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José Jesus (PS8ET) on Twitter: "Antenna J-Pole 145/440 (Desing KN9B) First test on satelitte AO91 I spoke with: PT7MGS, PU1UDS, PY1LT, PS8BR, FY5HB and 9Z4DZ Excellent to carry in the backpack ...
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Ground Plane Base Antenna 2 Meter 70cm Dual Band HDuty Amateur Radio Ham Scanner for sale online | eBay
![Figure 3 from Analysis of J-Pole antenna configurations for underwater communications | Semantic Scholar Figure 3 from Analysis of J-Pole antenna configurations for underwater communications | Semantic Scholar](https://d3i71xaburhd42.cloudfront.net/e32b0fb1a80fdfda1c02531f212c97862119ee3a/3-Figure3-1.png)
Figure 3 from Analysis of J-Pole antenna configurations for underwater communications | Semantic Scholar
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