Gerry_D
Member
- Location
- Scranton Pennsylvania
Hi Guys,
In another forum a co-member posted a statement as to the proper location of power inserter and a grounding block on an amplified TV antenna system.:blink:
We are in a bit of disagreement on it and I'm looking for a code interpretation.
In my opinion, a coaxial power inserter, one that puts DC on the coaxial line should be placed on the inside of the grounding block. :happyyes:
He said that in his experience it should be reversed with the power inserter between the grounding block and the antenna. Otherwise it dragged down the power supply to a lever of 3 or 4 volts. Removing the ground from the grounding block fixed the voltage drop. Placing the power inserter beyond the grounding block also corrected the problem. :happysad:
Technically / electronically, it would make no difference as the inserter has a capacitor to prevent DC from going downstream but allows it to go upstream to the antenna amplifier. ( Or so me speaking from 54 years or so experience in electronics. ) It also has a choke coil, on the lead connected to the coax center, inside it to prevent attenuation of the RF by the power supply circuitry. :huh:
He claimed to have installed hundreds of antennas his way. Granted I've installed less than 20 home TV antenna systems and had never encountered this problem.
What say you? :?
What does the code say? :?
Thanks for your time and help.
Some references I made are also in the thread here: Handyman Club
Cordially,
Gerry
In another forum a co-member posted a statement as to the proper location of power inserter and a grounding block on an amplified TV antenna system.:blink:
We are in a bit of disagreement on it and I'm looking for a code interpretation.
In my opinion, a coaxial power inserter, one that puts DC on the coaxial line should be placed on the inside of the grounding block. :happyyes:
He said that in his experience it should be reversed with the power inserter between the grounding block and the antenna. Otherwise it dragged down the power supply to a lever of 3 or 4 volts. Removing the ground from the grounding block fixed the voltage drop. Placing the power inserter beyond the grounding block also corrected the problem. :happysad:
Technically / electronically, it would make no difference as the inserter has a capacitor to prevent DC from going downstream but allows it to go upstream to the antenna amplifier. ( Or so me speaking from 54 years or so experience in electronics. ) It also has a choke coil, on the lead connected to the coax center, inside it to prevent attenuation of the RF by the power supply circuitry. :huh:
He claimed to have installed hundreds of antennas his way. Granted I've installed less than 20 home TV antenna systems and had never encountered this problem.
What say you? :?
What does the code say? :?
Thanks for your time and help.
Some references I made are also in the thread here: Handyman Club
Cordially,
Gerry