{"title":"MFJ","description":"","products":[{"product_id":"mfj-812b-vhf-swr-wattmeter","title":"MFJ 812B VHF 144-220MHz SWR\/Wattmeter (Pre-Owned)","description":"\u003cp data-start=\"0\" data-end=\"190\"\u003eThe \u003cstrong data-start=\"4\" data-end=\"34\"\u003eMFJ-812B VHF SWR\/Wattmeter\u003c\/strong\u003e is a compact, reliable test instrument designed for amateur radio operators working in the VHF range. Here’s a clear product-style description you can use:\u003c\/p\u003e\n\u003chr data-start=\"192\" data-end=\"195\"\u003e\n\u003cp data-start=\"197\" data-end=\"239\"\u003e\u003cstrong data-start=\"197\" data-end=\"239\"\u003eMFJ-812B VHF 144–220 MHz SWR\/Wattmeter\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp data-start=\"241\" data-end=\"494\"\u003eThe MFJ-812B is a precision VHF SWR and power meter designed for accurate measurement of forward and reflected power in the 144–220 MHz range. Ideal for amateur radio operators, it helps ensure optimal antenna performance and safe transmitter operation.\u003c\/p\u003e\n\u003cp data-start=\"496\" data-end=\"731\"\u003eThis meter features a cross-needle design, allowing simultaneous readings of SWR and power without the need for calibration adjustments. With power ranges of 30W and 300W, it accommodates both low-power and high-power VHF applications.\u003c\/p\u003e\n\u003cp data-start=\"733\" data-end=\"916\"\u003eBuilt with a durable, compact enclosure, the MFJ-812B is suitable for both base station and portable use. Standard SO-239 connectors provide easy integration into most coaxial setups.\u003c\/p\u003e\n\u003cp data-start=\"918\" data-end=\"935\"\u003e\u003cstrong data-start=\"918\" data-end=\"935\"\u003eKey Features:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul data-start=\"936\" data-end=\"1210\"\u003e\n\u003cli data-section-id=\"xap7r1\" data-start=\"936\" data-end=\"972\"\u003eFrequency range: 144–220 MHz (VHF)\u003c\/li\u003e\n\u003cli data-section-id=\"18h63m8\" data-start=\"973\" data-end=\"1028\"\u003eCross-needle meter for instant SWR and power readings\u003c\/li\u003e\n\u003cli data-section-id=\"rukz32\" data-start=\"1029\" data-end=\"1055\"\u003ePower ranges: 30W \/ 300W\u003c\/li\u003e\n\u003cli data-section-id=\"1bjsroi\" data-start=\"1056\" data-end=\"1094\"\u003eMeasures forward and reflected power\u003c\/li\u003e\n\u003cli data-section-id=\"k9q3pi\" data-start=\"1095\" data-end=\"1137\"\u003eNo calibration required for SWR readings\u003c\/li\u003e\n\u003cli data-section-id=\"tm6247\" data-start=\"1138\" data-end=\"1162\"\u003eCompact, rugged design\u003c\/li\u003e\n\u003cli data-section-id=\"i93cyx\" data-start=\"1163\" data-end=\"1210\"\u003eSO-239 connectors for universal compatibility\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"1212\" data-end=\"1361\"\u003e\u003cstrong data-start=\"1212\" data-end=\"1229\"\u003eApplications:\u003c\/strong\u003e\u003cbr\u003ePerfect for tuning antennas, checking transmission line efficiency, and monitoring transmitter output in VHF amateur radio systems.\u003c\/p\u003e","brand":"MFJ","offers":[{"title":"Default Title","offer_id":52947946701097,"sku":"mfj144-220","price":51.25,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0887\/2670\/0329\/files\/MFJ_VHF_144-220MHz_Swr_Wattmeter.jpg?v=1775653291"},{"product_id":"mfj-383-amplified-speaker","title":"MFJ-383 Amplified Speaker (Pre-Owned)","description":"\u003cp\u003eThe MFJ-383 amplified speaker enhances audio clarity and volume for radio communication systems. Ideal for CB and ham radio setups, it delivers clear, amplified sound for improved listening in noisy environments.