{"product_id":"ax4-100-w-40-10-m-portable-antenna-field-testers-only","title":"AX4 100 W, 40-10 m Portable Antenna_Field Testers Only","description":"\u003ch2\u003eIntroduction\u003c\/h2\u003e\n\u003ch3 dir=\"ltr\"\u003e\u003cspan style=\"color: rgb(13, 68, 150);\"\u003e\u003cstrong\u003eTAKE YOUR ADVENTURES TO THE NEXT LEVEL WITH THE NEW AX4!\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eOur 4’ (1.2 m) whips are great for ultraportable outings. But when you need more punch...answer the call of the wild with the rugged AX4. Perfect for picnic table or tripod mounting in wind-swept terrain, the 8’ (2.5 m) AX4 boosts your signal as much as 6 dB.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eThe AX4 is supplied with four 13' (4 m) radials, providing an efficient, symmetrical, and no-tune counterpoise. Resonant frequencies are ~7, 10, 14, and 21 MHz. A wide-range ATU, e.g. those in all Elecraft transceivers, handles final matching. Our versatile AXTC4 table clamp (see photos) bolts directly to the whip base.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e \u003c\/p\u003e\n\u003ch2\u003eSpecs\u003c\/h2\u003e\n\u003ch3\u003e\u003cspan style=\"text-decoration: underline;\"\u003e\u003cstrong\u003eSpecs\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h3\u003e\n\u003ctable width=\"545\" height=\"29\" style=\"width: 89.1045%;\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 16.6334%; text-align: left;\"\u003e\u003cbr\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 74.6474%; text-align: left;\"\u003e\n\u003cp dir=\"ltr\"\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003ch4 class=\"MsoNormal\"\u003e\u003cstrong\u003eResonant Frequencies\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cp class=\"MsoNormal\"\u003e~7 MHz (40 m), ~10 MHz (30 m), ~14 MHz (20 m), ~21 MHz (15 m). The 21 MHz band jumper setting is used for 17, 12 and 10 m.\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003eNote:\u003cspan style=\"mso-spacerun: yes;\"\u003e  \u003c\/span\u003eAn ATU is required in all cases. The ATU compensates for actual inductances, height above ground, radial length \/ deployment angle, coax length, and ground characteristics. With per-band tuned radials, ATU SWR matching range needed is typically \u0026lt; 3:1 on resonant bands and \u0026lt; 8:1 on non-resonant bands (17, 12, and 10 m). All Elecraft transceiver internal ATUs and the Elecraft T1 ATU have sufficient range.\u003c\/p\u003e\n\u003ch4 class=\"MsoNormal\"\u003e\u003cstrong\u003eRadial Wires\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cp class=\"MsoNormal\"\u003eOne 16’6” (5 m) radial wire is supplied for use on 20 m. To optimize performance, attach a tuned radial for each additional band used, where L (feet) = 234 \/ F, or L (m) = 71.3 \/ F. Deploy radials above ground if this can be done without creating a tripping hazard. All radials must be attached to the AX4’s ground, not the transceiver’s. Connect the BL3 directly to the AX4, and run coax from the AX4 to the transceiver.\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003eNote: Tuned radials are required above 20 W to minimize RFI and balun heating.\u003c\/p\u003e\n\u003ch4 class=\"MsoNormal\"\u003e\u003cstrong\u003eMax. Power\u003cspan style=\"mso-spacerun: yes;\"\u003e  \u003c\/span\u003e\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cp class=\"MsoNormal\"\u003e100 W CW\/SSB, 50 W data\/AM\/FM. If RFI symptoms are observed at the transceiver or at an attached computer, reduce power, increase coax length, or use a high-isolation balun, e.g. an Elecraft BL3. The BL3 is optimized for high isolation on all AX4 bands. If SWR increases during transmit, reduce power to avoid excessive balun heating.\u003c\/p\u003e\n\u003ch4 class=\"MsoNormal\"\u003eConstruction\u003c\/h4\u003e\n\u003cp class=\"MsoNormal\"\u003eCorrosion-resistant whip and hardware; nylon base unit with acrylic toroid cover; high-Q inductors (T94-6) wound with high-temp enamel wire.\u003c\/p\u003e\n\u003ch4 class=\"MsoNormal\"\u003e\u003cstrong\u003eDimensions\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cp class=\"MsoNormal\"\u003eWhip: 13.3” (34 cm) collapsed, 8’ 2” (2.5 m) extended. Base: 7.5” (19 cm) long. AXTC4 table clamp: 5.8” (15 cm) long; max table thickness, 3” (7.5 cm). BL3 balun, 4” L x 2” W x 1.3” H (10 x 5 x 3.3 cm).\u003c\/p\u003e\n\u003ch4 class=\"MsoNormal\"\u003e\u003cstrong\u003eWeight\u003cspan style=\"mso-spacerun: yes;\"\u003e      \u003c\/span\u003e\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cp class=\"MsoNormal\"\u003eAX4 base unit, 8.8 oz. (250 g); whip: 3.8 oz. (108 g); AXTC4 table bracket, 3.6 oz. (100 g); BL3 balun, 4.0 oz. (113 g).