Communications/Radios
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Radios!
just quick notes to get this page started
there are N Baofang ?model? in the field. These are a mix of UV-5r, UV-5x4, and? something else Wendy and Greg are using.
- Wendy
- Michael
- Casey BTech UV-5x3
- Mitchell BTech UV-5x3
- Catherine has a mess of radios I guess
- Ken ( passed along by Casey & Mitchell ) BTech UV-5x3
- Greg
- Gate Don
- Road Don Baofeng VX-5R v2. re-programmed 6.22.2018
- ?Lisa?
- Mark & Sandy - Bofang BU-888. programmed 6.20.2018
- Chris - UV-5R, on loan from BCEC. not yet programmed
There are N Ham radio operators in the canyon
- Catherine
- Brendon Yeasu VX-6, Peter Chupity memory set
- Casey KA5WAX a Yeasu VX-6 ( MARS modified ), modified Peter Chupity memory set
- please add whoever else
and a few just outside the gate
- the lady on the other side of the creek up at the end of that dirt road? Linda?
- The people at the Running Horse Ranch
- the double dog people?
channels / frequencies
Note: "channels" can be different for regular walkie talkies - one manufacturer's labeled channel 2 may be another's labeled 12. Additionally there are a set of folks who remember CB radios and assume that 'channel 9' is for emergencies. This may be fine for CB radios but was never a convention for plain old walkie talkies. And each manufacturer's numbered Channel 9 was a different frequency...
Catherine and folks in the SC4 / San Mateo Coastside Emergency Corps developed a radio plan for Butano Canyon. The plan was seeded in the first set of radios by Mr. Peter Chupity ( sp ) and then cloned into others by Casey Dunn. This plan is intended for tactical emergency communications by a small set of people who have been practicing with each other. It wasn't originally intended to work as a general emergency broadcast ( which we need! see below) It is mostly a set of GRMS walkie talkie channels, with bonus channels such as weather.
- BU1 or BUTANO 1
- BU2 or BUTANO 2
- BU3 or BUTANO 3
- BU4 or BUTANO 4
We are adding
- BU0 or BUTANO 0
on a 'regular' walkie talkie channel this summer. This is the channel we'll use for mass communication / gathering info from folks with the older talkie talkies.
more info: http://www.sc4arc.org/ http://www.sc4arc.org/wp-content/uploads/2018/04/cecnewsletterspring2018v2--2-.pdf
Radio Check / Practice / range-testing
other radios
Some folks have FMRS/GRMS radios;regular walkie talkies such as you would get at a sporting goods store. The red boxes in this illustration show which Walkie-Talkie channels overlap with the BaoFang channels. Remember these channels were chosen specifically so that they would not be 'stepped on' by older, regular walkie-talkie communications in an emergency.
Yaesu
Brandon and Casey have Yaesu VX-6 radios, which without modification only receive on the defined GRMS channels. The next illustration shows channel settings for Butano. BU1-4 are the 'regular' channels for within the canyon. BU UP and BUPD are the Ham radio frequencies for reaching up to the CMD33/CMD31 repeater link up on John's redwoodtree on South Ranch Road.
( there is a modification called the MARS modification which allows them to transmit on other channels. ) Note; if you are programming these to match / copy the Butano channels you have to remember that PeterC set up the Bofang GRMS channels as simplex. infact he chose GRMS channels which are often reserved for GRMS repeaters and defined those for the canyon, for some reason. See the above chart.
Baofang BF-888
Mark and _____ have a pair of Baofang BF-888 walkie talkies. Casey programmed one so the last 4 ( of 16 ) channels match the current Butano GRMS channel plan. It seems to be a very inexpensive straightforward UHF radio. It does have a scanning capability.
Reaching the Outside World via Radio
an overview
As far as the San Mateo Coastside Emergency Corps folks are concerned, we're in Branch or Zone 3. The CERT co-ordinator for this area is Robert Smith ( [email protected] ) Branch 3 runs from Tunitas Creek to the Santa Cruz County line (La Honda, Loma Mar, Pescadero)
This is why you see all the 3s in the channel names around here. Those are 'our' channels.