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eAmplified external speaker\u003c\/li\u003e\n\u003cli\u003eImproves audio clarity and volume\u003c\/li\u003e\n\u003cli\u003eCompatible with CB and ham radios\u003c\/li\u003e\n\u003cli\u003eCompact and durable design\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"MFJ","offers":[{"title":"Default Title","offer_id":52948112441641,"sku":"RoHs-383","price":41.8,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0887\/2670\/0329\/files\/MFJ-383_Amplified_Speaker.jpg?v=1775654262"},{"product_id":"mfj-1275-sound-card-radio-interface","title":"MFJ-1275 Sound Card Radio Interface (Pre-Owned)","description":"\u003cp data-start=\"0\" data-end=\"39\"\u003e\u003cstrong data-start=\"0\" data-end=\"39\"\u003eMFJ-1275 Sound Card Radio Interface\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp data-start=\"41\" data-end=\"300\"\u003eThe MFJ-1275 is a versatile sound card radio interface designed to connect your transceiver to a computer for digital mode operation. Ideal for amateur radio operators, it enables seamless use of popular digital modes such as PSK31, FT8, RTTY, SSTV, and more.\u003c\/p\u003e\n\u003cp data-start=\"302\" data-end=\"620\"\u003eThis plug-and-play interface links your radio’s audio and control signals directly to your computer’s sound card, eliminating the need for complicated wiring or modifications. Built-in audio isolation transformers help reduce noise and prevent ground loops, ensuring clean signal transmission and reliable performance.\u003c\/p\u003e\n\u003cp data-start=\"622\" data-end=\"871\"\u003eThe MFJ-1275 also includes a front-panel transmit level control and LED indicators for monitoring audio and transmit activity. Multiple radio interface cables are supported (sold separately), allowing compatibility with a wide range of transceivers.\u003c\/p\u003e\n\u003cp data-start=\"873\" data-end=\"890\"\u003e\u003cstrong data-start=\"873\" data-end=\"890\"\u003eKey Features:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul data-start=\"891\" data-end=\"1280\"\u003e\n\u003cli data-section-id=\"pkr33z\" data-start=\"891\" data-end=\"946\"\u003eConnects radio to computer for digital mode operation\u003c\/li\u003e\n\u003cli data-section-id=\"1b1qhjs\" data-start=\"947\" data-end=\"1001\"\u003eSupports modes like FT8, PSK31, RTTY, SSTV, and more\u003c\/li\u003e\n\u003cli data-section-id=\"oec006\" data-start=\"1002\" data-end=\"1063\"\u003eUses your computer’s sound card for modulation\/demodulation\u003c\/li\u003e\n\u003cli data-section-id=\"1qlw3fs\" data-start=\"1064\" data-end=\"1114\"\u003eBuilt-in audio isolation to reduce noise and hum\u003c\/li\u003e\n\u003cli data-section-id=\"1ahpg0i\" data-start=\"1115\" data-end=\"1156\"\u003eAdjustable transmit audio level control\u003c\/li\u003e\n\u003cli data-section-id=\"7xtspz\" data-start=\"1157\" data-end=\"1204\"\u003eLED indicators for signal and transmit status\u003c\/li\u003e\n\u003cli data-section-id=\"44budu\" data-start=\"1205\" data-end=\"1280\"\u003eCompatible with most HF\/VHF\/UHF transceivers (requires appropriate cable)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"1282\" data-end=\"1415\"\u003e\u003cstrong data-start=\"1282\" data-end=\"1299\"\u003eApplications:\u003c\/strong\u003e\u003cbr\u003ePerfect for amateur radio digital communications, contesting, and experimenting with modern sound card-based modes.\u003c\/p\u003e","brand":"MFJ","offers":[{"title":"Default Title","offer_id":52948188528937,"sku":"mfj1275-12","price":49.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0887\/2670\/0329\/files\/MFJ_1275_Sound_Card_Radio_Interface.jpg?v=1775656747"},{"product_id":"mfj-464-cw-keyer-reader","title":"MFJ-464 CW Keyer\/Reader (Pre-Owned)","description":"\u003cp\u003eThe MFJ-464 CW Keyer\/Reader is a versatile Morse code device that can both send and decode CW signals. Ideal for amateur radio operators, it features built-in keyer functions and a display for real-time decoding.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eCW keyer and reader\u003c\/li\u003e\n\u003cli\u003eDecodes Morse code signals\u003c\/li\u003e\n\u003cli\u003eBuilt-in keyer functions\u003c\/li\u003e\n\u003cli\u003eIdeal for ham radio operation\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"MFJ","offers":[{"title":"Default Title","offer_id":52981649375529,"sku":"MFJ-464","price":269.