Specifications
YO-100 / YO-101 Monitor Scope Specifications:
Vertical Trace Performance
Sensitivity: 200 mV P-P/cm
Frequency Response: Direct 10Hz to 60MHz
Horizontal Trace Performance
Sensitivity: 300 mV/cm
Frequency Response: 10Hz to 16kHz
Sweep Frequency: 10 Hz to 10 kHz
Two-Tone Generator Performance
Frequency: 1500 Hz and 1900 Hz, Independently selectable
Output Level: 50 mV
Power Requirements: 100/110/117/200/220/234 VAC 50/60 Hz
Size: 6-1/2"h x
Weight: 13 lbs
YD-844 Dynamic Base Microphone
The YD-844 is an attractive and functional necessity for serious base-station operation. The unit is made of heavy
cast metal which rests solidly at your operating position. The microphone element is dynamic (voice-coil) and is
balanced (output levels and impedances) for use with the FT-101 transceiver. Two PPT (push to talk) buttons are
available on the YD-844 microphone. One button is a momentary-switch which must be depressed to activate the
PTT relay, the second button has a lock feature which allows hands-free operating (while still transmitting via PTT).
The microphone element is always connected to the FT-101 so that VOX operations are available without depressing
any microphone PTT buttons. The FT-101 transceiver has three transmit options: 1-MOX (Manually Operated
transmitter), 2-PPT (Push To Talk), and 3-VOX (Voice Operated Transmitter). These three options are available on
the front panel of the FT-101 Transceiver via toggle switch. The YD-844 is available in both high and low
impedances. The microphone cord is a 3' coiled, 4 conductor (one shielded) cable terminating into a 4-pin female
connector.
FT-101 Microphone Connection Detail
YD-844 Specifications:
Impedance: 500 Ohms at 1kHz, or 50k Ohms at 1kHz
Output: 50mV nominal
Frequency Response: 50Hz-10kHz nominal
Directivity: Uni-directional
Size: 9" x 3" x 6"
Weight: 1-3/4 lbs
QTR-24 World Clock
The QTR-24 World Clock is a 12 and 24 hour format clock. The standard clock movement (hours, minutes, seconds)
is represented in the classical 12 hour format. An outer ring depicts time in a 24 hour format. The first 12 hours are
shown in white to depict daylight and the other 12 in black. The outer-most perimeter of the clock face has the names
of the major cities throughout the world in each of the 24 global time zones. As the 24 hour ring passes a group of
cities, you can easily see their UTC time and a day/night indication. The QTR-24 has three adjustments on the rear.
One for time (basic movement adjustments), one for the 24-hour ring, and one for fine-time adjustment. The QTR-24
can be adjusted to be accurate within 60 seconds per month.
A 24 hour station clock is a must-have accessory for any operator. The current name and format for world time is
called Universal Time Coordinate (UTC). It has also been known over the past years as Greenwich Mean Time
(GMT), and the military term ZULU (Z). All world time is represented in a 24-hour format based upon the global
starting point in Greenwich, England (UK). The UTC time standard does not adjust for Daylight Savings Time in the
United States.
Accurate time reception can be found by tuning to WWV (10.000MHz) on the FT-101 transceiver. Alternate
frequencies for WWV and WWVH are 2.500, 5.000, 10.000, 15.000, and 20.000 MHz. All time formats are AM
broadcasts. CHU in Ottawa, Ontario (Canada) can be found in the 40 meter band 7.335 MHz, 3.330 MHz, and 14.670
MHz. The WWV (male voice) originates from Ft. Collins, Colorado (USA). The WWVH (female voice) originates
from Kauai, Hawaii (USA). The ultra-high accuracy of the WWV 10.000MHz signal is also used to calibrate
Yaesu FT-101 HF Transceiver Home Page, NW2M http://www.qsl.net/nw2m/
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