Page 18 - West Virgina 811 Magazine 2019 Issue 1
P. 18

lwslanmnnaw ‘ "§"sl;;f‘
3! ll 5.3% hr‘ E“; .~ » ..: 2: as tlnst ll a nu?
Calft get a good gound? Now what? EVEN E‘-“'9
Latlzmtg o HI)’/1”5’lDVfgHl5S and pm/mllem Everyfhlllg _I/an hank lo ll; you can hank Io n /1! ml rincslf! always laclzlc like» .l says .: wlll H1 me
hank. so, w.~ne;ou..d an old lawful’ lnlm has lueu called on m/my nmes ro. help. H.» .n.5m mvalwd .5 ln..ld...g II1Ejlr5HaC/Ihrlg .leo.e.~, lml hr
pmlmbly used .l lmcc ar nnee more he Mpgnzdcri’ we luelmrlm Srrdc Bmzm to our ronlly cjsubjccl lmzllcr erperls Ho 5.»nes 0/lzrllclcs .5 Ihe
upcamlllg 821 Mrlgrlzlllcs are wnnn. am}: you, Ihulrllllylacrllor, m mud lf;.e.loe5meoo.. your queslmvl, /uslralllatfhint ondln hm: rcspalld
lo _I/our apccljlc 5l'Im1Inm.Akrlaxl/)lc"!lbclllarxfiuzllglrlrilv hclp yau gm n nght. l=ul;l.5l...
nyone who has bncn cable travel to the enel of the e..ble. It may he The jolmcd end.-, alduougli poaslbly
locatlng for any uene wlll «hm you need a dewee ohm he. even .. msulalcd, wlll l.....e 5-eune capacitance
be quick to pmnt uul a hlglmr leeoueney Lhal you typlcally u.~e 5e.o5.- .l.e ,o.n. u5.ng low rrequeney
fnw useful facts‘ that help In help you on .h.. one. Typlcal locate p|pL‘ (lemming leehmnue. doe5 not
|o lncatn 21 table or p.pe. These may heouene.e5 lend to be in (112 range of gel a good slgnal path but 5-wnehlng
.nelude; 512Hz to 32kHz. Tl.e.«e rnequenele. to -I8l)kHz elluw5 Lhc slgnal tn u5e ll.e
offer good 5.gnel to none loeele. wlmm eepeellnnee of the ,o.n. Io .u.np uvnr the
' A'“’"Y* "Y ‘° “*3 " ‘W’ "°‘1“="“>' good gmundmg .5 prr:~I:nI Hnveynu msulaled 5eeuon.
- Makc sure the l.ne l...5 good eun5.de.ed u5.ng ~omv:Ihlng .n the A Wm of Wm!“ M W have
conlmuity rangc of-I:%l)kHz for poo. gmunellng mm ‘hi M of high ‘énqumdcs ml‘
- Makn sure that both end5 am well ’“"'m°"" -I8l)kHz enn he beneficial |n many
grounded So why ~180kHz? well the .1n~'w2rl~' e..eu...5lenee5, but llkc all good Lh.ng5
.l.... at 48lJkHz Lhe 5.gnul wlll "bleed there .5 a down.sldc.Undcnt.1ndlng
' Make sure you make a good Emund off" (ht cable elue lo the elumbuceel Lhe.-e llmltatlom e..n 5nll nllow Lhe
‘°““°<"°" enpnmenee of Lhe eehle to ground. uuzr Io apprecmle (112 loener-n5 of lugl.
mm m all good g,,ggggm,,,., but Therek no need to go .nloexpl..neuon5 henueney lozalc tones. The two main
WC knnW[1‘fl‘hjC‘s not a1wa)V5 ,9 of what Lhls .5, but ~ufficc .l to say— eluwn5.de. ...e:
5unple. Take, for m~t.1nu:, the thud |1\= hIs1\fr'hvim<lut‘nC.v. tlvf gmmr U H ‘hm am my “mum “why, mm
°“38“‘“°" "'“"“= We "°”' °"‘‘’ N‘ 'l‘“”“ ““““‘ N” 'h“ M1” W‘"‘ .5 a rim e. that the ‘Hand off" ercee.
W9" 3'°“““‘°d " M"“Y “"510 “"" ““g’°““d"d ““bl“ b°““““ ‘}“ on a;sogmsult .n .. "blend an" effect
not be groundcd at the far end (o. (112   <:‘iall1::ud::~ so mumng “gm. (“mm lmdmg
heg.nn.ng fax uh... matte!) Applymg g E P mm“ h M mm m mm‘ a nun
“ 1°” ““‘1“‘“‘Y "SW1 ‘°“‘“° ‘°“'= '“ “‘:'l" "‘° ‘°“f“"°§ '“‘° '}‘.“ ’Z‘°‘;"d 1 on 011:1’ uulfiiee rc~'ultl)ng in muluple
.he.e e..euu.5.enee5 een he iru|Ik‘s~. an so romp 2'0 h= mm“ M 1° N2 . ’
Fursxampls,ahorltzlnphonedmpstua Han~mmCr»Us|ngIh€~130kHzm°dE ;;%§:;gPj;“;;;‘j;;;;:;j§*°;§;;T*;§:'
P,g,,,,.c W," Pmbably nolbg gr0undEd/ help5 detect lhe5e short, unearthed mi: Lg!’ lozdenmy [he timcmgn *
pot ended enhle. that have been cable dmP»- P
Icrmlnalcd oeeeue they am no lunge. “"5 I. M mg mg of M My as 2) Ao the signal wm "bleed off" over the
mquimd or hee..u5e Lhcy have been l...d 48DkHZ can film bc a gm‘ help m enllm length of the tabln, .l.e d.5.unee
.n anllupatlon or he.ng u.-ed hue. ...e dcmmg Old“ CM mm P|pel‘nE~ Lhc usual w-I1 tr-wcl along the table
al~u not llkely to be gmundcd. Many of mm, Pwehm Wm have o. plpe w.ll he le5. than that of .. law
_ ‘ imqucnty 5.gnul. II 5houlel he noted
1; mm Mm Emund, 0, the g,,,.,,.d,,.g lI’I~ulE|lCd]OlnIa.Tl\|aQ1LE|1'lEfll that mm law he “W V ‘mm mm
,,. Pong makmg a good gmund in.-uleuun may he a n:~ult of cnrmdlng N am; fbm Whgm Did ;mmd~_ 4m
connecnun M the gW,,m,m pm. and .o.no and nul~ and lool.5, or heeeu5e Lhe »mm . 3 g -
eheelnng fox contlnulty .5 not going ~=-llms mam-jal use-1 to loin the lnlms '’ ’
|o help .n..ue.5 ilSI1'1EXL‘|S nowhcm can mam an m~'ul-fled lcum E-ther way. Ifyuu hm qucsmma or tuvllvllmta open»
.0, me 5,3,“. .9 “ml .0 .;,1,m ,. no .l...- .5 bad new5 for 5ou.eone txymg ml. lzrtirlc u. moled ;‘u;vic5, /Udfre: to
g,w,,d fl‘ 11,2 fa! end we should M g to detect the poulinn of Lhe plpclme. eonloel Sftzlc or
dlffcmnl .eehn.que to get the signal to CRPHTWVE =Hm~'1mll> hm aim , . .
5two.lvmzttkUv).:rl!.:'tml.
16 . West no... 511 2019, .5... 1

















































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