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Nixa Amateur Radio Club ***An ARRL Affiliated Special Services Club***: Meetings: Second Saturday of each month at the Nixa Fire Department Community Room located at 711 N Main St in Nixa. VE testing at 4:30 p.m. The General Business meeting follows and begins at 6:00 p.m.President--Shawn Roesslet, KE0JGI; Vice-President--Jim Nicoll, WA0MBE; Treasurer--Jeff Morrissey, KB0WVT; Secretary & Webmaster--Randy Jordan, KC0UKB

Repeater Trustee--James Adkins, KB0NHX


www.nixahams.net and www.smlrs.info

Everyone is welcome to attend and/or join our exciting and growing club. Dues: $12.00 yearly for individual or $18.00 for all family members. The club currently supports a 2m repeater on frequency 145.270 tx/144.670 rx with 162.2 Hz. The Repeater is good for mobile coverage up to 50 miles from repeater site. It is a mixed-mode Motorola Quantar with DB-224 antenna mounted atop a city water tower with the antenna at 1449 ft above sea level; antenna fed with Andrew LDF6-50 1-1/4" heliax and repeater utilizes an SCOM 7330 repeater controller and DB-4060 duplexers.  This repeater supports analog communications as well as APCO P25 digital communications - use a NAC of 656 in P25 mode.

We also provide the 442.425 repeater with + offset at 447.425. Use PL 162.2 Hz to access this repeater. Coverage is generally 35 miles for mobiles running 35w. This repeater is located at the top of the Chrisitan County 911 tower in Clever, MO and utilizes a DB-420B 9.2 dBd antenna, fed with approximately 180 feet of AVA5-50 7/8" heliax. The repeater currently is a pair of Motorola CDM-750 UHF radios and utilizes an SCOM 7330 controller with 20-Watts output with an upgrade to a 200-Watt Motorola MSF-5000 in 2018. This repeater also acts as a UHF backbone "Linking" repeater for the club's Multi-Band Linked Repeater System allowing all of the Nixa ARC repeaters to be linked via full duplex.  The repeater is the backup for the Crane 442.150 "hub" linking repeater for the Southwest Missouri Linked Repeater Sytem (SMLRS) as well.  IRLP Node #3995 will be active again on this repeater in 2018

Perhaps one of the most exciting things in amateur radio in Southwest Missouri in 2006 happened in early June when the first 6m repeater in the area went on the air operating on 53.270 TX / 51.570 RX PL 162.2 Hz tone at its permanent location. It is regularly heard by stations as far away as Kansas City, MO in both a mobile and base station environment. The 6-meter repeater is a top-notch professional installation utilizing two CDM-750 low-band radios modified for the ham band and a Henry C300C30R repeater amplifier to push the final output to 250w. The antenna system consists of a DB212-C-6 6-bay folded dipole array with the top element at 500' spanning over 80 feet of tower. It is fed with Andrew LDF6-50 1-1/4" heliax. TX RX duplexers for 6-meters and TX RX 11-14-06 dual-cavity bandpass filters separate the transmit and receive audio. Also installed is an Andrew DB-408A UHF antenna at the 400' mark which serves as receive antenna for the system's remote receivers in Branson West, El Dorado Springs, Granby and Strafford.  A future receiver is proposed for the Preston, MO area.   The system links into the Nixa ARC linking network for our Thursday night nets and the  Region D ARES 6-meter net is held on this repeater on Monday nights at 7:30 p.m.

In March 2008, the Nixa ARC installed the 224.280, input 222.680, PL 162.2 Hz.  The repeater moved to the Christian County 911 tower in Clever in 2017 from Cox South Hospital in Springfield. It utilizes an SCOM 7330 controller and a pair of Motorola CDM-1550LS+ 220 MHz radios act as the repeater with a 20-Watt output. Duplexers are TX RX 28-52-02A and the antenna is a 6 dBd gain Andrew DB-224JJ. It provides similar coverage as the 442.275 repeater.  This is the only open 220 MHz repeater in Springfield.

