Page 24 of HAM Radio 2009 by MFJ Enterprises, Inc.

safeguard expensive gear from static electricity and lightning surges mfj lightning surge protectors handle 400 watts pep or 1500 watts pep mfj-270 95 charge tube that safely shunts up to 5000 mfj-272 1.5kwatts 95 amps of peak impulse current harmlessly to an independent ground swr less than 1.1:1 ship code a less than 0.1 db loss use up to 1000 mhz ship code a safeguard mfj-270 handles 400 w pep mfj-272 mfj-272 your expenhandles 1.5 kw pep mfj-270 and mfj-272 $39.95 sive equipdo not protect against a direct lightning hit so-239ment from mfj-272mf so-239 pictured static electric mfj-270 $29.95 so-239 to so-239 mfj-272n $44.95 n ity and lightning induced surges on 50 ohm mfj-270mf $34.95 so-239 to pl-259 connectors coaxial line mfj-270n $34.95 low-loss n-connectors mfj-272mf $44.95 so-239 to pl-259 mfj s guardian angeltm lightning mfj-97 $9.95 replacement gas discharge mfj-97h $19.95 replacement gas surge protectors has an ultra-fast gas distube for mfj-270 discharge tube for mfj-272 400watts 29 39 low pass tvi filter handles full legal power reduce harmonics avoid tvi with mfj filters ham radio nine chebyshev poles mfj s exclusive teflondielectric technologytm capacitors hi-q inductors ground plane shielding and an rf tight cabinet give you excellent tvi and rfi protection these exclusive teflon dielectric technologytm capacitors give you extremely low loss and eliminate voltage breakdown and capacitor heating even at full 1500 watts with a 2:1 swr load handles full legal power from 1.8-30 mhz swr below 1.3 to 30 mhz into 50 ohms attenuates above 40 mhz measures a compact 3x3x9 inches handy mounting tabs ing below 30 mhz suppresses harmonics appearing in the tv bands additional attenuation to tv if frequencies above 40 mhz low loss to 30 mhz 9-pole inverse chebyshev specifications passband 0-30 mhz cutoff freq 35 mhz attenuation 52.25 mhz channel 2 video -60 db worst case at 65 mhz -60 db power capacity 2500 w key down mfj-702b 95 ship code a 200w low pass tvi filter 59 ship code a mfj-704 suppresses tvi rfi telephone and other interference by reducing unwanted harmonics going to your antenna at the same time your hf signal passes on through with low loss so you can snag that rare and exciting dx if your harmonics are causing tvi problems an mfj-704 can keep your neighbors happy while you have fun with mfj-705 95 ship code b mfj-704 95 49 mfj 2500 watts low pass tvi filter be a good neighbor plug this low pass tvi filter be-tween your transmitter and antenna or tuner and reduce your transmitter harmonics by 50 db harmonics could be the source of interference to your neighbor s tv radio vcr telephone etc swr is below 1.5 to 30 mhz into 50 ohms perfect for barefoot transceivers handles 200 watts with less than 0.5 db insertion loss attenuation is 50 db at 54 mhz so239 connectors 3x2x1.5 inches mfj-705 frequency response attenuation db 139 suppress tv interference at the source with the mfj-705 low pass filter use between transmitter and antenna or tuner reduces tv interference tvi radiated by transmitters operatmfj-701 set of 4 95 ship code a mfj rfi free choke kit for rfi suppression 50 duty impedance 52 ohms insertion loss 0.25 db 30 mhz size 91/2wx 21/4hx41/4d inches 0 10 20 30 40 50 60 0 10 20 30 40 50 60 70 80 24 it s easy to eliminate common rfi problems simply wind the offending cable around mfj s rfi suppressing toroid to get rid of rfi four square ferrite toroids are formulated espe these rfi snap-on chokes are selected for rfi suppression install on dc power line to keep ignition noise from your mobile rig and amplifier remove rf on cables and wires to your radio station isolate rfi on feedline from your station two-piece design snap and lock securely around your cable install end to end along rigid cable or loop multiple turns with smaller soft cable select from four sizes .25 id to .75 id hole size typical cable use model price each model price 4-pk mfj-700a $2.75 mfj-700b $3.50 mfj-700c $4.95 mfj-700d $5.95 mfj-700p9 $32.95 mfj-700a4 $10.95 mfj-700b4 $13.95 mfj-700c4 $18.95 mfj-700d4 $22.95 combination pack of 9 .275 inches diameter .402 inches diameter .528 inches diameter .750 inches diameter consists of 4-a 2-b 2-c rg58/59/6u/8x rg213/6x rg11/8u lmr600 and 1-d rfi chokes ferrite rfi suppression chokes mfj-711b $29.95 mfj s shieldbreakertm high pass filter mfj-711b effectively suppresses annoying 95 tvi wipe out tvi caused by 2way broadcast commercial amat ship code a eur and cb radios operating below 30 mhz cially for eliminating rfi from 0.5 to 200 mhz wind on all kinds of cable computer use between cable/antenna and tv/vcr 75 ohm cable.type f male/female connectors ribbon tv coax power telephone etc high pass filter for tv sets frequency mhz 29 ferrite rfi suppression chokes 24 www.mfjenterprises.com · toll-free 1-800-647-1800

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