The NC9RS Repeater system is an OPEN system for all HAMS! It is to promote the use of the 902-928 Amateur Band thru 900 MHz repeaters linked throughout Northern California and Nevada.
We promote "rag chewing" related to Amateur Radio! Talk as much as you want about DX chasing,your latest amplifier project,repeater project,antenna project, VHF/UHF/MW weak signal projects etc!
We DO NOT want to hear about your financial woes, political ideals, physical ailments, why your neighbor doesn't like you, why you don't like him etc! (unless it's because of your antennas!)
Sometimes it's OK to talk about wine, redheads and classic cars!..hi hi.
In short, this is a group of experimenters, DX Chasers, enthusiasts and a few "clowns". NOT gossip hounds!
The callsign of all the repeaters on the system is NC9RS/R, except for the repeaters on the system not owned by the club.
Things we are looking for...
ALLSTAR Node Equipment. Need equipment to upgrade to Allstar such as DMK Audio-USB adapters etc.
420 (403-430 split) Radios such as Maxtrac, Radius or CDM. Also, any of the UHF GM300's, Radius M10, M120 or M130 with the last three numbers of the model number 3AA or 1AA. The "AA" is insignificant. Just interested in the "3" or "1". NO "4" or "2" models!
As always, looking for 900 Maxtrac's and GTX's for "repeater stock" and Linc Com RLC-1 controllers.
The system is run entirely on donation$, so if you feel generou$, we prefer Paypal!!
The local repeaters are tied together thru a "hub" located about half
way between Placerville and Tahoe at 4600'.
After doing some frequency and Part-15 tests, I have determined that the Part-15 trash is EVERYWHERE! Even in the most rural locations! Because of this, most all of the repeaters on the system will be running 902.0125 for an input frequency. The Pl's will all be different. Some, will have "dual inputs" meaning you can use the 902.0125 or the standard 25 MHz offset input. ALL repeaters will have TX PL.
Because of the links and the scanning receivers at some sites, please wait a minimum of 1 second after keying the mic to allow time for all the links to come up.
View from just below site.
The Sacramento machine is located just East of the Sacramento/El Dorado county line at 1400'. The repeater runs about 30W to the antenna, a Scala OGB9-900 9dbd 900 MHz omni antenna. It is built from a Motorola Maxtrac receiver and a Motorola GTX transmitter running 1.3W into a surplus cellular amp with 50W output, thru a surplus cellular duplexer and BPF. Also running an N6CA (Angle Linear) 13db preamp resulting in a 0.17uV sensitivity at the antenna port! Mobile coverage is I-80 West to Benecia, I-5 South to Modesto, I-5 North to Corning and US-50 East to Pollock Pines. I-80 coverage East of Auburn is spotty.
BAY AREA (Oakland)
The Bay Area machine is located above the Caldecott Tunnel at about 1700'. Power is standard about 30W to a 8.5dbd 3deg downtilt antenna to keep the signal out of the valley. It has excellent coverage of the entire Bay area and Concord, Walnut Creek and surrounding areas. There is significant interference on the 902.65 input, so if your radio is capable of non-standard splits, we suggest you use the 902.0125 input. Both are 131.8 pl.
The Fresno machine is now located at about 3700' on Joaquin Ridge. Configuration is standard at about 30W to a 9dbd antenna and should cover hwy 99 from just south of Stockton to around Tipton. Hwy 5 from around Patterson to Kettleman City. There are some gaps around Santa Nela. It can also be worked easily from points along HWY 58 between Tehachapi and Bakersfield.
The repeater is up and running and linked in!
The Tahoe machine is at 8700' at Echo Summit and overlooks the entire Tahoe Basin. It even get's into parts of Carson City also! HWY 50 coverage is fair from Kyburz into Meyers and all around the lake.
View from site
The Corning machine is located at about 4000'el West of Corning. Configuration is about 15W into a 9dbd antenna and covers from about Arbuckle north to Shasta! There is a reduced coverage area between the north end of Red Bluff and Anderson. This is a SOLAR powered site, that's why the low output power. In the near future, we may raise the antenna and power to get better coverage North of Red Bluff.
** SUNOL (Mt. Allison)**
The Sunol site is located at 2650' on Mt. Allison just East of Milpitas. Thanks to all that helped getting this location! The Sunol machine will cover the Livermore/ Pleasanton area and the 680 corridor from just south of Danville to Fremont and the South Bay area into San Jose and south possibly as far as Gilroy! Pictures coming soon! *NOTE: As of 1/10/10, the 25MHz input is NOT operational. Only the 902.0125 input is working. This will be fixed later down the road.