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0887\/2670\/0329\/files\/MFJ_CW_Keyer_Reader.jpg?v=1776093798"},{"product_id":"mfj-1701-antenna-selector","title":"MFJ Antenna Selector Model MFJ-1701 (Pre-Owned)","description":"\u003cdiv class=\"qMYqUG_convSearchResultHighlightRoot\"\u003e\n\u003cdiv class=\"relative w-full overflow-visible\"\u003e\n\u003csection data-turn=\"assistant\" data-scroll-anchor=\"false\" data-testid=\"conversation-turn-2\" data-turn-id-container=\"request-WEB:c17d0698-ffdd-4656-bb15-9d1b31b9b545-0\" data-turn-id=\"request-WEB:c17d0698-ffdd-4656-bb15-9d1b31b9b545-0\" dir=\"auto\" class=\"text-token-text-primary w-full focus:outline-none [--shadow-height:45px] has-data-writing-block:pointer-events-none has-data-writing-block:-mt-(--shadow-height) has-data-writing-block:pt-(--shadow-height) [\u0026amp;:has([data-writing-block])\u0026gt;*]:pointer-events-auto [content-visibility:auto] supports-[content-visibility:auto]:[contain-intrinsic-size:auto_100lvh] R6Vx5W_threadScrollVars scroll-mb-[calc(var(--scroll-root-safe-area-inset-bottom,0px)+var(--thread-response-height))] scroll-mt-[calc(var(--header-height)+min(200px,max(70px,20svh)))]\"\u003e\n\u003cdiv class=\"text-base my-auto mx-auto pb-10 [--thread-content-margin:var(--thread-content-margin-xs,calc(var(--spacing)*4))] @w-sm\/main:[--thread-content-margin:var(--thread-content-margin-sm,calc(var(--spacing)*6))] @w-lg\/main:[--thread-content-margin:var(--thread-content-margin-lg,calc(var(--spacing)*16))] px-(--thread-content-margin)\"\u003e\n\u003cdiv class=\"[--thread-content-max-width:40rem] @w-lg\/main:[--thread-content-max-width:48rem] mx-auto max-w-(--thread-content-max-width) flex-1 group\/turn-messages focus-visible:outline-hidden relative flex w-full min-w-0 flex-col agent-turn\"\u003e\n\u003cdiv class=\"flex max-w-full flex-col gap-4 grow\"\u003e\n\u003cdiv data-turn-start-message=\"true\" class=\"min-h-8 text-message relative flex w-full flex-col items-end gap-2 text-start break-words whitespace-normal outline-none keyboard-focused:focus-ring [.text-message+\u0026amp;]:mt-1\" data-message-model-slug=\"gpt-5-5\" dir=\"auto\" data-message-id=\"24273401-f2fe-496a-83a7-2189617b2245\" data-message-author-role=\"assistant\" tabindex=\"0\"\u003e\n\u003cdiv class=\"flex w-full flex-col gap-1 empty:hidden\"\u003e\n\u003cdiv class=\"markdown prose dark:prose-invert wrap-break-word w-full dark markdown-new-styling\"\u003e\n\u003ch2 data-end=\"38\" data-start=\"0\" data-section-id=\"mh8wsq\"\u003eMFJ Antenna Selector Model MFJ-1701\u003c\/h2\u003e\n\u003cp data-end=\"497\" data-start=\"40\"\u003eThe \u003cstrong data-end=\"73\" data-start=\"44\"\u003eMFJ-1701 Antenna Selector\u003c\/strong\u003e is a rugged 6-position coaxial antenna switch designed for amateur radio operators who need quick and convenient switching between multiple antennas or radios without disconnecting coax cables. Ideal for HF operation, the MFJ-1701 supports frequencies from \u003cstrong data-end=\"348\" data-start=\"331\"\u003e1.8 to 30 MHz\u003c\/strong\u003e and handles up to \u003cstrong data-end=\"403\" data-start=\"367\"\u003e2,000 watts PEP \/ 1,000 watts CW\u003c\/strong\u003e, making it suitable for both home and contest stations. \u003cspan data-state=\"closed\" class=\"\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3 data-end=\"515\" data-start=\"499\" data-section-id=\"1iz91iu\"\u003eKey Features\u003c\/h3\u003e\n\u003cul data-end=\"896\" data-start=\"516\"\u003e\n\u003cli data-end=\"590\" data-start=\"516\" data-section-id=\"11r4yxn\"\u003eSelect between \u003cstrong data-end=\"559\" data-start=\"533\"\u003e6 antennas and 1 radio\u003c\/strong\u003e, or \u003cstrong data-end=\"590\" data-start=\"564\"\u003e6 radios and 1 antenna\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"628\" data-start=\"591\" data-section-id=\"l1p1nt\"\u003eOperates with \u003cstrong data-end=\"628\" data-start=\"607\"\u003e50–75 ohm