The Nixa ARC began working with the Southwest Amateur Radio Group in Neosho, the MSHP amateur radio club (Mulebarn) and the Vernon County amateurs on the Southwest Missouri Linked Repeater System in 2012. Still growing, the Nixa ARC operates the 147.015+ PL 162.2 Hz in Springfield, the 442.150+ PL 162.2 Hz in Crane and the 444.975+ PL 162.2 Hz at Stockton Lake and the 146.655- PL 91.5 Hz in Branson. For more info on this system utilized by Region D ARES, visit www.smlrs.info

All Nixa Amateur Radio Club repeaters have FULL backup power. The 145.270 runs on battery power 100% of the time, thanks to the connection to the Verizon battery bank, the 53.270, 147.015, and 444.975 repeaters have a  UPS backup in addition to the site generators. The 146.655, 146.775, 224.280, 442.425, 443.400 and 927.0125 repeaters have permanent mounted generator backups as well. 

In 2008, we also received a grant to purchase equipment to allow all of or a combination of our repeaters to be linked together. The linking system uses the 442.425 repeater as the "hub" repeater. The 53.270 and 145.270 repeaters all have dedicated link radios that when enabled use the 442.425 repeater to link all repeaters together. The 224.280 repeater is linked in via the controller as it is co-located with the 442.425. During our nets on Thursday nights, we encourage all area amateurs to check into the Thursday Night NARC net at 7:30 p.m. and test their gear on as many different bands as they want. The linking system is done "right" in that when the net begins, the 442.425 drops its hang time and courtesy tone and doesn't encode a PL tone with the CW ID. You do not hear other repeaters IDs or courtesy tones across the link either. With the audio levels set as they are, it makes it nearly impossible to determine what repeater a person is checking in by on the net. The links rise automatically at 7:00 p.m. and are de-activated automatically at 9:00 p.m. Thursday night. This gives everyone ample time to check out radios and antennas on several amateur bands throughout the evening.  In 2013, the club began linking the Southwest Missouri Linked Repeater  System (SMLRS) into the club's Multi-Band Linked  Repeater System for the Thursday Night NARC Check-In Net.  In 2017, DMR was linked into these systems allowing amateurs to check in via the Southwest Missouri Talk-group, 31291.

In 2010, the club added a 112-book library featuring some of the most hallowed amateur radio books of all time, including several different ARRL handbook versions. Books are available to club members only, and available for checkout and return at club meetings.

On July 3, 2012, the 442.150 +, PL 162.2 Hz repeater was put into service. It is located on a City of Crane water tower, and the Andrew DB-420 is mounted 200' AGL / 1505' AMSL and fed with Andrew LDF5-50 7/8" heliax. The repeater, a Motorola MSF-5000, has 78w output with TX RX 28-66-02A duplexers donated to the club by James Adkins, KB0NHX. The repeater controller is an SCOM 7330, and we built our standard FC-2 fan control unit in a 19" rack mount assembly. The site has a Motorola XPR-6550 UHF DMR link radio to Brandmesiter Talkgroup 31291, which is connected to an Andrew DB-436A UHF Yagi at 175' AGL. The antenna is also fed with 7/8" heliax.

In October 2012, the 147.015+, PL 162.2 Hz repeater was placed into service in Northeast Springfield.  The repeater antenna, an Andrew DB-224E, is mounted 400' AGL and fed with Andrew AVA7-50 1-5/8" virtual air heliax.  The repeater utilizes a 300w Crescened amplifier, which runs at 200-W output for 150-W out of the duplexers.  It is driven by a Daniel's Electronics MT-2 repeater with an SCOM7330 controller providing all the audio handling.  The site uses a Motorola CDM-1250 to link to the Crane 442.150 hub linking repeater with an Andrew DB-436C antenna at 60' AGL fed with Andrew LDF4-50 1/2" heliax.  Also on site is the SMLRS NXU-2A VoIP linking for use by public safety entities during an emergency.

