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2 . 4 M I C R O P H O N E
Attach the microphone connector to a suitable micro-
phone, as shown in Figure 2-1 . Be sure the microphone
PTT switch is separate from the microphone circuit, as
shown. lt should be noted that a microphone with a 3P
plug using a common ground terminal should not be used.
The microphone input is designed for 50OO - 50kO mi-
crophones. The choice of microphone is important for
good speech quality, and should be given serious considera-
tion. The crystal lattice filter in the transceiver provides all
the restriction necessary on audio response, and further
restriction in the microphone is not required. lt is more im-
portant to have a microphone with a smooth, flat response
throughout the speech range.
Follow the microohone manufacturer's instructions for
connecting the microphone cable to the plug. With many
microphones, the push-to-talk switch must be pressed to
make microphone audio available. For VOX operation, this
unwanted feature may be eliminated, if. desired, by open-
ing the microphone case and permanently connecting the
contacts which control the microphone audio.
Standard microphone sensitivity is within the range of
- 5 0 d B t o - 6 0 d B . l f a m i c r o p h o n e h a v i n g a h i g h e r s e n -
sitivity is used, the ALC and compressor circuits will not
function properly. In this case, insert in the mike line an at-
t e n u a t o r a s s h o w n i n F i g . 2 - 1 c . A t y p i c a l M I C g a i n c o n t r o l
setting is 1 2 o'clock. lf you must run this control at I o'-
clock or less, use an attenuator.
2 . 5 K E Y
lf CW operation is desired, connect a key to the KEY jack.
U s e s h i e l d e d c a b l e , a n d a s t a n d a r d ( m o n o o r 2 P ) p h o n e
p l u g .
2 . 6 E X T E R N A L S P E A K E R A N D
H E A D P H O N E S
Receive audio output from the TS-530 is 1.5 watts at 4 to
16 ohms. The TS-530 has a built-in speaker jack on the
rear panel. The speaker may be an 8-ohm permanent-
magnet type, 4 inches or'larger. The internal speaker is
disconnected when an external speaker is used. Head-
phones should also be 4 to
'l
6 ohms impedance or
greater. When headphones are connected to the front-
panel PHONES jack, the speaker is disabled.
2 . 7 G R O U N D
To orevent electric shock, and reduce the possibility of TVI
and BCl, connect the transceiver to a good earth ground
through as short and heavy a lead as possible.
2 . 8 A N T E N N A
Any of the common antenna systems designed for use on
the high frequency amateur bands may be used with the
TS-530 provided the input impgdance of the transmission
line is not outside the capability of the bi-output m3tching
network. The transmission line should be coaxial cable.
An antenna system which shows a standing wave ratio of
l e s s t h a n 2 : 1 w h e n u s i n g 5 O o r 7 5 o h m c o a x i a l t r a n s m i s -
sion line, or a system that results in a transmission line in-
put impedance that is essentially resistive, and between
15 and 2OO ohms will take power from the transceiver
with little difficulty. lf openwire of balanced type trans-
mission line is used with the antenna, a suitable antenna
tuner with balun is recommended between the transceiver
and the feedline. Methods of construction and operating
such tuners are described in detail in the ARRL Antenna
Handbook, and similar publications. For operation on the
1 6 0 , 7 5 a n d 4 O m e t e r b a n d s , a s i m p l e d i p o l e a n t e n n a , c u t
to resonance in the most used portion of the bands, will
perform satisfactorily. For operation of the transceiver on
the 10, 15 and 20 meter bands, the efficiency of the sta-
tion will be greatly increased if a good directional rotary
antenna is used. Remember that even the most powerful
transceiver is useless without a proper antenna.
C A U T I O N :
P r o t e c t y o u r E q u i p m e n t - U s e a L I G H T I N G A R R E S T O R .
The TRIO AL-2 is recommended.
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