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We’re planning to start featuring some nautical-themed photos taken along the Staten Island waterways and shoreline for your viewing pleasure.

This, a December morning shot taken between Bay St. Landing and Miller’s launch.

Miller's Launch at late December sunrise.

Distant view of Miller's Launch from Front St. on Staten Island.

Miller's Launch logo sign at the pier 17 entrance, Staten Island.

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Hey everyone MMNC and its newest interns just got featured on CSI Today, we just like to take this time to congratulate them on their hard work and want to thank them for their constant support towards the museum and wish them luck to keep striving for their future. If you guys want to read the article we left the link down below and leave a like or comment to continue to support MMNC and thank our newest interns.  

http://csitoday.com/2016/12/museum-of-maritime-navigation-and-communication-provides-employment-for-csi-students-receives-official-state-charter/#.WFQR6BsrJkh

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The Museum of Maritime Navigation and Communication would like to say Thank You to Alois Langerfor the Trimble Navigation GPS. Every piece of equipment you all donate or any type of support we get from you is always apprecitea. So thank you again Alois for this great post of equipment. #MMNCNY

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The Museum of Maritime Navigation and Communication would just like to say thank you again to Murray Gottlieb for the Gyro compass. Every piece of equipment you all donate or any type of support we get from you all is always appreciated. So than you again Murray for this fine piece of Equipment. #MMNCNY

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The Museum of Maritime Navigation and Communication would just like to say thank you to Murray Gottlieb for the Astrolabe. Every piece of Equipment you all donate or any type of support we get from you all is always appreciated. So thank you again Murray for this fine piece of Equipment. #MMNCNY

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Watch Receiver:

A watch receiver is a receiver dedicated to guarding a distress frequency. A high seas watch receiver is usually quiet. It will un-squelch when a distress signal of the proper format is received. It will not respond to ordinary calls to establish communication. The frequency is 2.182MHz, the international distress and calling frequency. A marine V.H.F. watch receiver is dedicated to guarding channel 13 (156.650MHz) for safety (security) broadcasts. It is especially useful for vessels running coast wise or in harbors. Some channel 13 receivers include a transmitter so that a safety situation can be transmitted to other stations in the vicinity.

Intech Mariner 1511

Manufactured by: Intech

Model: Mariner 1511

Date of Mfg: 5-81

Capacity: 12 Channels Crystal

Check out more on Watch Receiving Regulations in the link down below: 

 http://www.navcen.uscg.gov/?pageName=mtWatch

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Radiotelephone:

Radiotelephones came into use in the 1920's and 1930's.  Radiotelephones are a means of voice communications with a shore or ship telephone via marine operator, directly with a dispatcher, agent or owner, or directly with other vessels. The first radiotelephones were amplitude modulated (AM).  These were subject to interference by atmospheric noise and man-made noise.  The operating frequencies range between 2 and 23 Megahertz; the operating range under favorable conditions is several thousand miles. In the 1950's a very high frequency (VHF) band of frequencies was set aside for marine use.  At first there were 26 channels.  Communication is essentially line-of-sight, making the useful range about 20 miles offshore from a shore station.  In the late 1960's the number of channels was doubled by making each channel half of the bandwidth (50 kilohertz per channel was changed to 25 kilohertz). The VHF marine channels are frequency modulated (FM), providing some immunity to noise. In the 1960's, Single Sideband (SSB) began to come into use.  SSB has an advantage of needing less than one-half the bandwidth that AM requires.  With the reduced bandwidth, interference by noise is somewhat reduced, and the number of available channels was more than doubled.  The use of SSB was encouraged.  In 1977 AM usage by law ceased; all high seas communications were mandated to be SSB.

VHF-Radio Telephone

Modar Electronics – D33ADA1020A

Manufactured by: Modar Electronics, Subsidiary of Motorola

Model: D33ADA1020A

Capacity: 55 Channels Synthesized, 25W/1W

Frequency Range: 156-157.45 MHz TX, 156-163 MHz RX

Power Requirement: 12VDC

  

Standard Comm. Corp. – Horizon MAXI

Manufactured by: Standard Comm. Corp.

