As part of National Field Day/ VHF hill topping, Our team (VU2MUD, VU2AE, VU2IBI, VU2XE) decided to stack two similar VHF Yagis and experiment with its performance. While it was not a complete success, we learnt a lot from the experience. Following is the presentation which I did at BARC's monthly meeting.
https://drive.google.com/file/d/1e0DVj9Ey5Pih_qoeiBCVHCUFyINs_1qi/view?usp=sharing
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Kiran