Notes: Please don't make your database query too broad. For example, a search of "Everything, Everywhere, All Services, Any type" causes a lot of problems. First it puts a huge load on the server because it has to dynamically build the display page. Second it puts a huge load on the database engine which can cause it to time out. Third it can cause your browser to hang or crash due to the extreme size of the html table generated for the output. I don't care for ambiguous FCC-style coding, therefore usage codes are as follows: BIZ - Business TAX - Taxicabs TRA - Transit RRD - Railroad AIR - Civilian aircraft MAR - Marine MED - Media PHO - Telephone (MTS, IMTS, Cellular, Airphone) PAG - Paging RCC - RCC (I use this code to signify an RCC channel thats mixed phone/paging) POL - Police FIR - Fire CIT - City COU - County STA - State DNR - State DNR DOT - State DOT FED - Federal MIL - Military HOS - Hospital AMB - Ambulance FFD - Fast Food CBR - CB Radio FRR - FRS LPR - LPRS ITN - Itinerant ZZZ - Miscellaneous UNK - Unknown PL/Mode column is used as follows: Blank - means narrow FM or unknown. Since most listings are narrow FM I didn't see a point in entering it a zillion times. CSQ - means narrow FM and they use carrier-squelch 85.4 - A decimal number like this means narrow FM with tone-based PL. NODP - Means no decodable PL/DPL tone, but not 100% sure if its carrier-squelch. D732 - Anything starting with "D" means narrow FM with DPL. 3D1C - Four digit numbers are a trunked system ID TONE - Means tone burst GDTN - Means guard-tone P25 - P25 digital N123 - Anything starting with "N" means its the NAC code for P25 digital. SITB - SITOR-B WFM/AM/USB/LSB/ISB/FAX/TV/RTTY - Obvious... Type column is used as follows: S - Simplex BR - Broadcast B - Beacon R - Repeater Output i - Repeater Input L - Link transmitter SR - Simplex Repeater / - Paired duplex or half-duplex, like VHF Taxis, 800mhz Cellular, or ship-shore TR - Motorola Type 1 or 2 trunked LT - LTR trunked M2 - Multinet-2 trunked ED - EDACS trunked NX - Motorola Iden (Nextel) trunked D - Digital (pagers) V - Voice (pagers) Abbreviations used in the "Notes" field: CWID - Morse Code identifier A/P - Autopatch (telephone patch) or Airport ATC - Air traffic control (N) - Used at night. A small notation I use while trying to figure out who is using a particular freq. (NE) - Not English - Usually used when noting a shortwave transmission that is in some foreign language that I don't recognize. NBDP - Narrowband direct printing (marine teletype) * - Anything with a star in front of it means unverified data, for example something I got from the FCC database but haven't heard anybody actually using the freq. Other comments: I could have made an individual column for every imaginable category or detail however this format makes it easy to print out (which was the original purpose of this database). Thats why I have multi-use columns like the "PL/Mode" column. Multiple-category items are coded as I saw fit. For example Harborview Hospital 800mhz simplex is coded as "county" rather than "hospital" because that way it will be displayed in a county-only service search along with the trunked system freqs. All King Co Trunked Radio System freqs are coded as County even though the city of Seattle and the EPSCA cooperative run their own subsystems. This was done to simplify searching the database. KCTRS sites outside of King County (Apple Cove, etc.) are still coded as King County to simplify database searches. Port of Seattle is coded as "County". Yes I know they are a Port Authority and not a county agency. LTR systems are assigned arbitrary system ID's so that frequency groups at a particular site can be determined. A multiple-site system ID will be the system number, a dash, and then a site number (like 3-2). Motorola trunk systems will have the site number in the "channel" column. The site number might numerically be off by 1 depending on whether you go by the way Motorola numbers them or the way "Trunker" reads them off the control channel. Trunk talkgroups are listed with a freq of "99999". This was done to keep some search-by-frequency results from looking messy. The talkgroup number will be in the "callsign" field. The original scope of this database was based on what can be received in King and Snohomish county, regardless of where the originating point of transmission is. I have recently changed the format to accomodate frequencies from anywhere in the world. Some columns have multiple uses to make the most efficient use of screen real-estate. For example the "callsign" field is also used for talkgroup ID's. I'm sure there are many more little things I'm forgetting about right now. Whatever the case, there is a logical reason behind codings that might otherwise appear to be either incorrect or misleading.