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PA0SNY PUBLICATIONS and DOCUMENTATION

PA0SNY's Library

In the years that I worked for KLM (1976 - 2017), I have learnt that keeping record of what one is doing, is a solid foundation for an organised workplace. In our radio world I made some sort of publications for measurements on transceivers (S-meter calibration) and antennas . On this page I give you the opportunity to review my personal library. Several publications have an other origin; in that case I will name the source.

Section A - Publications on Antenna Measurements Constructing, measuring and adjusting a DIY-kit End Fed Half Wave Antenna for 40m with extension for 80m. This publication tells the whole story: EFHW 40m + 80m extension After constructing this EFHW Antenna, the measurements and adjustments in June 2020, I made several versions of this document. It has been fully revised, to make it more suitable for the website. Modifying the V2000 with 1m50 radials - a different story Unfortunately this antenna failed in 2023. An attempt to rapair the coil unit at the base was not successful. These C's are very critical regarding the value. I never got it working in the bands again My V2000 has M6 thread in the antennabase, not M5. This called for a different approach from what is normally seen on internet: diameter 6mm threaded ends with 8mm aluminum pipes. Read the V2000 modification by PA0SNY for all the details Constructing a modified Gamma Match Half Wave Dipole for 4 meters (70 MHz) from an (ever purchased) SD-FM Dipole 87-194 MHz by Sirio. A very satisfying result, after various calculations and measuremnents. In the late Nineties I acquired this SD-FM Dipole 87-194 MHz. Because it looked quite cool and sturdy. I made the 2 meter antenna, that never was used. It has been stored in garage and cellar. Read how I gained experience with the Gamma Match, and how this finally resulted in an Antenna that has great resemblance with the Sirio SD68, intended for use on 68 - 78 MHz. Measuring a full size High End Fed Antenna of PE1MWL: Full length 80m EFHW PE1MWL This documents shows how perfect this Antenna can be used on all classic and two WARC HF-Bands.... but only for Region 1 (Europe). Without the use of an Antenna Tuner. Understanding the 'half wave' relation in an EndFedHalfWave Antenna: my quest to understanding the half wave relation An eye opener (for me anyway)

Section B - Publications on Rigs (S-meter) Measurements on the FT-897D S-meter: What the FT-897 S-meter really says Using professional Equipment at the facilities of PI9KLM in Hangar 12 at Schiphol Airport, we improved earlier attempts to compare indicated values with a calibrated source. S-meter scale FT-8900: Explanation of the scale of the FT-8900 After establishing the FT-897D S-meter scale (one cell above), I wanted to know how the FT-8900 scale was reading. I found documentation that helped to understand what each block on the scale means. The file that I present, gives a clear picture. Measuring the S-mater of the IC-7300: S meter measurements ICOM IC-7300 From S8 on, the scale of the S-meter on the IC-7300 is quite reliable. Under S8 we compare indicated versus measured: S6 indicated is S7 measured S4 indicated is S6 measured S2 indicated is S5 measured The meater starts indicating with a S4,5 signal

Section C - Publications on Tools Accurate LC meter for small values: LC-meter van CHN.pdf I use the design (year 2000) by Cor, PA0CHN. Note: this file is in Dutch Z-match Antenna Tuner by Maurice PA9H. See also the Projects Page for some addional pictures of this beautiful construction Many years ago Cor, PA2MCE built a Z-match from a publication in CQ-PA. Maurice PA9H saw the design and constructed his own. Here is a separate page for a Z-Match story in Dutch

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