The Utah VHF Society
The Intermountain
Intertie
The Intermountain Intertie is a more-or-less informal collection of
repeaters located in northern Utah/Southwestern Wyoming, many of which
(but not all) are supported in part by the VHF Society. This
system
is a hub-and-spoke system, with the Hidden Peak (the so-called
"Snowbird")
repeater 147.18 (+) repeater acting as one of the hubs. If you
are
interested in seeing pictures of this repeater and reading more
about it, go to the Hidden
Peak Repeater page. There is also a page for the 146.86 Medicine
Butte repeater. To look at a growing collection of
pictures
and info about other repeaters in the Intermountain Intertie, go to the
Other
Repeaters of the Intermountain Intertie page.
Configuration: Normally, this system is always linked
to
other repeaters/systems in the network that collectively cover much of
central and southern Idaho, southwestern Wyoming, northern Utah,
western
and southwestern Utah, northwestern Arizona, and northeastern Nevada.
Etiquette: Because of this extensive geographical
coverage,
please be courteous of others that may be wanting to use the system,
frequently
leaving time for breaks, and limiting QSOs to no more than 10 minutes
during
the heavier usage times - and it is uncouth to monopolize the system at
any
time. Keep in mind that it takes a good portion of a second for
all
of the various links to 'turn around' so be sure to pause for several
seconds
when you allow for breaks, and key up for about a second before you say
your first word.
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An up-to-date map of the
Intermountain Intertie
This map shows those repeaters that are normally linked
together. For a higher-quality
(200k)
image, click here.
For a printer-friendly version, click here.
These maps are current as of July, 2008.
See below for specific operational details
The repeaters directly linked into this system:
The Hidden Peak Repeater (at the top of the Snowbird tram, at 11,000
feet) has several links. The 'hub' portion 'talks' directly to
the
following repeaters:
- 147.180 + Tone: 100.0 Hz. Hidden
Peak (East of Salt Lake City, Utah, at the top of the Snowbird
Tram) - Coverage into Park City, Heber, Duchesne, Coalville, parts of
northeastern
Utah, southern slopes of the Uinta mountains, and parts of southwest
Wyoming.
Note: This repeater has spotty coverage in populated areas of the
Salt Lake and Utah valleys. This repeater is aligned with the
Utah
VHF Society and is the northern Utah hub of the Intertie. If you
are interested in seeing pictures of this this repeater and
reading
more about it, go to the Hidden
Peak Repeater page.
- 147.120 + Tone: 100.0 Hz. Farnsworth
Peak
(southwest of Salt Lake City, Utah) - Coverage into the greater Wasatch
Front area (i.e. Salt Lake, Provo, Ogden) as well as to the west along
Interstate 80 into Wendover, Nevada.
- 147.020 + Tone: 100.0 Hz. Bear
Lake (Laketown) - Covers Bear Lake and its communities, and
various
portions of northeastern Utah, southeastern Idaho, and southwest
Wyoming.
- 146.860 - Tone: 100.0 Hz.
Evanston
(Medicine Butte,
near Evanston, Wyoming) - Covers southwest Wyoming, the northern slopes
of the Uinta mountains, parts of northeastern Utah. This repeater
is aligned with the Utah VHF Society - go here
to see the Medicine Butte Repeater Page.
- 146.670 - Tone: 100.0 Hz. Aspen
Mtn
(south of
Rock Springs, Wyoming) - Covers the Green River/Rock Springs area and
I-80
as far west as Little America.
Please
note: The following repeaters share the same frequency as
two other Intertie
repeaters, so
please refrain from using any of these three repeaters in areas
better-serviced by a more "local" intertie repeater. Also be
aware that the Mount Harrison repeater also shares 145.270 as well.
- 145.270 - Tone: 100.0 Hz. Scott's
Hill (approx. 2 miles south of Brighton, Utah.)
Coverage
is nearly identical to that of the Hidden Peak repeater, except
that it has somewhat better coverage in Park City, Deer Valley, and in
the Evanston/Kemmerer, Wyoming areas.
- 145.270 - Tone:
103.5 Hz Levan
Peak
(central Utah, near Levan.) The
primary coverage area of this repeater is along the Interstate 15
corridor from Santaquin to south of Fillmore. It covers large
portions
Juab and Sanpete counties plus portions of Utah, Tooele, and Millard
counties.
The link to the south:
Until fairly recently, the link connecting Northern and Southwestern
Utah was done on the 222 MHz band, linking Frisco Peak and Hidden
Peak.
While the equipment is still present at both sites, the linking is now
done on 70cm between Frisco Peak and the 147.12 site on Farnsworth
Peak.
