How much can you lose on PL259?
How much can you lose on PL259?
That is an insertion loss of 0.019 dB for the pair of connectors. You say ” how can this be, the internal impedance of the PL-259 is 35 ohms, it’s got to cause a 1.43:1 VSWR? Well, it doesn’t. The mated UHF connector has an internal connector length of less than 0.9 inches.
What does PL-259 connect to?
The PL-259 is also known as a UHF connector with the common male/female variants. The male UHF PL259 is the most common connector used to interconnect equipment and antennas in ham shacks.
Can I cut VHF antenna cable?
Can I cut the cable on my VHF antenna? Yes, if you need to. However, you should leave at least three feet of coax, measured from where the cable exits the antenna.
What types of cables are commonly used in wired LANs?
There are three cable types commonly used for Ethernet cabling: coaxial, twisted pair, and fiber-optic cabling. In today’s LANs, the twisted pair cabling is the most popular type of cabling, but the fiber-optic cabling usage is increasing, especially in high performance networks.
What size hole for NMO mount?
¾ inch diameter
NMO mounts come in various styles and the only difference is how the NMO connector is terminated on the opposite side. As we move from left to right, you will see a NMO mount to be used in a ¾ inch diameter hole with a length of coaxial cable attached. This would be used to mount an antenna on a roof of a vehicle.
What is the insertion loss of a PL-259 connector?
Most adapters have a very low loss, one that cannot be measured without some pretty good test equipment. A number of years ago I ran into a situation with an installation that had used some Radio Shack PL-259 and PL-258 connectors in the commercial 450 MHz band in which each connector had an insertion loss of just over 1 dB per connector!
Is the PL-259 a UHF connector?
Ah the PL-259 (and its sister SO-239) connector. No one connector has engendered more commentary on performance issues than these. Humorously these connectors also have the name of ‘UHF’ Connector as if to suggest they perform well at 300+ MHz. Once upon a time, when the PL259 was born, 30 MHz was UHF.
Does PL-259 work at 70 MHz?
I tested to 500 MHz, but the issues with the UHF (PL-259) connector system becomes apparent at around 70 MHz. There are two individual tests in this experiment: S11 Return Loss and S21 Attenuation. S11 is analogous to the familiar SWR check, but with a bit more information.
What is the power loss of a SO-239 power connector?
“With.1 dB loss per connector, power loss in a PL-259 SO-239 combo would be about 35 watts at 1500 watts.”
