During transmission, RF heating of the inner and outer connectors causes differential expansion between them. With standard rigid transmission line, this expansion is compensated for with sliding metal bullets. Eventually this produces wear, hot spots—and burnout. Experienced broadcast consultants recommend replacing these bullets every seven years to avoid sudden failure.
All expansion of the ERI, patented, MACXLine® inner connector is taken up with a flexible, built-in bellows; once put into service. Burnout and bullet replacement are eliminated. This advantage comes with no VSWR penalty or significant cost premium.
MACXLine® is manufactured by ERI from high conductivity copper tubing, outer conductors. Extra strength, custom PTFE dielectric disk insulators maintain precise mechanical alignment. Each section comes complete with a bullet/bellows assembly, stainless steel flange hardware and pressure sealing gasket. All are available in standard channel lengths and field cut kits— and for 6-1/8˝ and larger sizes, broadband OPTILine™ versions for multi-channel DTV/analog broadcast applications is an option. WIDELine™ offers full UHF bandwidth, without prohibited channels, plus VHF capability for individual channels. Contact ERI with details of your application for an estimate.
ERI also supplies Inners Only™ replacement sections, allowing you to retrofit your old rigid line system (in most cases) with MACXLine® inner conductors. MACXLine® inners install quickly because they are similar to pre-existing inners. This allows retrofitting to be done in stages during night-time off air intervals.
MACXLine® MACX875B Series 8 3/16 inch 75 Ohm Rigid Coaxial Line with Bellows Brochure > Download File
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(Type: Brochure; Publication Number: 20090318016_AEN; Language Code: EN; Revision: 01)
Rigid Line Components and Accessories Rigid Coaxial Line System Components and Installation Accessories Brochure > Download File
(Type: Brochure; Publication Number: 20090318017_AEN; Language Code: EN; Revision: 01)
8-3/16-inch, 75 ohm 20 foot MACXLine section flanged both ends, supplied with bellows, captivated inner connector, and flange hardware kit.
8-3/16-inch, 75 ohm 19.75 foot MACXLine section flanged both ends, supplied with bellows, captivated inner connector, and flange hardware kit.
8-3/16-inch, 75 ohm 19.5 foot MACXLine section flanged both ends, supplied with bellows, captivated inner connector, and flange hardware kit.
8-3/16-inch, 75 ohm 19 foot MACXLine section flanged both ends, supplied with bellows, captivated inner connector, and flange hardware kit.
8-3/16-inch, 75 ohm MACXLine field cut for sections between 5-feet and 20-feet supplied with bellows, captivated inner connector, fixed field flange kit, and flange hardware kit.
8-3/16-inch, 75 ohm MACXLine field cut for sections up to 5-feet supplied with captivated inner connector, fixed field flange kit, and flange hardware kit.
8-3/16-inch, 75 ohm customer specified length, from 120-inches to 240-inches, MACXLine section flanged both ends, supplied with bellows, captivated inner connector, and flange hardware kit. *Specify flange to flange length of outer conductor in inches (two decimal places)
8-3/16-inch, 75 ohm customer specified length, from 60-inches to 120-inches, MACXLine section flanged both ends, supplied with bellows, captivated inner connector, and flange hardware kit. *Specify flange to flange length of outer conductor in inches (two decimal places)
8-3/16-inch, 75 ohm customer specified length, up to 60-inches, MACXLine section flanged both ends, supplied with inner connector, and flange hardware kit. *Specify flange to flange length of outer conductor in inches (two decimal places)
Reducer, 75 ohm, 8-3/16-inch to 6-1/8-inch, includes 6-1/8-inch inner connector and flange hardware kit.
Reducer, 75 ohm, 8-3/16-inch to 7-3/16-inch, includes 7-3/16-inch inner connector and flange hardware kit.
8-3/16-inch, 75 ohm, male-to-male adapter, no inner connectors, includes hardware kit, 8-inch length.
8-3/16-inch, 75 ohm, 90 degree elbow, captivated inner conductor, includes inner connector, “O” ring, silicone grease, and flange hardware kit. *Specify television channel, FM, or frequency range.
8-3/16-inch end cap to seal line.
8-3/16-inch soft solder swivel field flange for interior runs, includes soft solder swivel flange and sleeve with fixed ring. Order flange hardware kit and inner connector separately.
