{"product_id":"hand-made-rf-choke-high-power","title":"Artisan Hand-Made RF Choke | High Power 1.5 kW, All-Band 160-10m, Bench-Tested","description":"\u003cdiv style=\"max-width:860px;margin:0 auto;font-family:Arial,Helvetica,sans-serif;color:#555;line-height:1.65;\"\u003e\n\u003cp style=\"font-size:11px;text-transform:uppercase;letter-spacing:2.5px;color:#b8960c;font-weight:bold;margin:0 0 8px;\"\u003eArtisan · Hand-Made · Custom-Made · High Power 1.5 kW · 160 Through 10 Meters\u003c\/p\u003e\n\u003ch2 style=\"font-size:26px;font-weight:bold;color:#1a1a1a;line-height:1.25;margin:0 0 14px;\"\u003eThe Artisan Choke, High Power — Three Cores for Legal-Limit Stations.\u003c\/h2\u003e\n\u003cp style=\"font-size:15px;margin:0 0 14px;\"\u003eThe same hand-made choke as our 500 W version, built with a third core for stations running an amplifier at legal limit. Coax wound through ferrite by hand, the approach Jim Brown, K9YC, turned into a cookbook: turns multiply, so a wound choke puts far more choking on the outside of the shield than beads alone. Custom-made one at a time, and tested before it ships. Rated 1.5 kW for CW and SSB.\u003c\/p\u003e\n\u003cdiv style=\"background:#fff;border:1px solid #DDD8CC;border-left:4px solid #B8960C;padding:12px 16px;margin:0 0 20px;\"\u003e\u003cp style=\"margin:0;font-size:14px;\"\u003e\u003cstrong style=\"color:#1a1a1a;\"\u003eHand-made means patience.\u003c\/strong\u003e Each one is built by hand, and at times there will be a backlog. Your order holds your place in line.\u003c\/p\u003e\u003c\/div\u003e\n\u003cdiv style=\"background:#1a1a1a;border-left:4px solid #B8960C;padding:18px 22px;margin:0 0 20px;\"\u003e\n\u003cp style=\"margin:0 0 8px;font-size:12px;font-weight:bold;color:#B8960C;text-transform:uppercase;letter-spacing:1px;\"\u003eWhere It Goes on a Greyline\u003c\/p\u003e\n\u003cp style=\"margin:0 0 8px;font-size:15px;color:#e8e8e8;\"\u003eAt the antenna end of the coax, to keep RF off the coax running back to the shack. Tuner in the shack: at the feedpoint, where the coax connects at the base of the pole. Remote tuner at the feedpoint: on the radio side of the tuner, between the tuner and the coax. Same job.\u003c\/p\u003e\n\u003cp style=\"margin:0;font-size:15px;color:#e8e8e8;\"\u003eWant the quietest receive? Add a second at the radio end of the coax, to lower the noise the coax picks up on its way back to the shack.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#f7f4ec;border-top:3px solid #B8960C;padding:14px 18px;margin:0 0 20px;\"\u003e\n\u003cp style=\"margin:0 0 6px;font-size:12px;font-weight:bold;color:#b8960c;text-transform:uppercase;letter-spacing:1px;\"\u003eFull Power, Honestly\u003c\/p\u003e\n\u003cp style=\"margin:0;font-size:15px;\"\u003eThree cores give the heat more ferrite to spread through, and the waterproof box leaves air around them. Rated 1.5 kW for CW and SSB. Running hours of full power at 100% duty, like long FT8 or RTTY sessions? Tell us your station in the order notes; any enclosed choke works hardest there, and we'll match the build to it.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003ch3 style=\"font-size:19px;font-weight:bold;color:#1a1a1a;margin:0 0 10px;\"\u003eWhat Artisan Means Here\u003c\/h3\u003e\n\u003cp style=\"font-size:15px;margin:0 0 10px;\"\u003e\u003cstrong style=\"color:#1a1a1a;\"\u003eCoax, not wire.\u003c\/strong\u003e Many production chokes are wound with two-wire (bifilar) line, and if the turns aren't evenly spaced, the capacitance between them works against the choke. Coax holds its spacing. Each one is wound by hand with RG400, Teflon-insulated, which takes far more heat than foam-insulated coax.\u003c\/p\u003e\n\u003cp style=\"font-size:15px;margin:0 0 10px;\"\u003e\u003cstrong style=\"color:#1a1a1a;\"\u003eFerrite chosen for the job.\u003c\/strong\u003e Not just the standard mix: the ferrite is selected for the most series resistance, the part of a choke that actually absorbs the unwanted current.\u003c\/p\u003e\n\u003cp style=\"font-size:15px;margin:0 0 10px;\"\u003e\u003cstrong style=\"color:#1a1a1a;\"\u003eEvery one tested.\u003c\/strong\u003e Each choke is bench-tested into a 50-ohm load before it ships. Not mass-produced, and never shipped untested.\u003c\/p\u003e\n\u003cp style=\"font-size:15px;margin:0 0 20px;\"\u003e\u003cstrong style=\"color:#1a1a1a;\"\u003eCustom-made for your station.\u003c\/strong\u003e Need a different connector or something special for your setup? Say so in the order notes and it's built that way.\u003c\/p\u003e\n\u003cdiv style=\"background:#fff;border:1px solid #DDD8CC;border-left:4px solid #B8960C;padding:14px 18px;margin:0 0 20px;\"\u003e\n\u003cp style=\"margin:0 0 6px;font-size:12px;font-weight:bold;color:#b8960c;text-transform:uppercase;letter-spacing:1px;\"\u003eConnectors\u003c\/p\u003e\n\u003cp style=\"margin:0;font-size:15px;\"\u003eSO-239 on both ends, in a waterproof box. At the base of a Greyline, the ladder-line adapter's PL-259 plugs into one side and your coax into the other: no barrels, no extra joints.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cp style=\"font-size:15px;margin:0 0 20px;\"\u003eRunning 500 watts or less? The \u003ca href=\"\/ar\/products\/hand-made-rf-choke\" style=\"color:#b8960c;font-weight:bold;text-decoration:none;\"\u003e500 W Artisan Choke →\u003c\/a\u003e is the one most stations want, at $119.\u003c\/p\u003e\n\u003cp style=\"font-size:13px;color:#888;margin:0 0 12px;\"\u003eHow you'll know it's working: if your signal was showing up on the TV, the computer or the speakers, that should stop, and the noise floor on receive should come down. \u003ca href=\"\/ar\/collections\/rf-choke-1-1-current-balun-cmc-common-mode-choke\" style=\"color:#b8960c;font-weight:bold;text-decoration:none;\"\u003eBeads or wound? The two kinds →\u003c\/a\u003e\u003c\/p\u003e\n\u003cp style=\"font-size:13px;color:#888;font-style:italic;margin:0 0 10px;\"\u003eHam Radio is fun again! Pass it on… 73, Jon KL2A · Greyline Performance · 435-200-4902\u003c\/p\u003e\n\u003cp style=\"font-family:'Courier New',monospace;font-size:10px;letter-spacing:2px;text-transform:uppercase;color:#b8960c;margin:0;\"\u003eHand-made · WA1BXY\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Greyline Performance","offers":[{"title":"Default Title","offer_id":50355324420373,"sku":null,"price":159.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0028\/2571\/5779\/files\/IMG_2956.jpg?v=1793651387","url":"https:\/\/greylineperformance.com\/ar\/products\/hand-made-rf-choke-high-power","provider":"Greyline Performance Antennas","version":"1.0","type":"link"}