Page 16 - Tennessee 811 Magazine 2019 Issue 3

‘ llnm_x~_ne:l.ll ll" -«''‘'''-~ 55: '1
-llll.llll..ll .. . : : :
la? 5 Elf ii ix li"xx lam ‘ x 1 ::: . flag xg uni‘
. fly Steve EEHZIS
D1s torted Locate Tones
llen we apply a loenle abavc or below thn Iargcl llne. Ii lhls "‘“‘" ‘“'“Y“
lune lo a bunnd ullllty, we ls suspected, lllen uslng llle "Extended 1. me .,.,l,w d.angmg d.,m,,,n O,
eleale an nlcctlomagnctlt deplh mchnlqus" ean help dapll,
field around lhe ullllty. y
[,5 my Md ‘hat We mm Whm WC Extended daplh lerhmquc 2. Elcclntzll eluss bonding of cabllng
ale utility Iocallng ln an ldeal world, A sllnple bul very elm,“ mmhud‘ or l>|l>n~
‘h° “SW1 '“d‘“‘“‘ "‘“ ‘mm ‘h“ ““‘“3’ Take a depth re-ldlng at ground level, 3. lnduellue and tapatluve bleed Over
tn :1 nlre P’°dlClflhh‘ way» All table lalse lhe loealol a known dl~tl1nCr3, say of lueale lune
lnratnn am adlualed and mllbmtcd m, nole lhe new depth leadlng. If llle
assunllng lhls ls (hr: ease. Huwevel, ln ,..d,m.ml dam}, ha, ha, ,,,mW.d by Clmnglng dllelllun ls llle easlesl lo deal
the real world, the nsn-ll la vnry «men lhal amuunl, llle Information should Whh Th“ “h*‘W*" '5 '° *“h° “'"<““85
ellsluneel wlllell can lead lo ~L‘rvl(Cs ha lmlcd Wm. m.,,,.m T1“, gxrnple wlmm llw unl-ty -~ not devmnng. So,
bI:|nglOCl1lQdlnl1'1I: wrung poslllon ol ,,,,3.}“,d W,“ ,dem,,y d,,.m,,Cd Md slay away lluln bends "vs" or sudden
dnvlh» even ln slluallans whim: llle peak/null C}hnnz=}‘|n dhvlh» Th° dlmnhr ‘hh "NW
s> . tiul>l"['rtdll
mm M, H “mm 0, mchnuvm um |LE}InlL‘[ue could alruggln, for lnslanee YO: nicdtixcnl Dr" R EV" lnn
can be |I~L‘d la ldenllly .l ellslaneel field W1‘““'h“"‘"‘“‘“““‘ "' °'-‘"““$ ’ ‘
[w,u¢xp1fl,,. a gm Ways, 1 am We démctly frbovln n uflllty l>unn<ll<lln‘rll>' Elnclntal eluss bonding The llesl way
mm. m 0.1.9“, bu. .1.a,,a m M cm, a we or L on 1 C Iarsnl un |t>- to deal wllh lllls ls lo lennuve llle (mm
lusel 30 ,,,,,,l_,,,i, llondlng icllylhzll ;1'1n;\l||l{lty you wnnl to
oeale can e lso ale . Cmovm enlss
PM"/N"” ’“"”"7”‘ Tl-ls ~nun<l~' cnmlnl-rated, and ls-Am bonding ls usually pussllale an lipellnes
MM mom“ mb,c,m,m,.1,m -t -an a: -I u-;~ -Er-Sr-Ly of »lx$‘ntenna~ and lelephone Cabling bulls nul usually
hoxlzunlal anlennas lhnl glvca good ‘° W 3"“ S ° ‘ “I” '" ‘“ PDNME W-lh P°“’°¥ l-new Nnvnr
Pmw “gm! ‘hm mmmm the bar dllnensluns. ll s unly avallable ln llle amps, Wm, Cabling “files, a.,ll.o,,.ad
mph mdmg when it h dmmy om uely lalesl cablc localors, such as (hr: .9 do ,0.
the nnllty They also lmvn H vnrt-cal ""°‘3 f"’"‘ V“{‘“'M“"°‘°d" “'° Blend uvel Tllls usually oeeuls wllele
anlenna that eleales a m|nlmum bar fin“ Q-°W= ';1Tl1d°;éH“ n'ks<;"°“;~ d “gm, b,m1,. mm mm M WEE,
W?“ ’“‘‘‘‘‘“S ‘“"“‘“ “V” ”‘° ““'“Y “Yes tn: ‘" ,“m M "‘ A," ullllty onto an zldjzlccm llne nus eauses
The two ale lerened lo as peak and Prmn L ml onna -on In a »*““P C a mmdm mm,“ H, flow WW}.
2"“ "“"‘=~> Th° h““ "Wdh ‘Ch? '° ml” cud“ d'”"l“"’ enllses dlslonlon. The laesl way to deal
C affmwl by drawn-on mum I an caeen bill’ gnlpll lndllallng nu/lnlnllnal W,.}, .h,. ,, by md,,c,,,g the fmqunnq.
the P:-ale w W: tong hf? nnwumgn Ll-C dlslonlon of Lhlz lueale lune as the effects of
llseo lle pca me e uratcumty ‘ ‘ 1‘ d 4 . , 1
Huwcvcl, we can use llle null mud: El-In bar graph lndlmnng some ‘"5
to help mlmmy dmmd fiddfi fig dlslolllon ~L> Imal llle lniolmallon wllll Smmdlv make mm M Pwum of M
Lh° ‘W0 10”“ P°~“'°“~ “"11 <°*hC'<"= °“““°"’ ground ls well away llunl ulllllles ln the
when ‘hm ls no <lNnm°n but will h= Red bar glapll lndltatlng exeesslve salne v|Clnlty as the slgnal wlll choose
dhplacnd m a d-stoned finl<l- Tlm mom dlslonlon so do nul llusl llle Io hllell a nde an lhe ane ncl1xL‘~'t lhe
llle peak and null loeale poslllons ale ,“,umam,,, mnh Stake‘
ellsplaeed, Lhc nlule slgnal ellslulllan
Dlsloned sl nals ale a lna al leasun L ,llv, l be thll l .- l . I
nu» la a good technique but can be [02 n...loe.fes, but if llndelsland h§Ze’a n§slaIl.'a.§}§e“e'§l§nra“l. °
fooled by aymmvlnc-ll d-smrnon» Tl-ls wlml tausci lhenl, we ean mltlgale lhell so always ck ral dlslonlon and dlg
Inn mun for lnflnntn Whm‘ ‘hm erceels ggylllldhllle qutafllvrls ur l‘DYlZlll(l1IS IIIVDMI
am Mn locale ~-sn-1|» one d-rcclly _ _ _ ml; mlele Ur yelmd Iuplfs, fool /lee m
l llelleve dlslonlon ls eaused ln lhlee ,
mtlfflrf SIEUC m‘. 5!(IlC.b('rlZtE((U I/xmI.(LIYlZ.
14 . Tennessee 511 2019, lssuz 3