** Mt. Vaca **
Thanks to Tim, KI6SSF, who has dedicated some time and equipment, there is now a machine on Mt. Vaca! The machine is located on the Eastern slope of the hill so there is no coverage West of the hill. It does improve the coverage in the Vacaville area and up the 505 corridor. It is on 927.3375 with the standard "dual" inputs of 902.3375 and 902.0125. PL of 162.2.
Bishop.....On The Air!
It is located in the Bishop Amateur Radio Club's building on Silver Peak at 10,800'. Coverage is along US 395 from around Lone Pine north to Mammoth. It should cover to various locations into parts of NW Nevada such as spots along US 95 near Goldfield. The repeater is linked into the rest of the NC9RS system via Echolink as the RF path is just too far and would create much more maintenance! Freq and PL is the same as Sacramento.
Special thanks to all at the Bishop ARC for their help in getting this one on the air!
NOTE: The Bishop repeater transmits PL only when there is something on the input, in other words, there is NO PL on the repeater's tail. If you are using an HT, you must have the Monitor ON (little speaker displayed on the front) in order to hear the tail come back after a "kerchunk".
Ridgecrest..On The Air!!
This is a low level machine covering the town of Ridgecrest, Ca and a short section of US395, HWY 178 and HWY 14 in the Indian Wells Valley. If a better mountaintop site in the area can be found, it will be moved. Freq and PL is the same as Reno. It has excellent coverage in the valley and North almost to Olancha! This is tied to the rest of the system via Echolink.
The Stockton repeater has been moved!!
It is now on Cedar Ridge at 4400' above Sonora.
Coverage South of Stockton will be much improved all the way to Madera and beyond!
Coverage along I-5 should be HT from north of Coalinga all the way to the 580 split!
There may be some rough spots along 99 north of Stockton and around Lodi, but the Sacramento repeater covers that area well.
Pictures to come later!
View from 9700' looking toward downtown Reno
Kinda hard to tell what you're looking at, but it is downtown Reno on the left and Sparks around the center.The Reno machine is on 927.0125 with PL of 88.5. Same as Ridgecrest. It has a panel antenna facing NE with about a 200° pattern.
The computer plots show the coverage should be all of Reno and most of Carson City, US395 from Reno to north of Topaz and East as far as Fallon! Can't wait for some reports out there!
This machine is in danger of being lost!
The building lease is not being renewed and it is in need of a good home!
If anyone has contacts on Fremont Peak or Mt. Toro, please contact us!
We have a valid link for the area now and it can be tied in!
The Link HUB
Looking East from the main link HUB's antenna with the Tahoe Repeater in the distance.
The Reno Repeater is over the mountains just to the left of the antenna.
The first link hub is located at about 4600'el West of Kyburz along HWY 50 and is nothing more than a point to tie the repeaters together. Site is up and running and ready for the other repeaters to be linked in! Later, this may also include another 900 rptr to cover the gaps between Sacramento and Tahoe.
We are planning on a second HUB near Patterson that will improve the link between the new Fresno location and the rest of the system. Hopefully in the spring!
2nd Link HUB
This is now active and being used for the Fresno machine.
It is at 4400' above Sonora and is LOS with a lot of the coastal range including Mt. Toro, Fremont Pk, Mt. San Benito and a lot of others!
In order to get around the PART-15 interference issues, we have decided to make ALL the NC9RS repeaters operate using the SAME input freq. of 902.0125. Each repeater will have a different PL. I know this is not standard offset, but we have no choice with the interference problems higher in the band. Because many people run radios that will not do the odd splits, I have put a "scanning" receiver on some of the repeaters so they will have both the 902.0125 input AND the standard 25 MHz offset input also. These repeaters have a "D" beside them in the list below. Unfortunately, the ISP interference will still be bad on the "standard" input.
NOTE: When possible, we try to duplicate channels to avoid having to reprogram radios whenever a new repeater comes up. As a couple examples, Ridgecrest and Reno are identical, Bishop and Sacramento are identical and Hollisterand Corning will be identical.
Special thanks to Bob, WA6JQV for the help with tons of "stuff" for the system!!! Also N6NMZ for the hub antenna!! Also the Bishop Amateur Radio Club for the use of their building and John WB6WQF for generous computer donations for Echolink!!
Thanks to Tom, N6MVT of the CARLA Radio system for the help with the Oakland site and other assistance!
This web page is designed for widescreen monitors at 1440 X 900.