In October 2013, the 444.975+ PL 162.2 Hz repeater was placed into service at Stockton Lake.  The repeater antenna, an Andrew DB-420, is mounted 220' AGL and fed with Andrew LDF5-50 1-1/4" heliax.  A 110-Watt Motorola MSF-5000 is used for the repeater, with the SCOM7330 controller handling all audio and signalling.  A Motorola CDM-1250 is used to link to the 442.150 Crane hub linking repeater.  This repeater links the 145.450- PL 91.5 Hz Nevada repeater into the Southwest Missouri Linked Repeater System.

In July 2014, the 927.0125- PL 162.2 Hz was put on the air in Northeast Springfield.  The repeater is a 150-Watt Motorola MSF-5000 and an Andrew DB809KE-SY 9 dBd gain omni mounted at 180' AGL.  The antenna is fed with LDF5-50 7/8" heliax and has a range of 40 miles from the site.

July 2015 through July 2016 found the club focusing on building an emergency communications trailer to replace the de-commissioned HF station which had formerly been located at the Nixa Fire Station.  The trailer has 3 operating stations.  All 3 stations are equipped with Yaesu FT-950 HF radios, 110-Watt Kenwood TK-690H commercial radios modified for operation on 6-meters, and dual band radios.  Two operating positions currently have Yaesu FT-8900's for VHF / UHF use as well as Model 2 TYT MD-9600 VHF / UHF DMR digital radios.  Position 3 has a Yaesu FTM400DR for VHF / UHF analog and Fusion operations.  The trailer also has a Kenwood TK-690H modified for 10-meter FM operation, a Motorola CDM1550LS+ modified for use on the 220 MHz amateur band, and a Motorola Spectra modified for use on the 900 MHz amateur band.  Each station  has dual foot pedals and Radio Sport headsets for use with the equipment.  Each station has a Dell desktop PC with dual monitors and a soundbar, all networked together with a CAT-5 network and Microtik router.  The trailer has an on-board 50-Watt VHF repeater with a UHF link radio so that a portable VHF repeater can be set up and linked into the SMLRS linked system via a UHF  hub link radio.  The trailer also has an on board APRS node which can be changed into an on site 50-Watt digipeater with the flip of a switch.  The trailer is used for public service and special event stations and can be seen at the club's hamfest and other events.

In 2017, the club ventured into the world of DMR.  In April 2017, the 443.400+ CC5 DMR repeater was installed at Cox South Hospital in Springfield.  This repeater is a 55-Watt Motorla SLR-5700 and utilizes an Andrew DB408B with 30' of Andrew AVA5-50 7/8" heliax.  

In August 2017, the 146.775- CC5 DMR repeater went online in Ozark.  The Andrew DB224E is mounted 225' AGL and fed with Andrew LDF7-50 1-5/8" coax.  The repeater is a 110-Watt Motorola MTR-3000 with Sinclair 6-cavity duplexers.

In September 2017, the 146.655- PL 91.5 Hz repeater went online in Branson atop the water tower by the Titanic museum.  The Tait T-800, Series II 100-Watt repeater utilizes an SCOM 7330 repeater controller and TX RX 4-cavity duplexers.  The antenna is an Andrew DB224E with Andrew LDF7-50 1-5/8" heliax.

In February 2018, the 444.450+ CC5 DMR repeater went online in Branson atop the water tower by the Titanic museum.  A Motorla SLR-5700 repeater set to 55-Watts with TX RX duplexers and is attached to an Andrew DB420 antenna with Andrew LDF7-50 1-5/8" heliax antenna.  This repeater was a joint effort between the Nixa Amateur Radio Club and the  Tri-Lakes Amateur Radio Club

Everyone is invited to one of our club meetings, held on the second Saturday of the month as mentioned above. Lots of excitement about ham radio at our meetings as we discuss our primary goal of expanding the bands in Southwest Missouri allowing hams to venture outside the lines and into repeaters on new bands.

See you soon!

8584101 Last modified: 2018-01-16 03:29:14, 12136 bytes

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