systems\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"685\" data-start=\"629\" data-section-id=\"52djm7\"\u003eHeavy-duty rotary switch design for reliable operation\u003c\/li\u003e\n\u003cli data-end=\"736\" data-start=\"686\" data-section-id=\"v4en4d\"\u003e\n\u003cstrong data-end=\"714\" data-start=\"688\"\u003eSO-239 coax connectors\u003c\/strong\u003e for easy installation\u003c\/li\u003e\n\u003cli data-end=\"832\" data-start=\"737\" data-section-id=\"uxntg9\"\u003eAll unused ports are automatically grounded for improved static, RF, and lightning protection\u003c\/li\u003e\n\u003cli data-end=\"896\" data-start=\"833\" data-section-id=\"qtuk47\"\u003eCompact black aluminum enclosure for desktop or wall mounting\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 data-end=\"922\" data-start=\"898\" data-section-id=\"ucz99x\"\u003eTypical Applications\u003c\/h3\u003e\n\u003cp data-end=\"956\" data-start=\"923\"\u003eThe MFJ-1701 is commonly used in:\u003c\/p\u003e\n\u003cul data-end=\"1103\" data-start=\"957\"\u003e\n\u003cli data-end=\"984\" data-start=\"957\" data-section-id=\"r5udhh\"\u003eAmateur radio HF stations\u003c\/li\u003e\n\u003cli data-end=\"1007\" data-start=\"985\" data-section-id=\"1j5d7hj\"\u003eMulti-antenna setups\u003c\/li\u003e\n\u003cli data-end=\"1026\" data-start=\"1008\" data-section-id=\"1p3ttdh\"\u003eContest stations\u003c\/li\u003e\n\u003cli data-end=\"1057\" data-start=\"1027\" data-section-id=\"fpllnr\"\u003eAntenna testing environments\u003c\/li\u003e\n\u003cli data-end=\"1103\" data-start=\"1058\" data-section-id=\"r626dc\"\u003eSwitching between transceivers or receivers\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 data-end=\"1123\" data-start=\"1105\" data-section-id=\"1yl5694\"\u003eSpecifications\u003c\/h3\u003e\n\u003cul data-end=\"1362\" data-start=\"1124\"\u003e\n\u003cli data-end=\"1159\" data-start=\"1124\" data-section-id=\"1fs4q7d\"\u003eFrequency Range: \u003cstrong data-end=\"1159\" data-start=\"1143\"\u003eDC to 30 MHz\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"1200\" data-start=\"1160\" data-section-id=\"esmx4v\"\u003ePower Handling: \u003cstrong data-end=\"1200\" data-start=\"1178\"\u003e2 kW PEP \/ 1 kW CW\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"1229\" data-start=\"1201\" data-section-id=\"1ui8i68\"\u003eConnector Type: \u003cstrong data-end=\"1229\" data-start=\"1219\"\u003eSO-239\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"1269\" data-start=\"1230\" data-section-id=\"tua06m\"\u003eInsertion Loss: Less than \u003cstrong data-end=\"1269\" data-start=\"1258\"\u003e0.20 dB\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"1310\" data-start=\"1270\" data-section-id=\"1kkrbwu\"\u003ePort Isolation: Greater than \u003cstrong data-end=\"1310\" data-start=\"1301\"\u003e60 dB\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"1362\" data-start=\"1311\" data-section-id=\"1xevtue\"\u003eDimensions: Approximately \u003cstrong data-end=\"1362\" data-start=\"1339\"\u003e10 x 3 x 1.5 inches\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-end=\"1554\" data-start=\"1364\"\u003eThe MFJ-1701 provides an economical and dependable solution for managing multiple HF antennas while protecting unused lines through automatic grounding. \u003cspan data-state=\"closed\" class=\"\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"z-0 flex min-h-[46px] justify-start\"\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003cdiv class=\"mt-3 w-full empty:hidden\"\u003e\n\u003cdiv class=\"text-center\"\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\u003cdiv class=\"contents\"\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"MFJ","offers":[{"title":"Default Title","offer_id":53151366906153,"sku":"mfj-1706","price":74.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0887\/2670\/0329\/files\/MFJ_Antenna_Selector_Model_MFJ-1701_Pre-Owned.jpg?v=1778559059"}],"url":"https:\/\/tekshack.com\/collections\/mfj.oembed","provider":"TekShack","version":"1.0","type":"link"}