SJC EMCOMM Freqs
SJC1 - 147.210 + 114.8 Stockton (Stockton Pri)
SJC2 - 146.655 - 100.0 Tracy (County Pri)
SJC3 - 145.210 - 100.0 Tracy (County B/up)
SJC4 - 147.090 + 114.8 Lodi (North Pri)
SJC5 - 146.985 - 100.0 Manteca
SJC6 - 147.165 + 107.2 SDARC
SJC7 - 147.015 + 114.8 Copperopolis
SJC8 - 147.105 + 94.8 Stockton
SJC9 - 146.895 - 114.8 Mt. Oso - Disabled
SJC10 - 444.400 + 114.8 Copperopolis
SJC11 - 444.325 + 94.8 Stockton (Stockton Pri)
SJC12 - 443.825 + 107.2 Mt. Oso
SJC13 - 444.575 + 107.2 Stockton
SJC14 - 444.850 + 114.8 127.3 Tracy 
SJC15 - 444.500 + 114.8 Stockton
LLNL - 146.775 - 100.0 Livermore


TAC1 - 146.550

TAC3 - 146.535
TAC4 - 146.430
TAC6 - 156.565
TAC7 - 146.595
TAC8 - 146.445
All simplex
Disclaimer

Opinions expressed are my own. I hope they are useful, but policies and procedures vary widely from one location and group to another.

What I describe may not work for you and may even be unsafe. Always follow your local policies and procedures!

Also, unless specifically mentioned, this site is about VHF/UHF operations and not HF, which is very often different for very good reasons.

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N5FDL/CEVOL Repeaters

Stockton: 147.210 + N5FDL and 444.500 + K6TRK Both PL 114.8 (linked)

Copperopolis/Gopher Ridge: 147.015 + and 444.400 + N5FDL UHF is Yaesu System Fusion analog and digital — tone on analog only

Mt. Oso: 146.895 - N5FDL and 443.825 + PL 107.2 (not linked)

Tracy: 444.850 + KB6EMK PL 127.3

Affiliated Repeaters

Bear Mtn.: 146.090 + and 444.250 + WB6ASU Both PL 114.8 (linked)

Mt. Delux: 145.210 - PL 100.0 WA6SEK (10mi S of Tracy)

All repeaters are open to all users.

Saturday
Dec032016

Choosing a PL tone for your repeater

I was recently asked how a new repeater operator should choose a PL tone for a new machine. My comments are specific to Northern California, your local situation may vary.

  1. No assigned tones — We do not assign PL tones here in Northern California. Some places, however, may coordinate both frequency and tone.
  2. Pick a tone that isn’t being used. A good way to test for conflicts is to connect a radio to the repeater antenna and transmit on the frequency you are seeking, changing the PL tone every time you transmit. This ought to find repeaters on your frequency as well as the tones used to access them.
  3. Do the same for the repeater pairs one above and one below your desired pair. Why risk interference when it can be avoided?
  4. Check with your coordinator to make sure you haven’t missed repeaters. In Northern California, you can do this online at the www.narcc.org website. I don’t trust the RF Finder database and app for any purpose. Just too inaccurate.
  5. Yes, you should transmit a tone and your users should use it — Sometimes VHF and even UHF signals propagate over long distances. When this happens, users will unexpectedly hear another repeater on “your” frequency. Transmitting a PL tone (the same as the tone used to access your repeater) goes a long way to solving this on-channel interference issue.

There is probably more to this than I have talked about. So leave questions or comments and I will answer them and then change this post to reflect the new information.

Tuesday
Nov152016

Recommended Radio: Baofeng UV-82C (for commercial)

New hams often ask which radio to purchase. By which they usually mean which inexpensive, Chinese-made “commie-talkie” should the purchase. There are dozens available under almost as many brand names. I encourage everyone to only purchase radios that their friends have been using for a while, as the “newest models” sometimes really aren’t and may be throwbacks with a new and deceptive model number. Online resellers are not always good at clearing out old inventory.

