GUIDE TO MAXIMUM CABLE LENGTHS These cable distance maximums are industry preferences and longer lengths can be used. The use of cable signal boosters can greatly extend the usable cable lengths. Also the cable quality will have a major impact on maximum cable limitations. FORMAT
REMOTE CONTROL MODEL FREQUENCY CHART By: Don McClatchie The Federal Communications Commission (FCC) specifies the RF frequencies and spectrum that remote-control models can operate on. Operators who use frequencies in the Amateur Radio (HAM) Band must have an appropriate license to use those frequencies. There are other
RDS PI CODE FORMULA FOR STATION CALLSIGNS By: Don McClatchie The Radio Data System (RDS) Program Identification (PI) code is used to identify FM and LPFM stations that have four alphabetic character callsigns like (KAAZ or WZZA) etc. The PI code transmitted by the station must
AIR GAP NETWORK SECURITY By: Don McClatchie Air Gap network security sometimes referred to as “Air Wall”, and “Air Gapping” is a physical isolation method used to separate computers that need high security from any and all networks and other computers. This means no wired network
MEASURING IP CAMERA SIGNALS, WHY DO IT, AND WHAT ADVANTAGE DOES IT PROVIDE? By: Frank McClatchie Have you ever had a perfectly good IP Camera System suddenly stop working for no apparent reason, and then taken the Camera to the "Bench" to test it and found
WIRELESS DETECTION OF IP CAMERAS FOR TSSA REQUIREMENTS By: Don McClatchie IP cameras are used at gas stations to observe the fueling of trucks and automobiles for safety and security reasons. In Canada and elsewhere some safety agencies require continuous monitoring by employees and if the
ATTENUATION OF STANDARD COAXIAL CABLE By: Don McClatchie Coaxial cable is used widely in most types of communication systems. The properties of the coaxial cable make for a good wide-band path for all kinds of electronic signals. In fact, over 80 percent of the homes in the
MEASURING IP PICTURE MARGIN ON NETWORK CABLE SYSTEMS By: Frank McClatchie As most, if not all IP camera installers have discovered, to their sorrow, that IP camera Transmission Systems are subjected to a particular type of failure mode that gives absolutely no warning of the presents
ELECTROMAGNETIC RELAY DEFINITIONS By: Don McClatchie When designing or repairing electronic circuits that use electromagnetic relays a clear understanding of the important operational parameters of the relay can help you build a better project or help you to determine the reason for a failure. Let’s start with
VIDEO LOSS AND RELAY CONTROL ON AN IP NETWORK By: Don McClatchie Ethernet networks are popping up all over the place connecting security cameras to recorders, Peer to Peer communications, remote control and telemetering in ways never imagined. Since many IP signals are routed by switches