8-3/16-inch silver solder swivel flange, includes silver solder, flux, sliding ring, and fixed ring. Order flange hardware kit and inner connector separately.
8-3/16-inch silver solder fixed field flange, includes silver solder and flux. Order flange hardware kit and inner connector separately.
8-3/16-inch, 75 ohm, UHF fine matcher, flanged both ends. Includes one inner connector and flange hardware kit. 18-inches flange to flange. 7 tuners.
8-3/16-inch, 75 ohm, fine matcher field retrofit kit, includes four tuners for installation in customer supplied line section.
8-3/16-inch, 75 ohm, gas barrier, both sides have a pressure port, fixed male inner connectors both ends.
8-3/16-inch, 75 ohm, 19 foot inner conductor, supplied with bellows, captivated inner connector, and flange hardware kit.
8-3/16-inch, 75 ohm, 19.5 foot inner conductor, supplied with bellows, captivated inner connector, and flange hardware kit.
8-3/16-inch, 75 ohm, 19.75 foot inner conductor, supplied with bellows, captivated inner connector, and flange hardware kit.
8-3/16-inch, 75 ohm, 20 foot inner conductor, supplied with bellows, captivated inner connector, and flange hardware kit.
8-3/16-inch, 75 ohm, field cut inner conductor, for sections between 5-feet and 20-feet supplied with bellows, captivated inner connector, and flange hardware kit.
8-3/16-inch, 75 ohm, field cut inner conductor, for sections of 5-feet or less supplied with captivated inner connector, and flange hardware kit.
8-3/16-inch, 75 ohm, inner conductor, customer specified length, from 120-inches to 240-inches, supplied with bellows, captivated inner connector, and flange hardware kit. *Specify flange to flange length of outer conductor in inches (two decimal places):
8-3/16-inch, 75 ohm standard inner connector.
8-3/16-inch, 75 ohm captivated inner connector.
8-3/16-inch O-ring gasket.
8-3/16-inch Wall Feed Thru, includes split mounting plate. Uses 3/8-inch mounting hardware (not supplied).
8-3/16-inch Hardware Kit, includes O-ring, silicone lubricant, nuts, bolts, and lock washers for one flange joint.
8-3/16-inch, single, Horizontal Suspension Hanger, 3 point attachment. Accommodates vertical and longitudinal movement in the horizontal run caused by differential expansion and contraction of the vertical run. Use at 10 foot intervals.
8-3/16-inch Rigid Horizontal Hanger, 2 point attachment. Restricts lateral and vertical movement while permitting longitudinal movement due to thermal expansion. Use at 10 foot intervals.
8-3/16 inch, Rigid Horizontal Hanger, 1 point attachment. Restricts lateral and vertical movement while permitting longitudinal movement due to thermal expansion. Use at 10 foot intervals. Has no lateral restraint: order RLA800-14 separately.
8-3/16-inch, single, Horizontal Spring Hanger, 1 point attachment. Accommodates vertical movement in the horizontal run caused by differential expansion and contraction of the vertical run. Use at 10 foot intervals. Has no lateral restraint: order RLA800-14 separately.
8-3/16-inch horizontal slip hanger for indoor use, stud mounted.
8-3/16-inch Lateral Brace, use near bottom of vertical run to restrict lateral motion of line while permitting vertical and horizontal movement. Mount: Attach through single 7/16-inch diameter hole
Replacement button kit for RLA300-11H, RLA400-11H, RLA600-11H, RLA700-11H, and RLA800-11H. Includes ten (10) replacement buttons per kit.
8-3/16-inch Rigid Hanger, use one for up to 1000 feet of line and one for each additional 1000 feet of line. Mounting hardware included: 5/8-inch diameter hardware for mounting to 11/16-inch diameter holes.
MACXLine Installation Tool Kit. Contains all unique tools necessary to assemble MACXLine transmission line systems.
8-3/16 hinged Vertical Spring Hanger, supports the transmission line, prevents lateral motion, and accommodates differential expansion and contraction. Use at 10 foot intervals. Hinged to open from left or right side to save installation labor. Includes
All designs, specifications, and availabilities of products and services presented in this publication are subject to change without notice.