User's Manual
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19541P‐42(02‐11)
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• Interfacecableassemblies:
DavidClarkIntercom CableAssemblyRequired
U3800VehicularIntercomSystem C99‐22MS(40935G‐08)
U9800MarineIntercomSystem C99‐20CX(40935G‐07)
U9500MarineIntercomSystem C99‐20LL(40935G‐06)
U3400PortableIntercomSystem
U3100ModularIntercomSystem
C99‐20MS(40935G‐05)
• WhipAntenna(P/N:40688G‐92)
• RemoteAntennaKit(P/N:40688G‐93)
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TheU9921‐GUVisnotuserserviceable.Donotattempttoopentheenclosure.Ifthisproduct
requiresservice,pleasecontacttheDavidClarkCustomerServicedepartment:
• Phone: 800.298.6235
• E‐Mail: serviceWWW@DavidClark.com
• ByMail: CustomerService
DavidClarkCompany
360FranklinStreet
Worcester,MA01604
Ifnecessary,theU9921‐GUVmaybewipeddownwithamildsoapandwatermixture.Although
itisasealeddevicedesignedtowithstandsubmersioninwaterto1meter,donot
unnecessarily
submersethisproductinwater.
Avoidstorageofthisproductindirectsunlightorhightemperatureenvironments.
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FrequencyRange 1920MHz‐1930MHz(U.S.andCanada)
1880MHz‐1900MHz(EU)
AverageRFPowerOutput4mW(100mWpeak)(U.S.andCanada)
10mW(250mWpeak)(EU)
Range 300ft(100m)line‐of‐sight(nominal)
OperatingTemperature‐14°Fto113°F(‐10°Cto+45°C)
StorageTemperature‐4°Fto140°F(‐20°Cto+60°C)
PowerRequirements 8to25VDC