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NOW
E
AVAILA8L
700X KILOWATT WATTMETER AND
MOD ULATION PERCENTAGE METER
• Dummy load wattmeter for 52 ohm
inpu t • Measures R.F . power in 4
ranges to 1000 watts • Measures
modul ation percentage on calibrated
scale • Portable
$124.50
at ure in 73 , QST, and HR. You are also
invit ed to join on e of th e man y slo w-scan
gro ups which meet near 142 30 kHz, Saturday
s, at 1900 GMT (1400 EST). The author
can usually be fo und by co ntac ting W4AB Y
or K6 BL/4 .
Referen ces
Cohen, T.J., An Economical Slow-Scan TV Monito
r, 73, July, 1967.
Hutt on. 1. 1., A Slow-Scan TV Pict ure Generator,
73, October, 1967.
Hutton, 1.1.. A Fast-Scan Vidicon in the Slow-Scan
TV Camera, 73, February, 1969 _
Hutt on, L.I., A Slow-Scan Television Signal Generator,
73, July, 1969.
Macdonald, C.; S.C.F.M.-An Improved System
for Slow-Scan Image Transmission, QST, January,
February, 196 1.
Macdonald, c., A Compact Slow-Sca n TV Monit or,
QST , March, 1964 .
Macdonald c., A Slow-Scan Vidicon Camera, QST,
June, Ju ly, August, 1965.
Taggart , R.E ., A Slow-Scan Patch Box, A S, May,
1968.
Taggart, R.E., Slow-Scan with Regular Vidicons,
in, Technical Correspondence, QST, December,
1968.
FEBR UARY 19 71
... W4UMF
N o Book s Yo Read
N o VII ",. I Gimmick .
To DI. ,rCICI You
J Ult 1I,ten And lear n
Baled on modern pl ychologlcol
lechn ;q uu - Thil co une wi ll 10k.
you be yQnd 13 w .p .m. In
LES S THAN HALf THE TIMEI
A vailable on m agnet ic
tap e , $9.9 5 Ca$sette . $ 10.95
. •. for th e CE'er
~:~AT "MINI MASr
Self Support ing Cran k-up Masts
H igh st r en gt h t u b in g - 6 square feet
o f ant e n na w it h adequa te m argin o f
saf ety in 5 0 m p h w in ds - e asy 2 step
inst a llation.
Available w ith the
Exclu sive new Rotor Base Accessory
In st a llation details , other m odels ,)
a nd acc e sso r ies available
TRISTAO TOWER CO.
Ball 1 15 Hanford C A 9323 0 ~ ~
29