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Very nice, Greg! Jack, W8TEE

Demo of the new AGC in T41EEE.9: https://drive.google.com/file/d/1kgLZ_y-1xVc4QN0M9kNv9v5RzguR9nW1/view?usp=sharing Compressor2 is part of the Open Audio Library.? Bob's Tiny Ten Transceiver uses it

Hi Oliver, you're generally right, but missing one important detail.? The harmonic copies coming out of the QSE circuitry will mix with the fundamental in the power amplifier and produce

Yeah exactly right… everyone is use to having a BPF in transmit to clean up the signal before transmitting…. But what many SDRs are missing is a preselector… a band filter mechanism in receive

Bill can comment further, but the BPF should be in the signal path in both RX and TX mode. In TX mode it cleans up the signal before it goes to the PA. This means that higher-order harmonics of the

That's right Dave -- you null the lower image if you're in a USB band, and vice versa

Well, I did some more troubleshooting and this is what I found: I stuck some troubleshooting code at the beginning (first line) of loop().? Draw a line on the display.? Well, looked like setup never

Yeah you can short C14 and C16 but C15 needs to be a 0.1uf… I’ll fix that on the Carrier board for the PIN DIODE TR switch… Dr. William J. Schmidt - K9HZ J68HZ 8P6HK ZF2HZ PJ4/K9HZ VP5/K9HZ

When doing the TX IQ calibration of the higher bands that use USB, do you null the lower image? dave, n3ds

I solved my oscillation problem.? I did not populate the 1.8MHz HPF.? I placed shorts across the capacitors forgetting that the MASWSS0179TR RF Switch needs DC blocks.? I now have >65 dB isolation

Not at this time Tim

You have the compensation cap in place on the primary of T3? Dr. William J. Schmidt - K9HZ J68HZ 8P6HK ZF2HZ PJ4/K9HZ VP5/K9HZ PJ2/K9HZ VP2EHZ Owner - Operator Big Signal Ranch – K9ZC Staunton,

Tnx Henning SA was not overdriven, I did the 60dBM plot first and did not want to change anything. The low bands were 12W so exceeded scale. SA had a lot of headroom left, I had 40dB attenuator in

Although I didn't know Mike well he took the time one day to spend several hours on AnyDesk probing my Mac trying to resolve an issue with how WSJT-X interfaced with my Icom IC-7851. Mike was a fellow

Did you find it? Dr. William J. Schmidt - K9HZ J68HZ 8P6HK ZF2HZ PJ4/K9HZ VP5/K9HZ PJ2/K9HZ Owner - Operator Big Signal Ranch – K9ZC Staunton, Illinois Owner – Operator Villa Grand Piton - J68HZ

Even if you don't know who Mike is, you know his work.? Mike was a key developer of hamlib in addition to many, many other contributions to our hobby.? I only had the privilege of a few email

Tim, You plot shows some overdriving at low frequencies of either the Pa or the SA. So either increease the reference level to +20 dBm, or use a 10 dB attenautor at the SA?s input or lower the output

to be honest, I would have expected to know which mistake was the cause. It might be helpful for others. mistakes are meant to be learned. If no mistakes are made, there is nothing to learn. Again,

Thanks Oliver for the link glenn vk3pe

The scans checks for the presence of an I2C device at all valid addresses -- if it finds a device at a particular address, it prints a notification to tell you so and continues searching. As you