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SMALL MULTI-BAND HF ANTENNA, QSO DX on 21MHz. SQ8GKU with WH7T HAWAII 11969km, IOTA OC- 019 - YouTube
![EI7GL....A diary of amateur radio activity: Moonbounce on 21 MHz from the worlds largest antenna array for the band! EI7GL....A diary of amateur radio activity: Moonbounce on 21 MHz from the worlds largest antenna array for the band!](https://1.bp.blogspot.com/-R2Pmd4RQozk/XtfA37c8UqI/AAAAAAAAH6A/fZnHIuc4QK4qCPMb-YKADAhpwPR5-S-TgCLcBGAsYHQ/s1600/ES5TV-15m-Antenna-Array.jpg)
EI7GL....A diary of amateur radio activity: Moonbounce on 21 MHz from the worlds largest antenna array for the band!
![a) Phononic band structure around 2.1 MHz. (b) the modal shape at the... | Download Scientific Diagram a) Phononic band structure around 2.1 MHz. (b) the modal shape at the... | Download Scientific Diagram](https://www.researchgate.net/publication/345782593/figure/fig3/AS:957352509456386@1605262033684/a-Phononic-band-structure-around-21-MHz-b-the-modal-shape-at-the-point-marked-with.png)
a) Phononic band structure around 2.1 MHz. (b) the modal shape at the... | Download Scientific Diagram
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