ATN WINTER NEWSLETTER 2003

On the Air to Everywhere

W5ATN W6ATN W7ATN www.atn-tv.org

ATN Chapters & Presidents

WINTER MEETINGS: Click here for agenda

Arizona:

Saturday, February 1, 2003 at 12 noon sharp at the banquet room of JB’s Restaurant, 2560 West Indian School just east of 27th Avenue, Phoenix. The banquet room will be open at 11:30. Please RSVP Harold K7AED, he is at k7aed@starband.net so he can let JB’s manager know how many to prepare for.

Directions: Take I-17 north from downtown Phoenix and exit onto Indian School. Turn left (west) to JB’s just before reaching 27th avenue.

Talk in: 448.4 MHz White Tank Repeater, PL 103.5 Hz.

California/Nevada:

Saturday January 18 at 12:00 PM following the Cal Poly Swap Meet and ATN Breakfast at Bakers Square Restaurant, Indian Hill exit on I-10, Claremont. The meeting location is back at 250 Turner Ave., Guasti (near the junction of I-10 and I-15 near Ontario) at the San Secondo Church Hall at 12:00 noon sharp, doors open at 11 AM.

Directions: Get off the I-10 at Haven, go south then right turn on Guasti Rd. Left turn on Turner and left at second driveway into the church parking lot.

Talk in: 146.43 MHz simplex & 1286.15 MHz Repeater on Santiago, PL 85.4Hz.

New Mexico:

Saturday February 15, 2003 at 12 noon, doors open at 11 AM at the UpHi.net offices located at 711 W. US Hwy 60, Mountainair.

Directions: From the north, exit I-40 on highway 41 in Moriarty drive south for 28 miles then turn right (West) onto US highway 60 then about 7 miles till Mountainair. From Socorro, exit I-25 at Highway 60 (Bernardo exit), then go east about 35 miles to Mountainair. From Albuquerque, Take the Tijeras exit off I-40 (weather permitting) and follow Highway 337 to highway 55 then south to Mountainair or I-25 to 1st Belen Exit follow the road past the Wal-Mart to Main, turn left at Reinken and right at route 47 to US Highway 60 then east to Mountainair.

Talk in: Upper Rio’s 146.96 MHz repeater on Capilla Peak.

This will be the first meeting of our new chapter. Please RSVP Darlene, she is at Darlene@uphi.net or she can be reached by phone (505) 847-0036.

Our ATN winter meetings is your opportunity to participate in system technical discussions, ATN polices and renew your dues $75 per year to help offset site rent fees and insurance. If you are unable to attend the meeting in your chapter you can renew by mail by sending your dues donation to the ATN chapter secretary/treasurer in your state listed below:

ATN-AZ: Fran Sibert P.O. Box 505, Tonopah, AZ 85354

ATN-CA & NV: Mike Collis P.O. Box 1594, Crestline, CA 92325

ATN-NM: Darlene Campbell P.O. Box 864, Mountainair, NM 87036

ATN-IN: Henry Ruhwiedel 5317 W. 133rd Street, Crown Point, IN 46307

Come participate and meet your fellow ATVers.

Many of the ATN management and trustees from the other chapters attend each other’s winter meetings.

NEW REPEATER COVERAGE MAPS AND UPDATED WEBSITE:

Thanks to Matt KC7GSA for producing several great new coverage maps for each ATN repeater and a new system map. The maps give signal strength into a receive dipole antenna at 3 meters above ground from the ATV repeater based on the individual repeater technical parameters.

Don KE6BXT has done a great job this year with the website and making several updates and consolidating all the chapters into one website. Don took the new coverage maps from Matt and added them to the website. Log on to www.atn-tv.org and check it out!

DIGITAL ATN LINKS COMING:

Brett WA6SXU has worked on a video server specifically set up for linking to ATN chapters to far for analog microwave linking. The picture quality is great with up to 30 frames per second and good resolution. The quality is only limited to the size of the internet pipe. Brett is working on signaling to allow the repeater to be keyed up at the far end and visa versa. The server can handle up to 10 circuits at a time.

ATN-AZ NEWS:

Thanks to Jim AA7KC for running the ATN-AZ Tuesday Night nets.

USERY MT:

It is with great regret that the Usery ATN repeater was taken down. The site rent was very expensive and the trustee decided not to renew the site lease. Brian and others had work hard to keep the repeater running well over the three years it was at that site.