Which radio do I recommend?

To make life simple, there is only one model that I recommend. And the reason is simple: The Baofeng UV-82C is type-accepted by the FCC on commercial (non-ham) frequencies. ONLY the “C” model — for commercial — has Part 90 acceptance making them legal on commercial frequencies.

This means the radio will narrowband audio and operate on narrow channels. That makes it legal to use, with proper authorization, on local public safety channels. Provided they are not P25 or some other digital mode.

They are legal to use on business band frequencies, as well as the unlicensed MURS channels. I am actually uncertain about MURS type-acceptance but will investigate. I don’t think they are legal on GMRS or FRS, but I don’t think that stops many from operating illegally.

In fact, read this thread and you may wonder if any of the Chinese radios are really Part 90 legal.

Many of these radios are being purchased and used by public safety volunteers (including myself) for their do-gooder activities. I try to operate legally.

Note that if you order from the links below, that we get a tiny portion of your purchase price as a commission, used to operate this site and the repeaters. 

Friday
Nov042016

My elmer, Jim Haynie W5JBP, SK

Jim Haynie W5JBP (SK)I guess if you are a ham and you’re going to die, then age 73 is as good a time as any. Though I suppose 88 would be better. Hi!

Jim Haynie, former WB5JBP, ARRL President Emeritus, would see the humor in that, I think. Humor that lets me think good things about Jim, who was one of my elmers when I was first getting started in Amateur Radio back in Dallas, circa 1982.

Jim passed away this week after some sort of illness. Here is the ARRL announcement of this passing.

I alternately liked and disliked Jim, who worked hard at being a God-like presence in local ham circles and largely succeeded. There is no doubt he passionately cared about Amateur Radio and the community. And particularly about the Skywarn program.

Our differences were typical new ham/old ham conflicts, details of which have faded with time. I was, after all, an ADD, early-20’s radio newskid, who got into hamming in order to be part of the spring and fall tornado chases. He, meanwhile, was the #1 representative of The Establishment (aka Dallas ARC) and I hung with a different crowd.

I last saw him at Dayton about five years ago, and this was the first time in maybe 10 more years. I took the opportunity to thank Jim for all he’d done for me and his service to the ARRL and ham radio generally. I decided that I’d really always liked him. He told me that he swapped his original WB5JBP for vanity W5JBP and later wished he hadn’t.

Jim was a good guy who was licensed for more then 40 years, he was a mover, a smart guy, and from a generation when Amateur Radio was still a big deal. Remembering Jim, today I wish I had been born in 1945 instead of 1959. Jim had lots of ham fun that I missed.

73, Jim, and God bless. 

 

Wednesday
Nov022016

New San Joaquin County Repeater Map

Click on the image to download a photo map of San Joaquin County with the major ham repeaters, including approximate location and elevation, frequency, PL, site name and tactical channel ID. Might be handy to keep a copy at your operating position, in your car and other handy locations. Please notify me of any errors.
Wednesday
Apr062016

Tim Sivils K6TRK (SK)

I’m going to post an appreciation of Tim as soon as I can bring myself to think of him in the past tense. In the meantime, here is information about the arrangements. Tim was the person most responsible for my adventure in repeaters and the longtime 2-meter coordinator for Northern California. One of the most respected hams I know and a man I will deeply miss.

For those of you who would like to pay your last respects to Mr. Sivils, here is the information.


Both the visitation and graveside service is open to those who wish to attend.

Visitation will be held at the Cherokee Funeral Home, 831 Industrial Way, Lodi, California on Thursday, April 14th from 2:00PM to 8:00PM.

The graveside service will be held on Friday, April 15th, 2:15 pm at Cherokee Memorial Park, Hwy 99 & Harney Ln.

Reception information will be provided, once arrangements have been made.

Scott Hensley - KB6UOO
President - NARCC