Propagation frequency evaluation (NSN 6660-01-148-4205)
Special Features
C/o high freq radio pulsed transmitter, hf radio receiver, embedded computer and on-site and remote peripheral equipment; freq 1.0-30 mhz in 1mhz increments; observation every 5, 10, 15, 30, 60mins. Or normally once every 15 mins.From remote/on-site; automatic restart; rack mtd; 72.000 in.H; 21.750 in.D; color semi-gloss blue no.25488 fed-std-595; reliability of 800 hours
Storage Tempurature Range
-80.0/+160.0 degrees fahrenheit
Joint Electronics Type Designation System Item Name
Digital ionospheric sounding system
Joint Electronics Type Designation System Item Type Number
An/fmq-12
Part Name Assigned By Controlling Agency
Digital ionospheric sounding system
Functional Description
Measures, records, transmits vertical ionospheric info incl freq, heights, coefficients used to define e and f layers of ionosphere
Reference Data And Literature
31m1-2fmq12-4
Test Data Document
98749-82-033a specification (includes engineering type bulletins, brochures, etc., that reflect specification type data in specification format; excludes commercial catalogs, industry directories, and similar trade publications, reflecting general type data on certain environmental and performance requirements and test conditions that are shown as "typical", "average", "", etc.).
