New home for the 146.76 repeater

A new home has been found for the 146.76 repeater. Nemours Chidrens Specialty Clinic in downtown Jacksonville has agreed to host the repeater.   The mounting location for the antenna will be on the roof of the building at about 160feet.    Below is a map of the estimated coverage.   Installation is expected to be complete by the end of November.

NOTE: This map is only an estimate of coverage.
Actual coverage can vary greatly depending on equipment used and atmospheric conditions. Green indicates typical hand held coverage. Yellow indicates typical mobile coverage.

Elections are tonight

If you are a member, please come to tonight’s meeting and participate in the elections.   Non-Members are welcome to come and observe but cannot vote.

The US Air Force reveals radical plan to ‘bomb the sky’ to improve radio reception

The US Air Force reveals radical plan to ‘bomb the sky’ to improve radio reception

  • CubeSats carrying ionized gas could create radio-reflecting plasma
  • This would occur in the ionosphere, which becomes denser at night
  • Bouncing signals between ground and ionosphere can improve range

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Presentation on all types of radio communications.



Your smartphone may stop working at any moment!

46% of smartphone owners say their smartphone is something “they couldn’t live without,” What can you do when a disaster strikes and it’s not working?
70% of towers went down in the areas affected by Hurricane Katrina.
Cell phone service wasn’t restored for weeks after 9/11
There doesn’t have to be a disaster for cell service to go down.
April 1, 2016 – ‘Customers throughout the Tampa Bay area suffered through a massive outage impacting cellphone customers.’ -TAMPA, FL (WFLA)
June 4, 2016 ‘Nationwide Cricket Wireless outage’ –

The Jacksonville Range Association presents ‘Radio Communications for Disasters’
September 6th 2016 at Memorial Hospital 3625 University Blvd S, Jacksonville, FL 32216
For additional information visit
All options for radio communications will be discussed.
• Amateur (Ham) Radio
• C.B. Radio
• Digital Spread Spectrum Radio
You will be able to TALK on and LISTEN to over a dozen different radios. You are also invited to bring any existing radios you may own.

Jacksonville RANGE Association, Inc.


IRS 501(c)(3) tax exempt
Jacksonville RANGE Association, Inc.
Agencies served
Agencies served


Jacksonville RANGE Association, Inc. is a not-for-profit tax exempt 501(c)(3) organization existing for the purpose of providing emergency communications to Jacksonville, Florida – Duval County, Florida – State of Florida – and Southeastern United States.

Incorporated under the laws of the State of Florida since early 1990, “RANGE” serves agencies such as Jacksonville Fire and Rescue, Jacksonville Sheriff’s Office, Jacksonville Electric Authority, American Red Cross, Florida Highway Patrol, United States Navy, et. al.

W4RNG is the Federal Communications Commission licensed call sign of the many communications systems owned, operated, and maintained by the Jacksonville RANGE Association, Inc.  The organization has been licensed and has been serving the community for over 40 years.

NOTE!  Our new permanent meeting location is Memorial Hospital, 3627 University Boulevard South, Jacksonville, Florida  32216.  The location of the meeting in the hospital is in the class room area adjacent to the auditorium at the southern end of the campus.




146.760 MHz repeater comes to life…  Saturday, April 23rd, 2016, Ben Bramlett K7BEN, (our dauntless Technical Committee Chairman) and Justin Ellis, Sr., KK4GPY, President of Jacksonville RANGE Association, Inc. and technical committee member extraordinaire, worked for nine hours at the Twin Towers near I-95 and Golfair on the north side accomplishing much!  146.760 MHz is on the air transmitting with about 160 watts of power to a high gain VHF antenna and is receiving, via remote pickup, 146.160 MHz from our Dames point site.

The Orange Park remote site has yet to be tied into the system through the LDG RVS-8 8 channel voter system which apparently suffered failure of a TL084 quad op amp chip and/or failure of a 3240 dual op amp chip so that it would pass no audio at all for either channel 1 (Dames Point) or channel 2 (Orange Park) through to the CAT-1000 controller board.

Another member of the Technical Committee, Jack Driskell, KB4B, has suggested that the failed chips be replaced by corresponding chips that are used for RVS-8 voter channels 7 and 8 which are not currently in use.  As all chips on the RVS-8 PCB are in sockets making the changes will not be too difficult.

IRS 501(c)(3) tax exempt
Jacksonville RANGE Association, Inc.

New 6 meter repeater under construction

We have taken out of service the 40 year old Motorola 6 meter FM repeater rack of equipment on 53.330/52.330 MHz at the Twin Towers on the north side.  The old unit had many problems.  The new repeater is being built from two Maratrac Motorola transceivers and, although capable of 110 watts output, the transmit unit will be programmed down to about 50 watts due to the extreme heat conditions of the environment.  As no one in the area has the necessary RIB (radio interface box) tool to interface between the programming computer and the radios, we are building one from a kit furnished by Richard Miller, K4IFG, on the west side.

The Maratracs are currently programmed for our frequency and access CTCSS (continuous tone coded squelch system) tones of 127.3 MHz both on encode and on decode.  The otne access will keep down the interference from out of the area signals especially during band openings.   The tones chosen are in accordance with the tones used by the vast majority of analog FM repeaters in the Florida Crown District area.

This will be the fifth and last RANGE repeater to be brought back on the air since we lost our primary site in 2015.

New Yaesu Fusion Repeater

Repeater picture
W4RNG 444.675 Fusion Repeater

About a moth ago the Jacksonville Range Association installed one of our two new Yaesu fusion repeaters.   The new repeater will continue operation on our existing UHF frequency of 444.675.  The old repeater will remain on location as a backup.  Yaesu Fusion technology allows us to continue to use our existing analog radios while allowing owners of fusion radios to take advantage of the enhanced audio and data that the digital system provides.  For more information on Yaesu Fusion, visit  Information on all of the Jacksonville Range Association’s repeaters, visit our repeaters page.

Jacksonville Range Association Inc.