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If you h ave n't
a lready rece ived
a copy o f o u r NEW
1971 Catalog of Precision
Q u a rtz Cry stals & El ectronics
for t he Commu n ic ation s I nd u st r y .
SEND FOR Y OUR COPY TODAY!
SENTRY
Somewhere alo ng the line , in virtu
ally eve ry ham re peater in t he
world. you' ll fi nd a coupl e of Sentry
crystals.
Repeater o wne rs a nd FM " o ldti
me rs" don't take ch an ces w ith
treq uencv -cthev can't afford to. A
lo t o f repeater users d epend o n a
rece iver to be on frequen cy . ro ck
stable...in the dead of w int er o r the
midd le of J uly. T he repea te r crowd
too k a tip f rom the commercia l
"pros " a lo ng t ime ago -and went
the Sent ry Rou te.
T hat 's one of t he reasons you can
depend o n yo ur local repeater to be
t here I pr eci sely the re) wh en you're
ready to use it. FM'ers use the
repeater output as a freq uency stand
ard. And fo r ac cu racy. crys t a ls by
S entry are TH E sta ndard.
IF YOU WANT T HE BEST,
SPEC~FV SENTRV CRYSTALS.
"Ask the Hams and Pros
Who Build Repeaters!"
SENTRY MANUFACTURING COMPANY
Crystal Park, Chickasha, Oklahoma 73018
PHONE: (4D5) 224-678D
TVVX-9 10-830-8425