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- 16:26, 2 November 2021 diff hist +195 Portsdown NF Meter →Sources of Error
- 21:57, 1 November 2021 diff hist +170 Portsdown 4 Signal Generator →Using the LimeSDR Mini as the Output Device
- 21:56, 1 November 2021 diff hist +205 Portsdown 4 Signal Generator →Using the DATV Express as the Output Device
- 21:29, 1 November 2021 diff hist +419 Portsdown NF Meter →Measuring Gain and NF of a Preamp
- 21:23, 1 November 2021 diff hist 0 Portsdown NF Meter →Measuring Gain and NF of a Preamp
- 21:22, 1 November 2021 diff hist +1,347 Portsdown NF Meter →Measuring Gain and NF of a Preamp
- 21:15, 1 November 2021 diff hist +27 N File:Nfdevice.jpg File uploaded with MsUpload
- 21:02, 1 November 2021 diff hist +654 Portsdown NF Meter →Preparing for a Measurement
- 20:55, 1 November 2021 diff hist +1,815 Portsdown NF Meter →Making a Measurement
- 18:21, 1 November 2021 diff hist +119 Portsdown NF Meter →Making a Measurement
- 18:20, 1 November 2021 diff hist +558 Portsdown NF Meter →Equipment Required
- 18:20, 1 November 2021 diff hist +27 N File:Nfmeter.jpg File uploaded with MsUpload current
- 18:10, 1 November 2021 diff hist +172 Portsdown NF Meter →Equipment Required
- 15:31, 1 November 2021 diff hist +1,107 Portsdown NF Meter →General Principle
- 15:20, 1 November 2021 diff hist +890 Portsdown NF Meter →General Principle
- 14:46, 1 November 2021 diff hist +1,077 N Portsdown NF Meter Created page with "The Portsdown 4 includes a Noise Figure Meter (STILL UNDER DEVELOPMENT) that uses the LimeSDR Mini and a user-provided noise source and custom switching power supply to provid..."
- 14:30, 1 November 2021 diff hist +333 The Portsdown DATV transceiver system →Portsdown Test Equipment
- 14:20, 1 November 2021 diff hist +34 The Portsdown DATV transceiver system →Portsdown DATV receiver
- 18:41, 26 October 2021 diff hist +8 Portsdown Test Cards →Introduction
- 18:40, 26 October 2021 diff hist +852 Portsdown Test Cards →Callsign Caption