Hy-Gain 421A Installation And Operation Instruction

The Power Meter is a high
stall instrument. It will
directly on the meter without
percentage of modul ation
in 3 ranges up to 500 W.
The Power Meter was designed
convenience and as such
modern style Indicator unit can be placed
position while the Sensor,
between the transceiver
hang behind the transceiver.
run coaxial cables across
cator and Sensor units are hooked together
connection cable suppl ied.
Hei ght. ,
Wi dth
Depth ....•.•... "
Net Weight
Construction Lightweight
Total Shipping Weight..
Impedance
Connector Data
together
Power Ranges
Modulation
VSWR , . '"
Frequency Range
() Carefully remove the Indicator
the packing carton. Examine
ping damage. *See last paragraphs
() Connect the Sensor unit
antenna, being careful to connect
on the short length of coaxial
Transceiver. Connect the antenna
on the Sensor.
Assuming that the Power Meter has been installed
I ined above, proceed as follows
the antenna. Rotate the Ca librate
ORDER NO.,
421A
quality, compact, easy to in-
measure the VSWR of an antenna
an inter-pol ation
to over 100% and power output
for maximum operating
consists of two parts.
In a convenient
which is placed in the line
and the antenna, can stand or
This alleviates the need to
the operating desk. The Indi~
with the inter-
5 1/8':
, , . 1 1/2 Ibs.
aluminum chassis
rugged steel case ..
, .. , , .. 3 1/4 Ibs.
50 Ohms Input and Output
Sensor and Indicator hooked
with 4 foot cable supplied
Three power ranges from 0 to
10,100 and 500 watts
Measures percentage
modulation to over·100%
: Measures VSWR of antenna
, , ....•. 3- 60 MHz
and Sensor units
it closely for signs of ship-
in this manual.
between the Transceiver
the coaxial connector
cable to the output of the
to the SO-239 socket
as out-
to measure the VSWRof
control full y co~nter-
I NSlAlLAI'IO;N'&
o
PERAllO N INSTRUCTIONS
. H,{~GAtA
fturat
• '~",
cfockwi se, switch
key the Transceiver
unti I the meter
cal ibrated scales,
chart,
to SWR and the VSWR of theantennaca.n
from the SWRscale.
The
Before measuring
VSWR of the antenna as outl i ned abOve.
be less than 1.5 to 1 for the percentage
be correct (it will
but not accuratel y).
Set Function Switch
wise, key the Transceiver.
to full sr.al e defl ection ,swi
MOD. Talking
give a percentage
3"
distance between
7"
on words I ike "five"
not exceed 100%.
with
The Power Meter
power output
Uf)
than 1 b to 1 for thiS rneasurementto
When measuring
est range (500w)
tained, do not
Cal ibrate control
of
The Power Meter
internally and should
from DO NOT ship equipment
a uthori zation.
whi ch wi II avo id the del ay of unexpected
and If time is extremely
and we will rush labels
pected, even the time of sending
that lost when an unexpected
It is VERY IMPORTANT that the shipment
and fully insured.
you and the carrier
Proper packing
ALL SHIPMENTS MUST BE SENT TO US PREPAID.
accept collect
our standard cartons
ELECTRONics
Route l.incoln:
3
"",,"~ , ..• '
the Function ?witch
and adv(1)Ce the
reads full scal e(jus.i to the end of the
nofurther). Switch the. Function
Unkey the Transceiver.
the percentage of modulation,
indicate modulation with a higher
to FWD, Cal ibrate full
Advance the Calibrate
tch the Function'
or whistling into the microphone
of modulation on the meter.
the microphone and the mouth
the percentage of [nodulation
Unkey the Transceiver.
Will measure,'uslng.three
to'500 watts. The VSWR should
be accurate.
the pnwpr output always
and then go down until
let the meter be pinned
does not operate in the power position.
power scales are a factory
not be adjusted.
to the Manufacturer
We prefer to send spec i a I shippi ng Iabe Is
important, wire or call
to you. When a shipment
the labels
shipment is received.
Damage claims must be settled
and will greatly delay
normally avoids this trouble.
shipments. All returns should.be
only - so save your carton
CORPORATION'
4
Ne6raska·6'S5Q5: '~"
I, ,', , -\' '@~
to FWD (forward),
Cal ibrate control
Switch
.be read directly
check the
The VSWR should
of modulation to
VSWR
counter-clock-
control
Switch to
witl now
Adjust the
so that
does
ranges, the
be
less
start on the high-
reading is ob-
8
full scale. The
adjustment
without prior
shipment.
for approval
is ex-
is less than
be well packed
between
any returns.
I'Ve do not
made in
when un-