\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e \u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd style=\"width: 7.911%; text-align: left;\"\u003e \u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003ch2\u003eAccessories\u003c\/h2\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003e\u003cspan style=\"text-decoration: underline;\"\u003e\u003cstrong\u003eAccessories\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h3\u003e\n\u003cblockquote\u003e\n\u003cp\u003eThe new BL3 Balun is not yet available for purchase. Following its introduction at \u003cspan class=\"hover:entity-accent entity-underline inline cursor-pointer align-baseline\"\u003e\u003cspan class=\"whitespace-normal\"\u003eDayton Hamvention\u003c\/span\u003e\u003c\/span\u003e, we are now beginning the process of sourcing materials and preparing for production and assembly. We appreciate your patience and will announce availability as soon as the BL3 is ready to order.\u003cspan style=\"text-decoration: underline;\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli style=\"text-align: left;\"\u003e\u003cspan style=\"text-decoration: underline;\"\u003e\u003ca href=\"https:\/\/elecraft.com%20%E2%80%BA%20products%20%E2%80%BA%20bl3_bl3-balun\" title=\"BL3 Balun\" rel=\"noopener\" target=\"_blank\"\u003eBL3 Balun\u003c\/a\u003e\u003ca href=\"https:\/\/elecraft.egnyte.com\/dl\/p4fyGdKmcVhJ\/BL3_brochure%2C_rev_A1.docx_\" title=\"BL3 Balun\" rel=\"noopener\" target=\"_blank\"\u003e\u003c\/a\u003e\u003ca href=\"https:\/\/elecraft.com\/products\/axc3_axc-coax-cable\" title=\"AXC3 COAX CABLE\" rel=\"noopener\" target=\"_blank\"\u003e\u003c\/a\u003e\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/blockquote\u003e\n\u003cblockquote\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch2\u003eManuals\u003c\/h2\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003e\u003cspan style=\"text-decoration: underline;\"\u003e\u003cstrong\u003eManuals \u0026amp; Downloads\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h3\u003e\n\u003cblockquote\u003e\n\u003cul\u003e\n\u003cli style=\"text-align: left;\"\u003e\n\u003cspan style=\"text-decoration: underline;\"\u003e\u003ca href=\"https:\/\/elecraft.egnyte.com\/dl\/8f9JttTQdtgQ\/AX4_brochure%2C_rev_A2.pdf_\" title=\"Elecraft AX4 100W, 40-10 M Whip\" rel=\"noopener\" target=\"_blank\"\u003eAX4 Brochure\u003c\/a\u003e\u003ca href=\"https:\/\/elecraft.com\/products\/axc3_axc-coax-cable\" title=\"AXC3 COAX CABLE\" rel=\"noopener\" target=\"_blank\"\u003e\u003c\/a\u003e\u003c\/span\u003e\u003ca href=\"https:\/\/elecraft.com\/products\/axc3_axc-coax-cable\" title=\"AXC3 COAX CABLE\"\u003e\u003cspan style=\"text-decoration: underline;\"\u003e\u003c\/span\u003e\u003c\/a\u003e\n\u003c\/li\u003e\n\u003cli style=\"text-align: left;\"\u003e\u003ca href=\"https:\/\/ftp.elecraft.com\/AX4\/Manuals%20Downloads\/AX%20Line%20Comparison%20Chart,%20AX1-AX4.pdf\"\u003e\u003cspan style=\"text-decoration: underline;\"\u003eAX4 Comparison Chart\u003c\/span\u003e\u003c\/a\u003e\u003c\/li\u003e\n\u003cli style=\"text-align: left;\"\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/2029\/4979\/files\/AX4_Specifications.pdf?v=1779492248\"\u003e\u003cspan style=\"text-decoration: underline;\"\u003eAX4 Specifications\u003c\/span\u003e\u003c\/a\u003e\u003c\/li\u003e\n\u003cli style=\"text-align: left;\"\u003e\n\u003ca href=\"https:\/\/elecraft.egnyte.com\/dl\/p4fyGdKmcVhJ\/BL3_brochure%2C_rev_A1.docx_\" title=\"Elecraft BL3 Balun\" rel=\"noopener\" target=\"_blank\"\u003e\u003cu\u003eBL3 Balun\u003c\/u\u003e\u003c\/a\u003e\u003cbr\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/blockquote\u003e\n\u003c\/blockquote\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003ci\u003eAn antenna matching device (such as an ATU) is required with the AX4 for impedance matching. Resonances in the 7, 10, and 14 MHz jumper block settings fall in or near the 40, 30, and 20 meter ham bands, though frequencies may shift due to ground characteristics, radial wire length and placement, etc. The fourth setting, 21 MHz, is for use on 15 m, as well as 17, 12, and 10 meters with a wide-range ATU. Elecraft transceivers include optional built-in ATUs that have the required range. NOTE: When using whip antennas above QRP power levels, especially on non-resonant bands, a balun may be required to keep coax shield radiation from interfering with your transceiver. The Elecraft BL3 is specifically designed to allow power of up to 100 W CW\/SSB (50 W DATA) to be used with the AX4.\u003c\/i\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cblockquote\u003e\n\u003cp\u003e\u003cmeta charset=\"UTF-8\"\u003e\u003cspan style=\"color: rgb(19, 23, 246);\"\u003e\u003cstrong\u003eThank you for your interest in the new AX4! Join our wait list and we’ll contact you as soon as your AX4 is ready to ship. We currently anticipate production beginning in July, pending material deliveries. Pricing has not yet been determined and will be announced when the AX4 is ready to ship. We appreciate your patience and support as we work to bring the AX4 to you as quickly as possible.\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/blockquote\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"Elecraft","offers":[{"title":"Default Title","offer_id":48739471622400,"sku":null,"price":0.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/2029\/4979\/files\/AX4_Antenna_Banner.png?v=1779131334","url":"https:\/\/elecraft.com\/products\/ax4-100-w-40-10-m-portable-antenna-field-testers-only","provider":"Elecraft","version":"1.0","type":"link"}