George M (N2XM)'S NDB IMAGES

~~ GALLERY THREE ~~

On this page you will find another fine collection of George's NDB images, all of which serve Airports and Airfields in the state of New Jersey in the USA. These include the following installations: 'CAT' - 254.0 kHz at Chatham, NJ which is located at position: 40.44-26.810N 074.25-47.593W - [7 pictures], 'RNB' - 364.0 kHz at Millville, NJ which is located at position: 39.25-05.499N 075.08-06.076W, and according to airnav.com, this one runs 50 watts - [6 pictures]. There are also pictures of 'TT' - 369.0 kHz at Trenton, NJ - [6 pictures].


NOTE# All of the following pictures are copyright 'George M N2XM', and should not be re-produced with out first obtaining his permission - please ask us for his contact details if you should require them.




Click on the images to see the full sized larger versions:

CAT 254.0 kHzCAT on 254.0 kHz at Chatham, NJ:

This NDB is located along Southern Boulevard in Chatham Township, NJ. The antenna, strung at 40 feet between a pair of telephone poles about 200 feet apart, runs parallel to a busy commuter roadway. (323.0kb)
CAT 254.0 kHzCAT on 254.0 kHz at Chatham, NJ:

View to the south along Southern Blvd. The corner of the chain link fence seen at left is about 10-15 feet from the edge of the roadway. The south pole supporting the T-antenna is seen at far center. The antenna wire actually runs through the branches of the clump of trees seen on the left in the photo. (301.0kb)
CAT 254.0 kHzCAT on 254.0 kHz at Chatham, NJ:

North pole of the single-wire, center-fed T which runs through the branches of the pine tree. Note the climbing spikes on the pole which extend down to about six feet above ground level. Seemingly no lightening protection is provided on either pole. (381.0kb)
CAT 254.0 kHzCAT on 254.0 kHz at Chatham, NJ:

Exit point from the shack. The thin wire running downward on the side of the shack, estimated as size #14, connects to stake driven into the ground (not visible in pic) and, as near as could be discerned, is the only ground connection on the site. (143.0kb)
CAT 254.0 kHzCAT on 254.0 kHz at Chatham, NJ:

Connection to the antenna center. The telephone pole, which brings electric power to the site (see Pic 1), does not support the antenna's vertical wire. (173.0kb)
CAT 254.0 kHzCAT on 254.0 kHz at Chatham, NJ:

To whom is the message directed ... a pole climber or an antenna upgrade specialist seeking to expand a single-wire to a three-wire system? (251.0kb)
CAT 254.0 kHzCAT on 254.0 kHz at Chatham, NJ:

View of the undergrowth and trees surrounding this NDB site on three sides. Only the side facing the road has been cleared. (456.0kb)


Click on the images to see the full sized larger versions:

RNB 364.0 kHzRNB on 364.0 kHz at Millville, NJ:

Located off Sugarman Ave in Millville, NJ, the tower consists of five 20 foot sections bolted together plus an 8 foot base section for a total height of 108 feet. There are no guy wires. Partitioned into two sections, the security fence encloses an area of 80 feet by 80 feet. The rear section encloses the region beneath the tower which is accessed only through a padlocked gate located to the right of the shack in this view. (234.0kb)
RNB 364.0 kHzRNB on 364.0 kHz at Millville, NJ:

Pair of tower navigation lights with power fed via an isolating Austin ring transformer (see pic 6) located at the tower base. Apparently no capacity hat is needed. The purpose of the "Z" shaped rod bolted to the left side of the tower is unknown. It is unlikely to be an effective lightning rod for it does not rise above the top of the tower. (107.0kb)
RNB 364.0 kHzRNB on 364.0 kHz at Millville, NJ:

Elevated mesh counterpoise measuring (approx) 60 feet x 60 feet and raised 8 feet above ground level. (330.0kb)
RNB 364.0 kHzRNB on 364.0 kHz at Millville, NJ:

View of the labyrinth of structural steel anchoring the tower and supporting the counterpoise. Note the conduit running from the rear of the radio shack to ground. This conduit extends underground to the base of the tower and presumably encloses a wire carrying the transmitter signal to the antenna matching unit (see next picture). (397.0kb)
RNB 364.0 kHzRNB on 364.0 kHz at Millville, NJ:

A view of the matching unit. The transmitter signal presumably enters through the conduit in the unit's base. Another conduit, snaking up the left side of the tower in this view, carries the ac power to the Austin ring transformer (see pic 6) to power the navigation lights atop the tower. The rf output of the matching unit emerges via the ceramic standoff at the top of the unit. (518.0kb)
RNB 364.0 kHzRNB on 364.0 kHz at Millville, NJ:

View of the two power connections to the tower. The ac power for the tower lights is via the Austin ring transformer seen at lower left and hence through a conduit to a bolted connection (not seen in this view) about 6 feet up the left rear tower leg. Note the arc-over spheres that bypass the transformer. The feed for the rf power is via the wire seen bolted to the tower leg in the left foreground in this view. There is no electrical connection to the rain-shielded insulator centered within the tower legs although its suspension is such that the bottom of this insulator could have been used at one time as a feed point. But it is not now so used. (379.0 kb)


Click on the images to see the full sized larger versions:

TT 369.0 kHzTT on 369.0 kHz at 369.0 kHz at Trenton, NJ:

TT on 369 kHz is a FAA NDB beacon severing the Mercer County Municipal Airport in Trenton, NJ. However the site is actually located on the Pennsylvania side of the Delaware River at the intersection of Village Road and Silver Lake Road in Langhorne, PA. (The Delaware River serves as the boundary between NJ and PA.) The antenna is situated almost at the base of the northeast slope of an open field (cf. Pic 2 & 6). Note the difference in height at which the antenna wires are connected to the telephone poles reflecting the relatively steep slope of the hill. (434.0kb)
TT 369.0 kHzTT on 369.0 kHz at 369.0 kHz at Trenton, NJ:

View of the well maintained site located near the base of an large ploughed field sloping several hundred yards to the southwest. (325.0kb)
TT 369.0 kHzTT on 369.0 kHz at 369.0 kHz at Trenton, NJ:

View of the connections at the south pole of the center-fed three-wire symmetrical-T antenna. No lightning protection for the site was discernable. (197.0kb)
TT 369.0 kHzTT on 369.0 kHz at 369.0 kHz at Trenton, NJ:

View of the 75 MHz outer marker antenna and the discone antenna mounted atop the radio shack. The latter may provide a radio link to the airport. (393.0kb)
TT 369.0 kHzTT on 369.0 kHz at 369.0 kHz at Trenton, NJ:

View of the exit point of the wire from the shack to the T-antenna overhead. (325.0kb)
TT 369.0 kHzTT on 369.0 kHz at 369.0 kHz at Trenton, NJ:

Another view of the unusual location of this beacon - near the base of a hill with extensive open area to the southwest atop the hill. (258.0kb)


George has a number of other Galleries as well, just click on the buttons below to visit them:


We're very grateful to George for sharing this wonderful piece of NDB history with us, and if you have shots of your own that you would also like to see on display here in the NDB List Photo Gallery, we would love to hear from you too!



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Last updated 1st of January 2017.
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