Radio Shack 2100989 - Whip Element Adjustment

5
3. Loosenthecolletholdingthewhip.Usetheincludedhex
screwdrivertoturntheallenheadsetscrewatthetopof
thewhipbasecounterclockwise.
4. Adjustthewhipelementuntilitisapproximatelyhalfway
downinthewhipbase.
5. Pressthetransmitswitchandobservethemeterreading
(refertoyourSWRmeter’suser’sguideformoredetailson
usingthemeter).
6. Raisethewhipelementbyapproximately1/8”increments
toseeifthemeterreadingcanbereduced.Repeatthe
procedurestartingfromthecenterpositionandlowering
theelement.
DifferentSWRreadingsmaybefoundwhentheantennais
locatedatdifferentpoints.Determineexperimentally,by
trialanderror,justwheretheantennamustbemounted
toprovidethelowestSWRreading.Readingsbelow2are
acceptableformostinstallations.
WATT
10W FWD PWR
100W REF SWR
A
N
T
T
R
A
N
S
SWR
FS
1
2 4 6 8 10
3
1
2
2
4
6
8
1
0
SWR Meter
Allen Head
Set Screw
1/8”