Indianapolis Radio Club

Central Indiana Repeater Association

The severe weather repeater is a 146.16/76 Yaesu Fusion machine (tone of 151.4 open repeater at present).
The antenna is located at 21st and Post Road in Indianapolis at a height of 340 feet and running 25 watts out of the duplexer.
For analog radios set the tone squelch to 151.4.
Also the association supports a 443.75 machine that is a fusion repeater with 100 Hertz tone. It also has a WiresX "Americas Room" connection.
Use the membership formto help support the repeater

Marion Co. Severe Weather Amateur Nets

PRIMARY Frequency: 146.760 Rec. 146.160 Trans. (tone of 151.4 open repeater at present)

Backup Frequency: 146.700 Rec. 146.100 Trans.
70CM Frequency down-linked to 2M. 443.250 Rec. 448.250 Trans**requires100.0 Hz tone to down link.

IPL Radio CLub repeater W9IPL

This repeater is the State RACES and WW2IND USS Indianapolis Memorial Station talk in repeater.

The 146.07/67 Repeater is a Yaesu Fusion machine (tone of 88.5 open repeater at present)
The antenna is at 4190 South Harding Street at 380 feet running 25 watts out of the duplexer.
For analog radios set the tone squelch to 88.5.


USS Indianapapolis Radio Room contact info is: Jason Edwardson, >>Telephone: 317.233.0528 >>Email: Tours are available Wednesday – Friday between the hours of 10 and 3. Weekend availability for special event tours may be available with advance notice (subject to docent availability). Radio Room operators are on site Wednesday, Thursday and Sunday from roughly 9AM till noon. These times are subject to change.

WW2IND station location is the Indiana War Memorial 55E Michigan St,Indianapolis, IN, 46204 Lat/Long…N39degrees_46.4’-W86degrees_09.4’
QSL policy… Include your QSL card & SASE to WW2IND, 6041 Copeland Ct., Indpls. IN 46221-4523
The USS Indianapolis (CA35) Amateur Radio Station welcomes anyone wishing to enjoy the pleasures and benefits of an association of persons commonly interested in World Museum Ships on the air event participation, other Ships/Associated On the Air (OTA) events and Amateur Radio.
The purpose of the USS Indianapolis Amateur Radio Station (WW2IND) Club; shall be to further the exchange of information and cooperation between all interested in these goals and to Promote: the World Museum Ships on the air event participation, while continuing support of the USS Indianapolis Survivors association, the Indianapolis World War memorial, and the USS Indianapolis (CA-35) exhibits.
CA-35 Museum ship operations are conducted from the U.S.S. Indianapolis Memorial station, located in the Indiana War Memorial museum downtown Indianapolis, Indiana.
The outdoor monument, which can be viewed anytime, was designated a National Memorial by an act of Congress in 1995.
Indianapolis Memorial station operates during Museum Ships during 1st Weekend June each year on Amateur radio frequencies.
Sponsoring local groups: The local Indianapolis area amateur radio operators, and Indianapolis Radio Club,
For more information, follow these links Indiana War Memorial and Museum Ships Weekend

Radio Room visitor entry

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USS Indianapolis Radio Room looking through south bulk head opening. This picture was taken from the old gift shop entrance that would have been a bulkhead on the actual ship. The Hammurlund Super Pro receiver is visible on the left along with some period radios and equipment from that era that might have been on the ship

Radio Room transmitters and receivers

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USS Indianapolis Radio Room looking east from maintenance desk. This view is taken by a person standing in front of the Hammurlund receiver in the previous picture. The transmitter with the danger high voltage sign on the front is the TDE transmitter used in one of the operational morse code operating positions. The boxes above the typewriters are period correct receivers. The RBC to the right of the clock and left of the fan is used for the operational morse code setup.

Radio Room receivers

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USS Indianapolis Radio Room looking east standing behind "Sparks" These are the operating positions where navy radio men sat on the USS Indianapolis while receiving and sending coded messages pertaining to ship operations. The third chair from the left is where the present day operator sits for use of the morse code operating position. The RBC receiver for use with the TCK and TDE transmitters is directly above the typewriter and has a speaker sitting on top. This receiver uses a "BFO" type scheme for morse code reception and generally operates at 7.060 megacycles in the 40 meter amatuer radio band. The operator at this station position generally provides their own telegraph key with a two conductor "1/4" jack. The transmitter works best with a straight key or "bug" semiautomatic key. The old transmitters relays do not follow a high speed modern keyers very well

Radio Room Electrical Details

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USS Indianapolis Radio Room power panel drawing. Caution historic document here from 1937 that may load really slow. Thanks to Jason Edwardson at the IWM for sending the drawing file. Lets see who can figure out what voltages went were and how the panel functioned?

Can you read the message?

Can you read the message?