General Dynamics C4 Systems URC-200 (V2)
64
Table 13 – Transceiver Status Inquire Commands (Continued)
CODE NAME DESCRIPTION
Bandwidth
Returns value in the form: “<xxxx”
xxxx = bandwidth value for the current Rx channel (25 KHz or 8.33
Returns value in the form: “?”
The string returned by this command depends on debug code
provided by the developer. If the chip was not compiled with the
debug option, then this command returns a NAK.
The following inquiry command applies to transceivers with the EBN-30 Option, 30-90 MHz Band
Enhancement.
Returns the status of the 150 Hz tone squelch. See ">" command in
the Transceiver Adjustment Commands. Returns ">n" where ‘n’ = 0
for unsquelched, and ‘n’ = 1 for squelched.
4.7 Options
The following options are available for the URC-200 and URC-200 (V2).
4.7.1 EBN-30, 30 TO 90 MHz Option
Part Number 01-P37200N001. This option provides the 30 to 90 MHz (LVHF) band to the URC-
200 (V2) Radio Set. Many of the operational features in the 30 to 90 MHz frequency band are the
same as in the VHF or UHF frequency bands.
4.7.1.1 Frequency Range
The 30 to 90 MHz range of frequencies resides in the Low VHF (LVHF) band of frequencies. The
LVHF frequencies on the URC-200 (V2) have a center frequency tuning increment of 12.5 kHz.
4.7.1.2 Tone Squelch
Normally the URC-200 (V2) in the LVHF band will use a 150 Hz Tone Squelch that is compatible
with other radios in this band of frequencies. If desired, the tone may be turned OFF, however,
“white-noise” will be coming from the speaker.
4.7.1.3 Modulation
The URC-200 (V2) using the 30 to 90 MHz option will receive and transmit FM modulation only.
4.7.1.4 Carrier-to-Noise Squelch
The carrier-to-noise squelch, which is set by the Squelch Control when the URC-200 (V2) is in the
VHF or UHF frequency bands, is effectively disabled in 30-90 MHz band.
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