7-band OCF dipole (new QTH): Difference between revisions
Firespeaker (talk | contribs) Created page with "80m 7-band off-center-fed dipole bought from gniklat1 on eBay. Advertised to work on 80m, 40m, 20m, 17m, 12m, 10m, and 6m (tuner needed to cover all of 80m and 10m), with max power 300W PEP, 150W CW, 75W Digital. Advertised to work best in an inverted V configuration with the center at 25-30ft and ends at 8-10ft above ground. Includes 4:1 voltage balun. 2m SWR measurements below just for fun :) == Suspension == About 10m up. Suspended from pulley attached to top of..." |
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=== Initial SWR measurements, 2025-05-17 === | === Initial SWR measurements, 2025-05-17 === | ||
Antenna in air, rope of short end tied taught to fence, rope of long end tied loosely to tree. | Antenna in air, rope of short end tied taught to fence, rope of long end tied loosely to tree. | ||
[[File:20250517155553-80m.png|200px|80m]] | |||
[[File:20250517155553-20m.png|200px|20m]] | |||
[[File:20250517155553-17m.png|200px|17m]] | |||
[[File:20250517155553-12m.png|200px|12m]] | |||
[[File:20250517155553-10m.png|200px|10m]] | |||
[[File:20250517155553-06m.png|200px|6m]] | |||
[[File:20250517155553-02m.png|200px|2m]] | |||
=== After tightening and raising, 2025-05-18 === | === After tightening and raising, 2025-05-18 === | ||
Revision as of 03:11, 19 May 2025
80m 7-band off-center-fed dipole bought from gniklat1 on eBay.
Advertised to work on 80m, 40m, 20m, 17m, 12m, 10m, and 6m (tuner needed to cover all of 80m and 10m), with max power 300W PEP, 150W CW, 75W Digital. Advertised to work best in an inverted V configuration with the center at 25-30ft and ends at 8-10ft above ground. Includes 4:1 voltage balun.
2m SWR measurements below just for fun :)
Suspension
About 10m up. Suspended from pulley attached to top of ~10ft bamboo pole, attached to top of 3rd segment of 3-segment steel antenna mast designed to be ~10m long, but set to be only ~25ft long. Mast a few inches into ground, guy wires tied to spiral ("dog") stakes.
Wiring
Measurements
Initial SWR measurements, 2025-05-17
Antenna in air, rope of short end tied taught to fence, rope of long end tied loosely to tree.
