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Operation Manual
Video Entertainment System
PR-422CA Marine AM-FM/TV Antenna
PR-420CA Marine FM/TV Antenna
NSN: 5985-01-369-2757 PN: PR-420CA (0GMC3)
NSN: 5985-01-379-9838 PN: PR-422CA (0GMC3)
Printed in USA
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Related Manuals for Naval PR-422CA
Summary of Contents for Naval PR-422CA
- Page 1 Operation Manual Video Entertainment System PR-422CA Marine AM-FM/TV Antenna PR-420CA Marine FM/TV Antenna NSN: 5985-01-369-2757 PN: PR-420CA (0GMC3) NSN: 5985-01-379-9838 PN: PR-422CA (0GMC3) Printed in USA...
- Page 2 Shipping container dim : 19 x 19 x 16 inches The PR-422CA is based on a construction of 3 circular dipoles coupled to a low noise amplifier via a broadband filter network. Maximum performance is assured through the extensive use of a Network Analyzer in the initial design and in the final construction and tuning of each unit.
- Page 3 Projected life at sea >15 years. This internal amplifiers receive (+15VDC) operating power from the Naval head-end via coax cable. It is removable, through the mounting flange, for repair or upgrade. This is a factory repair item and should not be serviced by the untrained.
- Page 4 Installation Instructions for: TV Antenna System. Mount the PR-422CA/PR-420CA antenna high on the ship’s superstructure, clear of nearby objects. It is best if the antenna is the highest object on the ship to insure maximum possible range and Omni- directional performance. Do not mount the antenna in the beam of radar.
- Page 5 The head end amplifier cabinet is supplied with feed-through F connectors. The shipyard may wish to change over from RG-11 cable to RG-6 with a pigtail splice near the cabinet; alternatively, RG-11 may be connected direct to the F connectors on the cabinet if convenient. All coaxial cables should be tagged on each end with a non-metallic tag.
- Page 6 These final drawings are invaluable for future trouble shooting. Copies should be made for Naval Tampa, the Ship-owner, and the Shipyard for future reference. Naval Tampa will archive such drawings in hard copy and on electronic media where possible.
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Page 7: Technical Specifications
Locate a TV station in the low VHF band and adjust the monitor for best picture. Locate the attenuator on the PR-422CA/PR-420CA and turn it full counter clockwise to introduce maximum attenuation of 20 dB. Turn the attenuator slowly clockwise while observing the monitor. - Page 8 Using Coax-Seal® to waterproof a coax cable splice This is a new space age plastic material which will quickly and effectively seal all types of coax cable fittings. COAX-SEAL stays flexible for years thus insuring moisture proof connections, good SWR and long coax-cable life.
- Page 9 A small roll of Coax-Seal. It is a putty like Note that the first wrap comes back on itself exactly and the second turn starts the diagonal material in tape form. The white waxed paper wrap. Wrap from the coax cover toward the keeps it from sticking to its self.
- Page 10 Changeable Antenna Amplifier Reference from www.naval.com/tube-amp Removing the changeable/repairable amplifier Look into the mounting flange and the white plastic cap will be seen. Grip the rim of the cap with long nose pliers and pull.
- Page 11 FOOTNOTE: This product is normally produced as RoHS but can be modified with leaded solder to increase reliability under extreme shock, temperature (thermal fatigue), and vibration at sea. Lead content is then less than 10 grams of Lead (Pb) total. Specify with order and note that RoHS certification and sticker are omitted.
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