WHITE TANK MT:

Some of the planned projects for White Tank have been completed. Ward purchased a better 2.4 GHz preamp and Mike WA6SVT and Harold K7AED installed it into the equipment box at the top of the tower next to the 2.4 GHz antenna. Ward provided a test signal.

We also changed out the receiver. The combined result is snow free 2441.5 MHz pictures from 25 miles away running 800 mw into a Conifer 24 dBi dish. Most of the east valley members should be able to access White Tank on 2.4 GHz with 5 watts and a 24 dBi dish mounted above the buildings and trees.

The voice repeater’s controller was checked for proper de-emphases jumpers and we took out the jumper to provide crisper audio. A 100-watt amplifier is built and Harold is working on mounting it to a large heat sink before it is installed to provide a 7 dB increase in the output of the voice repeater.

MT. LEMMON:

Some planned projects for Mt. Lemmon has been completed. Harold K7AED is the new trustee. Ward WB7VVD donated an 8 bay 16 dipole 434 antenna to replace the old 4 bay antenna. He also donated an outside tower mounted equipment box. Mike WA6SVT donated a 434MHz band pass filter. Mike assembled the filter and preamp into the box. Harold K7AED, Ward WB7VVD and Mike WA6SVT installed the box and antenna on the tower and changed out the temporary equipment rack with a newer and taller rack with locking doors. We ran out of time to run coverage testing.

On a later weekend Harold K7AED changed the 434 MHz receiver and added a new ID disk to the Amiga computer and added a UPS unit to keep continuous power to the computer and controller during power interruptions. Coverage tests were done with about a 1 to 2 "P" unit improvement in received on the repeater’s 434 MHz receiver.

Near future plans include a link between White Tank Mt. and Mt. Lemmon and to add a 440 MHz voice repeater at Mt. Lemmon donated by Mike WA6SVT. He picked it cheap at the Ft. Tuthill Hamfest near Flagstaff last summer. Mark your calendar for next year’s Ft. Tuthill hamfest on July 25-27, 2003.

HAYDEN PEAK:

ATN is working on a linking project and ATV repeater to cover the tri-state area near Kingman to connect White Tank to Potosi. This will bring the Arizona system into the California and Nevada system, more details at the meetings.

ATN-CA NEWS:

Thanks to Jim K6CCC for running the Monday night Mt. Wilson ATN net. Tom W6ORG and Doug K6KMN also help run the net if Jim is not avalible.

Thanks to Dave KA6DPS for running the Tuesday night main ATN net, Dave has been doing a great job running the net for several years.

SANTIAGO:

The ATV repeater has been working well. Mike WA6SVT has been repackaging the 2.4 link receivers and main 2.4 input receiver into dicast boxes with identical layouts and setup to mount onto a single 5 ¼" high rack plate, Brian WB7UBB donated the frequency chips for the Wavecom 2.4 GHz receivers.

Mike added a receiver voter to the 1286.15 MHz control and voice repeater. Each of the California ATN repeaters except Santa Barbara has a 1274.15 MHz (our voice repeater input) receiver that is used for control of each ATV repeater, now that the link system was upgraded to a Wavecom unit with two audio channels he added the raw audio from each site via the unused audio channel. The raw audio is passed into a CTCSS (PL) tone decoder for signaling and then is de-emphasized and fed into the voter. The voter selects the site that has the best signal to noise/interference ratio. Oat, Santiago, Blueridge and San Gorgonio are the voted sites.

OAT MT:

Allen W6IST and Mike WA6SVT provided weed abatement at the site late last spring and provided preventive maintenance to the repeater. Allen donated a new cooling fan and installed it into the rack.

BLUERIDGE MT:

This site is in transition of moving next door to another building. Abel N6ENL of the SCRN 440 MHz repeater group purchased a building that was in disrepair. Several of the ATN members, WA6SVT, KD6OMV, K6IOJ, W6MAF, WA6SXU, KA6DPS (I hope I remembered all who helped) and members from SCRN stripped the building to its core and sealed the block walls, roof and painted, replaced the ceiling and resurfaced the floor. The tower was cleaned up and the center antenna mast replace with a larger more heavy duty one.

This spring after the snow melts we plane to move next door. The new site gives ATN a much better link antenna location that is fully clear of the trees and the site has 8-foot open bay racks that will relieve the small equipment box we are in now. The tower has a 10 ft radome covered dish already aimed at Mt. Potosi, We just need to transfer the feed horn.

