Specifications

VHF Signal Connections Description
Balanced audio in VHF Rx balanced audio in, 600 Ω input impedance, 0dBm recommended.
VHF speaker level audio in VHF radio speaker level single ended audio input, 10 kΩ input impedance, gain adjustable on the Crossgate.
VHF mute in Active low, VHF radio mute state input, optically isolated.
VHF Audio Out VHF Tx VHF balanced audio out, 0dBm nominal into 600 Ω load.
VHF Mic. Level Audio Out VHF Tx single ended audio out, mic. Input level.
VHF PTT out Active low, VHF radio external PTT keying.
VHF ground 0 Volt VHF radio ground, internally RF isolated.

HF Signal Connections Description
HF ground 0 Volt HF radio ground.
+13.8 V +13.8 V Power from HF radio.
RS-232 I/O RS-232 control signals between HF radio and Crossgate.
Balanced audio in HF Rx balanced audio in, 600 Ω input impedance, 0dBm recommended.
Balanced audio out HF Tx audio out, 0dBm nominal, into 600 Ω load.
HF PTT out Active low HF radio external PTT keying.
HF mute in Active low HF radio mute state input.

Control Function DTMF Code Notes
Initiate patch/transmit *XXXX(XX)## XXXX(XX) is a 4 digit or 6 digit Selcall Selcall ID.
VHF/UHF Annunciation: “Selcall XXXX(XX) Sending, Patched in”, followed by a connection tone.
Terminate patch 99 VHF/UHF Annunciation: A hangup tone followed by “DTMF Hangup, Patched out”.
Select HF channel XX XX is the HF network channel number, in the range of: 01 to 50
VHF/UHF Annunciation: “Channel XX Selected”.

General
Indicators “Power on”, “Connected”, “HF PTT”, “VHF/UHF PTT”, Speaker level clip indicator.
Controls “VHF/UHF speaker level gain”
Input power +11 to +15VDC (12VDC Nominal)
Input current 176mA @ +12.6V input
Size 150mm x 66mm x 41mm (including mounting tabs)
Sealing IP41
Weight 0.18kg

Environmental
Operating temperature -20°C to +55°C
Storage temperature -40°C to +85°C
Humidity Up to 95% @ 55°C
Shock MIL-STD-810D, method 516.3 procedure VI
Vibration MIL-STD-810D, method 514.3 Category