465
Item nr.
Prototype antenna, replaced by E3
Production | The Netherlands, 2017. |
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Bands | Continental Shortwave (3800-11000kHz). |
Cabinet | Plastic. Size 13x13cm. Weight 250gr. |
Documents | Design sheet. |
Obtained | 7/2017 from Home built. |
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Condition | 7. |
Disposed | Scrapped 8/2021. |
The tuning range did not come out completely as I hoped, it runs from 3800kHz to 11MHz. Nonetheless, this covers all shortwave broadcast bands I wanted. Later I reduced the number of turns from 4 to 3 (to extend the range on the higher end). In the Spring of 2021 I made the coil switchable between 2 and 5 turns. With 2 turns the upper frequency goes to about 15MHz, but the quality of "switched" loops is less. I observed this earlier with the "Mother of all Raam Antennas". The E2 was dismantled on August 11, 2021, and I used its parts and the experiences gained with it for its successor, the E3.