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  • A magnetics review of the VK3AMP Sontheimer directional coupler 03/03/2021
  • Basic measurements of the VK3AMP Sontheimer directional coupler for a N2PK wattmeter 02/03/2021
  • Failure estimating transmission line Zo – λ/8 method – nanoVNA – Smith chart perspective 01/03/2021
  • Failure estimating transmission line Zo – λ/8 method – nanoVNA 28/02/2021
  • Select a ferrite core material and sufficient primary turns for a low InsertionVSWR 50Ω broadband RF transformer – comparison of measured and predicted 26/02/2021
  • Fair-rite’s ‘new’ #43 permeability data (2020) 26/02/2021
  • A Smith chart should go round in circles 25/02/2021
  • Surely there cannot be more forward power than the transmitter makes? 25/02/2021
  • Select a ferrite core material and sufficient primary turns for a low InsertionVSWR 50Ω broadband RF transformer – nanoVNA – loss components graph 24/02/2021
  • A DIY thermostat based on the MS1230A controller 23/02/2021
  • Select a ferrite core material and sufficient primary turns for a low InsertionVSWR 50Ω broadband RF transformer – nanoVNA 23/02/2021
  • Phase of s11 and Z 21/02/2021
  • The quarter sized G5RV with hybrid feed 21/02/2021
  • A thermostatically controlled pot for waxing leg hold traps 21/02/2021
  • The devil is in the detail… 19/02/2021
  • Optimal common mode impedance of a common mode choke 18/02/2021
  • Fox flasher MkII update 2/2021 18/02/2021
  • Improving ‘s21 shunt-through’ measurement of low impedances – more detail 18/02/2021
  • Improving ‘s21 shunt-through’ measurement of low impedances 17/02/2021
  • Antenna system resonance and the nanoVNA 16/02/2021
  • Improving ‘s21 series-through’ measurement of high impedances – more detail 15/02/2021
  • Improving ‘s21 series-through’ measurement of high impedances 14/02/2021
  • Nichols: The Two Bird Experiment – a Simsmith model 12/02/2021
  • Calculate Loss from s11 and s21 – convenient online calculator 11/02/2021
  • Measure transmission line Zo – nanoVNA – PVC speaker twin 08/02/2021
  • Measure transmission line Zo – nanoVNA – CCS RG6 07/02/2021
  • Nichols: The Two Bird Experiment 07/02/2021
  • Conductors for a Guanella 1:1 balun – discussion 03/02/2021
  • The requisite knowledge does not come in the box 03/02/2021
  • nanoVNA – touch screen problems 02/02/2021
  • nanoVNA – measure Transmission Loss – example 5 30/01/2021
  • High voltage test of a couple of PTFE insulated silver plated copper wires 28/01/2021
  • An example and explanation of unexpected common mode choke flashover 28/01/2021
  • Mornhinweg ferrite core measurements – #61 27/01/2021
  • Using complex permeability to design with Fair-rite suppression products 27/01/2021
  • Black body emissivity of ferrite core material 26/01/2021
  • Calculate ferrite cored inductor – rectangular cross section – enhancement – chamfered corners 25/01/2021
  • MH1210A, MH1230A operating instructions 24/01/2021
  • Jaycar LO1238 ferrite core 22/01/2021
  • Mornhinweg ferrite core measurements – #31 21/01/2021
  • Gauss based ferrite core loss 19/01/2021
  • Disturbing the thing being measured – coax line 18/01/2021
  • Amidon’s method of rating ferrite inductors and transformers 15/01/2021
  • Quantifying performance of a simple broadcast receive system on MF 11/01/2021
  • nanoVNA – measure Transmission Loss – example 4 09/01/2021
  • KL7AJ on the Conjugate Match Theorem – analytical solution – Simsmith 09/01/2021
  • nanoVNA – measure Transmission Loss – example 3 08/01/2021
  • nanoVNA – measure Transmission Loss – example 2 07/01/2021
  • nanoVNA – measure Transmission Loss – example 1 06/01/2021
  • Magnitude and phase of V2/V1 for a 180° transmission line section 04/01/2021

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Tags

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Tag: IC-7410 tests

IC-7410 tests – 03 – Noise Figure

An article in a series documenting measurements on an IC-7410.

This focuses on receiver Noise Figure.

Continue reading IC-7410 tests – 03 – Noise Figure

Last update: 19th June, 2014, 9:59 PM
Posted on 15/03/201419/06/2014Categories Amateur Radio, Receivers, TransmittersTags IC-7410 tests, Noise FIgure Meter

IC-7410 tests – 02 – digital audio output

An article in a series documenting measurements on an IC-7410.

This focuses on digital audio output level encoding headroom.

Continue reading IC-7410 tests – 02 – digital audio output

Last update: 19th June, 2014, 10:00 PM
Posted on 10/03/201419/06/2014Categories Amateur Radio, Receivers, TransmittersTags IC-7410 tests

IC-7410 tests – 01 – linearity

An article in a series documenting measurements on an IC-7410.

Continue reading IC-7410 tests – 01 – linearity

Last update: 14th March, 2014, 4:02 PM
Posted on 10/03/201414/03/2014Categories Amateur Radio, Receivers, TransmittersTags IC-7410 tests
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