Specifications

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USOs ON|OFF Default: OFF
Mode: Baudot RTTY Host: US
_________________________________ Parameters: __________________________________
ON - Letters (LTRS) case IS forced after receiving a space character.
OFF - Letters (LTRS) is NOT forced after receiving a space character.
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Use the USOS Command (UnShift On Space) when you want your PK-900 to
automatically change from figures to letters after receiving a space character.
When using Baudot RTTY in poor HF receiving conditions, a received character can
be incorrectly interpreted as a FIGURES-SHIFT character, forcing the received
data into the wrong case. Many otherwise good characters received after this
will be interpreted as figures (numbers and punctuation), not as the letters
sent by the distant station. USOS ON helps reduce these receiving errors.
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Vhf ON|OFF/ON|OFF Default: ON/ON
Mode: Packet Host: VH
_________________________________ Parameters: __________________________________
ON - The modem selected in QVPacket is automatically selected.
OFF - The modem selected in QHPacket is automatically selected.
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Use the VHF Command for immediate software control of the PK-900's modem
selection. This command makes changing between HF and VHF packet modems on
each radio port easier. Remember to change HB appropriately.
Set VHF ON for VHF packet operation (default) and set VHF OFF for HF operation.
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VOltage Immediate Command
Mode: Command Host: VO
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The VOLTAGE command displays the result of three internal voltage measure-
ments. These measurements are:
1. The internal analog reference voltage. Nominally 6.70 volts, it
may range from 6.25 to 6.95 volts.
2. The 12 volt input. Two numbers will be displayed which are the
minimum and maximum values of the input voltage. For a well
regulated power supply, these numbers will be very nearly the same.
For a wall mount transformer, the numbers will typically have a two
volt difference. The lowest value should not be below 11.5 volts.
3. The internal 5 volt power supply. The range of values should be
between 4.6 and 5.4 volts.
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