variable output or you have a good/accurate variable attenuator.

Hi Tim- Check out this post I made a while ago with some videos showing sweeps of the amplifier: /g/SoftwareControlledHamRadio/message/31850 You have to be careful with the input

Yeah, that’s what mine looks like too. Glad you found the issue. I’ve sold over 1,000 of those PA semi-kits now and I’ve only had three people have issues since I started selling them. One was a

Better Scale

I rewound t1,2 and 3. Tested between each rewind, tuned out T3 was culprit, easiest to wind! Not sure what it was ,I may have had a solder bridge across C25 which on revised board is right next to

I'm back for a while and working on kits again. I put a very high priority on the new Display Driver board that fixes the T41 display freeze issue and allows a nice long cable to the display. I offer

I don't know how long it takes for US changes to ripple through the system. I would write Amazon.UK and try to get an answer. Jack, W8TEE

As per title

It has beeen sold Frank

What I'm looking for is the measuring procedure including the instruments you used to get the 100 dB and 78 dB numbers. I would like to run the same procedure on my radios to see what I get. -- 73

**** I'm guessing -100dBm. dB relative to 1 mW. - Jerry, KF6VB

Well there is no real absolute way its done as you probably know, you first need to determine the noise floor (for the mode) and that is usually the point at which the (S+N)/N = 3db (and of course,

That was changed...don't know why it wasn't updated. Jack, W8TEE

Hi Bill, 100 dB relative to what?? How did you measure that? -- 73 Greg KF5N