View from the site at nearly 11,000' looking West to Northwest. Bishop is in the lower left and the snowstorm in the distance is over Lake Crowley and the Mammoth area.
It was June, and yes...it did snow on us. Temp was in the low 30s!
Stockton Repeater Moved!
The Stockton repeater has been moved to a better location above Sonora! The coverage South of Stockton is MUCH better! North Stockton and Lodi may suffer a bit, but along I-5 should MUCH better!
There are now 12 repeaters on the system! It takes at least ONE SECOND for them all to come up, so PLEASE. key the mic, wait one second, then begin talking. ALSO... wait for the beep, ANY BEEP, after someone is done speaking BEFORE you key up! If you don't, this can cause some links to drop and other people on the system may not hear you or "DOUBLE" with you.
ALSO, since there is an additional second or two delay on the Echolink repeaters, pause once in a while to see if anyone on the Echolink repeaters wants to chime in on a conversation!
There is NO need to wait for carriers to drop before speaking. .....Thanks
Why or what is the "Fab Five"?
Well, originally we thought it would be a neat idea to have FIVE repeaters in Northern California linked together....and the intent was to stop there. We didn't stop! We can't stop!! It's a disease!!
System Plans For This Summer!
..DONE..Install the Fremont Pk repeater to cover the Salinas/Monterey/Santa Cruz area.
....Start on the New Coos Bay, Oregon repeater and Allstar computer. Site has been established and repeater building will commence soon!
....Up to the Corning repeater to make repairs on the tower, add a new 24V solar system to run the site up to full power and possibly raise the antenna for better coverage in the area between Redding and Anderson.
....If time allows, install better filtering on the Reno repeater's link radio.
.DONE...Moving the Stockton repeater and Patterson HUB to a new location at cedar Ridge! This will greatly improve coverage in the San Joaquin Valley and I5 corridor! All "gaps" will be filled in and the new link location will give a LOS shot to the Salinas Repeater, which is currently NOT connected to the linked system! Final testing will be done soon and construction has started!
NC9RS now has a Yahoo Group! To join this group, go here..
We post ebay deals on 900 radio equip and lots of other info! Join today!
Due to the spammers, we now must moderate this group, so be patient! You will get approved!
These repeaters are usually connected to the system!
K5TRA-R 4 repeaters around Austin, TX
927.1125 (D432) Lago Vista, TX
927.1250 (103.5) SW Austin
927.1375 (131.8) N.Central Austin
927.1626 (151.4) S Austin
KW7HAM-R 2 repeaters near Portland
927.1375 (131.8) Larch Mountain, Wa.
927.1875 (151.4) Downtown Portland
WB0YRG-R 2 repeaters around Kansas City
927.1125 (186.2) Downtown Kansas City
927.4875 (131.8) S Kansas City
N6EX-R 2 WB6ZSU repeaters S California
927.1375 (D411) Newport Beach, CA
927.1500 (D411) Pasadena, CA
NB7C-L 2 repeaters W Idaho
927.1125 (D432) Boise, ID
927.1250 (103.5) Payette, ID
KA1EZH-R 1 repeater Attleboro, MA
927.7625 (PL 67)
Salinas Repeater Looking For Home!
The Salinas repeater is looking for a new home! The lease in the building is not being renewed, so if anyone has any connections to a good hilltop that would cover Salinas, Monterey, Santa Cruz, Watsonville etc, please let me know! Toro or a better spot on Fremont Pk would be great!
Very sad to announce the passing of W6OMF Larry Hogue USAF ret.
Larry was bigger than life and a great ham and excellent social coordinator for all area HAM's! I'm sure many have been to the "Grip n Grinns" at his place every Sept!
He will be missed!!
W6OMF & XYL K6SUE
What About This New "LMS" Service?
You may have read about the new LMS Location service that was just granted the OK to operate in the 900 band by the FCC. The portion of the band they listed was just one of the many channels they have, but recently, the company that is already doing this in the SF Bay area and Dallas decided to "mimic" an actual GPS signal which requires less bandwidth and they were also kind enough to "slide" their center freq down to stay below 927.000MHz! They did not have to do this, they did it on their own to be courteous to the amateur community! We have not heard if this is permanent yet as testing is ongoing, but thanks to NextNav for this attempt to avoid interference to the HAM's! We can only hope the other company is as "HAM Friendly"!
Ridgecrest Off Link
The Echolink computer for Ridgecrest died. A new Allstar computer is done and as soon as final approval is done, it will be installed and the repeater moved to a new site with elevation to cover most of the high desert!