MT. WILSON:

Doug replaced the repeater driver amplifier that had failed with a newer amplifier donated by Mike WA6SVT. ATN is in final planning for a link between Blueridge and Mt. Wilson. The link should be installed after the Blueridge move. A large dish is already installed on the new site at Blueridge and aimed at Mt. Wilson. As weather permits this winter or spring the 434 and 1241 antennas will moved off the front tower bracing and onto the tower leg in preparation of the major tower work so the TV station can add DTV antenna. The building will undergo major remodeling for DTV and the repeater most likely will need to be stored away while construction takes place. Mike has a new 1241 MHz antenna for the repeater and most of the mounting brackets.

San Gorgonio:

The amount of electrical power is at a premium at this site and commercial clients have priority. ATN may have to relocate the repeater to a new location or workout a new solution. Moody and Mike are looking into our options at this time.

SANTA BARBARA:

Rod WB9KMO and Paul W6VLM worked on some repeater projects and weed abatement this year. Mike WA6SVT and Rod ran 2.4 GHz loss tests on the long cable run from the link dish to the equipment rack and took physical measurements for the 2.4 GHz link equipment for the back link to Santiago. Mike has the amplifier and bias tee ready. Rod has the repeater controller ready for adding the link.

Mike is working on the link transmitter Rod sent him and the amplifier he built up to fully test the link transmitter-separate amplifier combination before it is installed later this winter. Rod provided and operated an ATV station at the Santa Barbara ARC field day site this summer.

Mt. Palomar (Palomar ARC)

Some major internal changes have taken place with our affiliated group. Bill KB6MCU is no longer connected to the repeater and the link was turned off. I have sent a letter to the Palomar club to address the repeater and have received a response that the Palomar ARC is interested in getting the ATV repeater back up. Art KC6UQH and I have offered to help. The ATV repeater issues will be discussed mid January at the Palomar ARC board meeting.

ATN-IN NEWS:

CROWN POINT:

Henry AA9XW has secured a new location for the old Chicago repeater that used to reside in the Sears Tower downtown. The new location is about a mile south of his new QTH at PBS channel 51 in Northwest Indiana were Henry is the Chief Engineer. The TV station has a 1,000 tower and has a communications antenna bays at 500 and 550 ft. Henry had 1 5/8" heliax ran installed to each location, one for the receive antenna (550 ft) and the other one for the transmit antenna. Andrew Corporation built him a commercial 11.5dBd slot antenna for 70cm.

Mike WA6SVT tuned up a CATV modulator for 421.25 MHz, the repeater output frequency and sent it to Henry. Henry is currently repackaging the repeater and hopes to have it on the air soon. Future plans are to add a 1.2 or 2.4 GHz alternate input later this summer and a link or two to other ATV repeaters. Northwest Indiana-Chicago Illinois is the newest area joining the ATN Team.

ATN-NV NEWS:

Mt. POTOSI:

Last summer Geoff KB7BY and Mike WA6SVT made a trip to the mountain to make repairs to the 2.4 GHz receiver and main transmitter. Mike had repackaged the receiver and changed the frequency to 2441.5 MHz then brought up the receiver to Mt. Potosi. Geoff and Mike removed the down converter from the tower mounted box and left in the filter and preamp after retuning it to 2441.5 MHz.

Geoff replaced the main repeater transmitter. At the present time the local power company is trenching the roadbed and replacing the main underground power feed to the mountain. News Flash! I was just informed the power is back on and the power company just finished the project. Ken KC7DEN is now getting the group back together and is planning to organize a group trip to the ATN-CA & NV winter meeting, contact Ken at kc7den@lvcm.com to RSVP for the trip.

ATN-NM NEWS:

Ben’s Bluff:

ATN has a working repeater installed on Ben’s Bluff 11 miles west of Estancia, NM. Earl N8TV, Darlene KD7HPN and Mike WA6SVT installed the repeater last summer. This fall Mike donated a bigger better 1253 MHz transmit antenna. Coverage is to the communities east of the mountains near Albuquerque. Plans in the near future are to locate a suitable site on Capilla Peak to cover both sides of the mountains including Albuquerque.

THANK YOU:

The ATN Trustees and management want to thank all of the members who donated items, designed and built items, helped at the sites. It is your efforts that greatly help make ATN the network that it is. ATN is the world’s largest & Successful ATV repeater club thanks to your help and support of the Membership.

The newsletter is a collaboration of the ATN trustees and management with editing from Harold K7AED, Darlene KD7HPN and Mike WA6SVT. ATN is providing this newsletter via email, it is vital to keep ATN informed of your current email address if you want to receive the two yearly newsletters.