The naming scheme has reasoning behind it. The CTL (Control) channels are intended to reach the Red Cross, the California Office of Emergency Services ( OES) , and the County Seat. The CMD channels are Command channels, and are where logistics, coordination and administrative conversations take place. The VTAC channels are tactical channels, intended to be used when emergency services are on-site, or when we don't want to bother folks 'up the ladder.' Specifically in Zone 3 the channels VTAC31-32 are assigned to La Honda, Loma Mar & Skylonda, Pescadero & San Gregoria ( VTAC33) , and the South Skyline Emergency Preparedness Organization ( SSEPO ) respectively.
practical matters
There is a Ham radio 'repeater' up on South Ranch Road on the North Ridge.
This is the CMD33 channel repeater, known in the Ham world as KD6KGE ( John Killeen ). Given the topology of the canyon that's the only one we're able to reach, and then not from everywhere. It's listening on the same frequency as CMD31, coming up next. It's also listening on 442.325 ( CMD33 442.325 + CTCSS 141.3 Pescadero net, linked to Cmd. 31 KD6KGE ) if you're a HAM and want to use that frequency. I don't know if that works from the Canyon.
So I know this is sorta confusing. KD6KGE up on South Ranch is doing double duty - or perhaps triple duty ( I haven't mentioned the Loma Mar repeater up there!) Let's just pretend we're talking to CMD31
This works becauseCMD33 has a 'private line' to CMD31 W6SCF, which has a great connection to the rest of Coastside. That radio then re-blasts the messages back into the canyon. W6SCF has a billion watts of power, it's set to 11 and transmits all over.
ToDo move the above somewhere else.
In the table 2 jumps up you can see BU UP highlighted. That's how Casey has programmed his Ham radio to provide an shortcut to getting out.
The two highlighted lines below contain the settings for accessing the Repeater.
This is why we use CMD31 as the Repeater's two way setting. There are definitions for the input (RX) and output (TX) frequencies.
CMD31D is the repeaters 'output frequency' - or Direct line. This is the frequency we listen to to hear whatever the repeater is repeating. These get used if one simply wants to talk on the channel everyone is listening to - or if you cannot reach the repeater's 'input' frequency.
Note: it's ok to listen in on these channels without a Ham license. It's probably a good idea to do so now and then to get used to fiddling with your radio. And if there is danger to life or limb, it's OK to broadcast out on these channels. It's not OK to use them casually without a license.
Note: Casey proposes duplicating the programming of all the Bofang walkie talkies to provide the BU UP / BU UPD shortcuts, just in case. Peter C left 'room' in the memory map of the radios for customization. It's OK to repeat channel definitions with differing 'labels' or names.
geek for later
https://aprs.fi/#!call=a%2FW6SCF-10&timerange=3600&tail=3600 ignore me
South San Mateo County document
http://k6mpn.org/training/resources/CERT11-0316UnderstandingRadioComm.pdf
==== FCC doc with older and current FRS / GRMS frequency definitions
http://transition.fcc.gov/Daily_Releases/Daily_Business/2017/db0522/FCC-17-57A1.pdf
page 12: original FRS / GRMS frequencies / channels page 22: current settings
the interesting part is to compare how they changed. If we want to accommodate the older radios, without specifying a cut-off-date, we'll have to chose an overlapping channel which survived the changes.
here then, from South County, is the overlap
we need to designate one of these frequencies as BU0 or Butano 0.
in communicating with our neighbors we'll have to use the lingo of 'channels' most likely, and the problem here is that manufacturers use differing nomenclature. Additionally people remember the CB radio days where everyone used 'Channel 9' for emergencies - and believe that on their walkie talkies whatever is labeled Channel 9 is the emergency channel.
Casey propose that we have a booth or something set up at the July 4th event where we explain about the BCEC group and what FRS ( regular old walkie-talkie ) channel / frequency we'll be listening to / giving updates on. People can wander back with their walkie talkies and we can double check the specifics of their radios.