{"product_id":"pac-12-portable-shortwave-antenna-8-band-outdoor-balcony-rack-antenna-7mhz-50mhz","title":"JPC-12 Portable Shortwave Antenna 8-Band Outdoor Balcony Rack Antenna 7MHz-50MHz","description":"\u003cp\u003eJPC-12 7MHz-50MHz 100W Multi Band HF Shortwave GP Antenna QRP For Ham Radio\u003cbr data-mce-fragment=\"1\"\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003cstrong\u003eProduct parameters:\u003c\/strong\u003e\u003cbr data-mce-fragment=\"1\"\u003e1. Packing weight: about 1.35kg Packing size: 36*22*4cm\u003cbr data-mce-fragment=\"1\"\u003e2. The shrinkage length is about 34.5cm, and the erection length is about 410cm\u003cbr data-mce-fragment=\"1\"\u003e3. Frequency: can work in 8 bands (7mhz-50mhz) at 40.30.20 17.15.12.10.6 meters.\u003cbr data-mce-fragment=\"1\"\u003e4. Impedance: 50 (Ω)\u003cbr data-mce-fragment=\"1\"\u003e5. Rolling power: 100w\u003cbr data-mce-fragment=\"1\"\u003e6. Longitudinal wave: 40m swr band \u0026lt;1.3, other bands can be adjusted to 1.1\u003cbr data-mce-fragment=\"1\"\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003cstrong\u003eSlider reference data:\u003c\/strong\u003e\u003cbr data-mce-fragment=\"1\"\u003eClose to the aluminum tube for 4 turns of 7mb, the pull rod retracts about 10cm, and the foot wave is 1.1-1.3\u003cbr data-mce-fragment=\"1\"\u003eThe position of the 14mb slider is close to the side of the rod antenna 6 turns and pulls back about 20cm. Foot wave 1.1-1.3\u003cbr data-mce-fragment=\"1\"\u003e21.4 Aluminum tube and 4 pole antenna, 7-10cm, vertical wave 1.1-1.3\u003cbr data-mce-fragment=\"1\"\u003e29.6 As long as the antenna is pulled out from the pole, everyone pulls back about half a section, the standing wave is 1.2\u003cbr data-mce-fragment=\"1\"\u003e \u003cbr data-mce-fragment=\"1\"\u003e\u003cstrong\u003ePrecautions:\u003c\/strong\u003e\u003cbr data-mce-fragment=\"1\"\u003e1 Put the ground grid connection ring directly on the screw of the ground anchor and screw it into the base. Then there are the link base - four aluminum tubes - loading coil - rod antenna.\u003cbr data-mce-fragment=\"1\"\u003e2. In the case of standing wave adjustment, if there is a talent analyzer, first find the lowest point of the standing wave to see whether the resonance frequency is high or low. If the resonant frequency is high, it means that the antenna is short. To lengthen the rod antenna or increase the number of turns of the loading coil, if the resonance frequency is low, shorten the antenna of the rod antenna or reduce the number of turns of the loading coil.\u003cbr data-mce-fragment=\"1\"\u003eIf there is no talent meter, use the standing wave meter that comes with the radio, set it to FM, AM or RTTY mode, reduce the transmit power to about 10 watts, press the transmit button, adjust the radio frequency knob, and search for each frequency band. The minimum point of standing wave, look at the level of resonance frequency, and then use the above method to adjust\u003cbr data-mce-fragment=\"1\"\u003e3. When using the ground net, tear 3-4 pieces. The antenna impedance can be changed by adjusting the angle of the ground grid.\u003cbr data-mce-fragment=\"1\"\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003cstrong\u003ePackage included:\u003c\/strong\u003e\u003cbr data-mce-fragment=\"1\"\u003e1 x Aluminum Alloy Base (anodized to black)\u003cbr data-mce-fragment=\"1\"\u003e1 x Multi-band Load Coil (40m - 10m; material: nylon. Note: Load coil is processed by opening mold instead of manual manufacturing)\u003cbr data-mce-fragment=\"1\"\u003e1 x Ground Anchor 10 x 240 mm (not plated to maintain good grounding)\u003cbr data-mce-fragment=\"1\"\u003e4 x Alumina Tubes Black 19 x 320 mm (anode sandblasting oxidation)\u003cbr data-mce-fragment=\"1\"\u003e1 x 2.5 m Stainless Steel Telescopic Antenna (thickness can be customized)\u003cbr data-mce-fragment=\"1\"\u003e1 x 10-strand Ground Wire Cable (tear as needed when using; generally tear 3 strands)\u003cbr data-mce-fragment=\"1\"\u003e1 x Cloth Bag\u003cstrong style=\"color: #ff2a00;\"\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e?\u003c\/p\u003e","brand":"CarLightBulb","offers":[{"title":"Default Title","offer_id":43237304074402,"sku":"E002-B913~2","price":87.88,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0463\/7012\/8034\/products\/fc28ca03819ff67541dd21bd9f2ab82d_a935ea65-2fe8-471d-a6b8-6650e205b983.jpg?v=1681974979","url":"https:\/\/carlightbulb.com\/products\/pac-12-portable-shortwave-antenna-8-band-outdoor-balcony-rack-antenna-7mhz-50mhz","provider":"CarLightBulb","version":"1.0","type":"link"}