Electro-Metrics · Electronic Components
EM-6857
Antenna — Antennas and Waveguides
Part NumberEM-6857
ManufacturerElectro-Metrics
AvailabilityAvailable to order — request a quote
Specifications
NSN5985-01-708-0930 (NSN)
Federal Item NameANTENNA
Federal Supply Class5985 — Antennas and Waveguides
Overall Length17.5 INCHES NOMINAL
Overall Diameter4.5 INCHES NOMINAL
Frequency Rating20.0 MEGAHERTZ MINIMUM AND 40.0 GIGAHERTZ MAXIMUM SINGLE ANTENNA ELEMENT
Characteristic Impedance In Ohms50.0 SINGLE ANTENNA ELEMENT
Mounting MethodBRACKET(S)
Radiation PatternOMNIDIRECTIONAL SINGLE ANTENNA ELEMENT
Beam Scanning MethodFIXED SINGLE ANTENNA ELEMENT
Operating Temp Range-20.0 TO 50.0 CELSIUS
ESD/EMICode A — ESD/EMI sensitive item
RH Electronics, Inc. — independent stocking distributor since 1982.
Every shipment inspected on receipt · ISO 9001:2015 · ANSI/ESD S20.20 · ERAI member since 1998 · GIDEP participant
Every shipment inspected on receipt · ISO 9001:2015 · ANSI/ESD S20.20 · ERAI member since 1998 · GIDEP participant
Frequently asked
Is EM-6857 available?
We can source EM-6857 even if it isn't in our active stock list. As an independent distributor we reach inventory outside the franchise channel — including hard-to-find and obsolete parts. Send us a quote request.
Is EM-6857 by Electro-Metrics obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If EM-6857 has been discontinued, we can often source remaining stock or qualified alternates. Contact us with your quantity and target date.
How does RH Electronics verify parts like EM-6857?
Every incoming shipment is inspected under our ISO 9001:2015 quality system — documentation, markings, and construction checked against known-good references. For deeper analysis, we direct work through accredited independent labs. We've been an ERAI member since 1998 and a GIDEP participant.
Can you find a cross-reference or alternate for EM-6857?
Yes. Our team reads part numbers the way they were designed — decoding family, speed, temperature grade, package, and reliability level — to identify acceptable alternates when the exact part isn't available. Submit a quote request and we'll advise.