Gary @N8DMTJul 20, 2025

Who needs a 3D printer when an ARCHER Deluxe Project Case is awaiting easy installation of the DC/DC converter board with a BNC jack added to the case side wall?

Pondering adding an input-voltage-present LED indicator as well. (Maybe output LED too?) Hoping to wrap this project up in the near future.
#HamRadio #RFtest #NOS

Show threadGary @N8DMTJul 20, 2025
Noise Source Project Completed: Finished up the +28V DC power supply to go with the Noise Com NC3404T source. It’s a working system at this point. Will further characterize the noise level and useful frequency range in the days ahead.
#HamRadio #TestEquipment #NoiseSource
Show threadGary @N8DMT

For those following along on the NoiseCom NC3404T noise source journey, the second blog posting is completed. TLDR: It works, covers more than the frequency range specified on the label, and should be a great addition to the home lab.
#HamRadio #TestEquipment #NoiseSource

More photos and screen shots are at:
https://qsl.net/n8dmt/rf-noise-source-part-2/index.html

Jul 21, 2025 at 7:43pmWeb
Show threadGary @N8DMTJul 26, 2025
Completed the proto Arduino Noise Source PC interface allowing SATSAGEN to automatically turn on and off the noise source under that program’s control enabling super easy measurements. Next will look in the lab stock for any more NOS plastic RS enclosures (pretty sure there is at least one larger box out there). Will add the LED’s to final package to make the PC control function visible when in use. Plan to measure a few amplifiers soon.
#HamRadio #TestEquipment #NoiseSource #NoiseFigure
Show threadGary @N8DMTJul 27, 2025
First RF Amplifier measured with new gain and noise figure system. Measuring ZHL-1042 with 25 dB input attenuator on NS output (ENR adjusted), DUT amplifier, 5 dB pad on output to cable to 5 dB pad on SDR RX input. Expecting to see ~28 dB gain (measure 23 dB gain with 5 dB pad in-line) and ~ 5 dB NF. Looks good for a quick test…
#HamRadio #TestEquipment #NoiseSource #NoiseFigure