Model: Horizon MAXI

Capacity: 55 Channels Synthesized, 25W/1W

Frequency Range: 156-157.45 MHz TX, 156-163 MHz RX

Intech – V-108

Manufactured by: Intech

Model: V-108

Date of Mfg: 1-78

Capacity: 12 Channels, Crystal, 25W/1W

Power Requirement: 12VDC 5 Amp

  

Cybernet – CTX7800S

Manufactured by: Cybernet

Model: CTX7800S

Capacity: 55 Channels, Synthesized, 25W/1W

  

Intech – Mariner 90

Manufactured by: Intech

Model: Mariner 90

Date of Mfg: 4-81

Capacity: 55 Channels, Synthesized, 25W/1W

Konigsberg Electronics – KR-25W

Manufactured by: Konigsberg Electronics (Konel)

Model: KR-25W

Capacity: 12 Channels, Crystalled, 25W/1W

Ray Jefferson – 7878M

Manufactured by: Ray Jefferson, Div of Jetronic Industries Inc.

Model: 7878M

Capacity: 55 Channels, Synthesized, 25W/1W

Single Sideband Receivers

Harris – RF-230M

Manufactured by: Harris

Model: RF-230M

Capacity: 95 Channels Synthesized

Frequency Range: 2-23MHz 

Hull – 922

Manufactured by: Hull

Model: 922

Capacity: 22 Channels Synthesized

Frequency Range: 2-10MHz

Northern Radio Company – N550A

Manufactured by: Northern Radio Company

Model: N550A

Capacity: 48 Channels Synthesized

Frequency Range: 2-23MHz

Intech – Mariner 500

Manufactured by: Intech

Model: Mariner 500

Date of Mfg: 9-83

Capacity: 12 Channels

Frequency Range: 2-3.4MHz

Power Requirement: 13.6VDC 20 Amp

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Satellite Navigator:

The Transit Satellite Navigation system was developed by the US Navy in 1964. It came into widespread use in the early 1970’s. The system consists of six or more satellites in nearly-polar orbits, transmitting data continuously. The receivers accept the data and from the characteristics of reception calculates own ship’s position, displayed as degrees and minutes of latitude and longitude. Future passes of satellites are also calculated even with own ship’s speed and course factored in. Coverage is worldwide, but not continuous, as a ship may be out of view of a satellite for an hour or more. The Loran C and Transit Satellite Navigation systems, while capable of accurate fixes (within a few hundred feet for transit satellite, less than 100 feet for Loran C), have largely been supplanted by GPS (Global Positioning System) With 24 satellites, coverage is worldwide and virtually continuous. Position is given in degrees and minutes of latitude and longitude. Accuracy is capable of being within a few feet. Satellite Navigation is a system that uses satellites to provide autonomous geo-spatial positioning. It allows small electronic receivers to determine their high precision using time signals transmitted along a line of sight by radio from satellites. The system can be used for navigation or for tracking the position of something fitted with a receiver. The signals also allow the electronic receiver to calculate the current local time to high precision, which allows time synchronization. Satellite navigation systems operate independently of any telephonic or internet reception, though these technologies can enhance the usefulness of the positioning information generated.

Raytheon – RAYSAT-100

Manufactured by: Raytheon Marine Company

Model: RAYSAT-100

Operating Frequencies: 399.968 MHz

Magnavox – MX-5102

Manufactured by: Magnavox

Model: MX-5102

Power Requirement: 10-30 VDC 2 Amp

Operating Frequencies: 399.968 MHz

Japan Radio Company – JLE-3850

Manufactured by: Japan Radio Company

Model: JLE-3850

Power Requirement: 12-32 VDC 2 Amp

Operating Frequencies: 399.968 MHz

Navidyne – ESZ-4000

Manufactured by: Navidyne

Model: ESZ-4000

Date of Mfg: 6/80

Operating Frequencies: 399.968 MHz

Magnavox – MX-1102

Manufactured by: Magnavox

Model: MX-1102

Power Requirement: 115 VAC 50/60 Hz,150 Watts Max