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4.5 DIGITAL DISPLAY CALIBRATION
Connect the antenna and set the BAND switch to WWV.
Turn the main tuning dial to receive 10 MHz WWV. Turn
on the calibrator. Adjust the dial until a low-frequency
beat is heard. A marker signal will be superimposed on the
WWV signal. A double beat (two beat signals of high and
low frequencies) will now be heard. Adjust the lF shift for
low AF response. While receiving this double beat, adjust
the Standard oscillator trimmer through the reference fre-
quency adjustment access opening (on the bottom of the
TS-530) so the two beats are heard as a single beat. Re-
peat this procedure 2 or 3 times. This completes calibra-
tion of the Digital Display. After calibration turn of the
CAL switch.
Fig. 4-13
Digital Display Calibration
4.6 ANALOG DIAL CALIBRATION
The dial scale is graduated at 1 kHz intervals. One revolu-
tion of the main dial covers 25 kHz. To calibrate the scale,
turn ON the calibrator. Zero-beat in either SSB or CW
mode. Hold the main tuning knob from rotating and slip
the calibration ring to the nearest major (5 kHz) gradua-
tion. The dial is now calibrated.
NOTE:
For exact frequency, read the Digital Display
Fig.4-14 Analog Dial Calibration
SECTION 5. OPTIONAL ACCESSORIES
5.1 OPTIONAL ACCESSORIES
The following optional accessories are available for use
with the TS-530.
r REMOTE VFO
VFO-240:
The VFO-24O is an all solid-state VFO with high stabil-
ity, designed to match the TS-530 in design and per-
formance.
The T-F switch makes it possible to check the trans-
mit frequency while in the receiving mode.
V F O - 2 3 0 :
The VFO-23O digital VFO provides maximum effi-
ciency and flexibility for all operating conditions, in-
cluding split-frequency operation, by combining a 20
Hz step digital VFO with five memories.
r A N T E N N A T U N E R
AT-230:
The AT-23O antenna tuner includes the three new
bands and such functional features as a through-line
wattmeter. SWR meter and antenna selector switch.
AT-250:
Covers all amateur bands including the new WARC
band from 1.8 through 28 MHz.
20
r E X T E R N A L S P E A K E R
S P - 2 3 0 :
The SP-230 is a low-distortion speaker with selecta-
ble frequency response for high intelligibility in any
mode. The frequency response is determined by the
built-in audio filters, which are effective in improving
signal-to-noise ratio under certain interference condi-
tions, or when receiving weak signals.
r L I N E A R A M P L I F I E R
rL-9221922A:
The TL-922 is an HF linear amplifier operating
maximum legal power, and employing a pair
3-5OOZ high performance transmitting tubes.
r STATION MONITOR
sM-220:
Based on a wide-frequency-range oscilloscope (up to
1O MHz), the SM-220 station monitor features, in co-
mbination with a built-in two-tone generator, a wide
variety of waveform-observin g capabilities.
a t
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