Some of the repeaters linked on this path are aligned with the Utah
VHF Society, while some others are voluntarily linked into the system
by
their respective organizations and owners. Through the southern
link,
the following repeaters are also connected:
- Southwest Utah:
- 146.940 - Tone:
100.0 Hz. Frisco Peak (Milford,
Utah)
This repeater covers Delta, Cedar City, and other parts of southwestern
Utah and eastern Nevada. This repeater is aligned with the Utah
VHF
Society. Photographs of this and a few other sites may be found here.
- 146.800 - Tone: 100.0 Hz. Blowhard
Peak
( Near Cedar Breaks National Monument) - Covers parts of southwestern
Utah
such as Cedar City, Kanab, some of eastern and southeastern
Nevada,
and portions of northwestern Arizona.
- 146.820 - Tone: 100.0 Hz. St
George
(Utah
Hill, west of St George) - Covers St. George, parts of southwestern
Utah,
southeastern Nevada, and northwestern Arizona. This repeater is
aligned
with the Utah VHF Society.
- Northern Arizona:
- 147.300 - Tone: 100.0 Hz. Jacob
Lake
(south
of Kanab, Utah.) - Covers Kanab, Fredonia, North Rim of Grand Canyon,
toward
Page, AZ.
- Southeast Nevada:
- 146.880 - Tone: 100.0 Hz. Las
Vegas
(Mt.
Potosi, SW of Las Vegas) - Covers Las Vegas, southeastern Nevada.
- Links into California: There are UHF remote
bases in
California that control their systems to bring up the 146.880 Mt Potosi
repeater. These California Remote bases are only controlled by them and
2 meter control back to California is not available to users of the
Intermountain
Intertie or the Mt Potosi Repeater group.
The link to the north:
There is an additional link that connects to the north into a
similar
system operated in Idaho. The link to the north into Idaho
connects
these repeaters:
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Current status of the Intermountain
Intertie:
Hidden Peak:
The Hidden Peak (a.k.a. "Snowbird" repeater is currently
offline due to damage to the controller: Repairs are currently
underway.
Links to the north:
Since the installation of the War Eagle repeater on 145.230,
coverage into Boise is once again available.
Links to the south:
While the link down to Frisco Peak is operational, it goes no
further south than Blowhard this due to equipment problems at Frisco
and/or
Blowhard.
The Levan Peak repeater is now online, but pending the
installation of additional gear at Farnsworth, its connectivity is only
through Frisco Peak.
Connectivity into Montana has changed.
Please refer
to the Montana Repeater Link
Association
web site for further information.
IRLP Connectivity: Direct connectivity to IRLP
Node #3660 is currently NOT available. Please
read this
for more information.
Note: While many of the participating systems
are usually
linked into the Intermountain intertie, they may be occasionally
disconnected
due to local requirements.
For more information, send email to John, K7JL (at the link
below)
and he will forward your request to the appropriate party.
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- Idaho: Note: Connectivity into the Boise
is likely nonexistant at present, owing to the deactivation of the
Merritt Mountain link site.
- 146.850 - Tone: 100.0 Hz. Jumpoff
Peak (west of Howe - Serves Idaho Falls.) This is the
Idaho
hub for the intertie. For pictures and other info. about this
repeater, go here.
- 146.430 Simplex remote, Carrier Squelch, near Malad
Pass (west of Malad, Idaho.)
- 145.270 - Tone: 100.0 Hz. Mount
Harrison (southern Idaho) For pictures and other
info.
about this repeater, go here.
- 145.230 - Tone: 100.0 Hz. Sawtelle
Peak (near West Yellowstone) Go here
for some pictures and more info about this repeater.
- 145.230 - Tone: 100.0 Hz. War
Eagle Mountain (near Silver City) This site provides
coverage
into the Boise area as well as much of southwestern Idaho. Yes,
it uses the same frequency and tone as the Sawtelle Peak repeater.
- Montana - Please note that the link to the
Intermountain
Intertie Montana is through Idaho (refer to map) so
connectivity
to Montana is dependent on the status of portions of the Idaho
link.
Also, the links into Montana have changed - for more information, visit
the Montana Repeater Link
Association
web site. Please direct any "Montana-related" questions to the
email
address(es) at that site.
Occasionally, connectivity into Oregon (and other areas)
is possible. This can happen when operators of those other
systems
remotely link into an intertie-connected repeater. Note:
Such operations are not usually under direct control of the
operator(s)
of an intertie repeater.
There are other repeaters that may be linked to the above
repeaters
on a full or part-time basis. Information on other repeaters will
be posted if/when it becomes available.
"Who maintains all of this?"
A system this extensive cannot practically be maintained by just one
person. Suffice it to say, there are a few key people who do most
of the work to keep this system operational. To list those people
here would be unfair, as it is a group effort and someone would
undoubtedly
be overlooked.
If you wish to help maintain this system, please join the Utah VHF
Society
(the address is given on the home
page) or the appropriate local repeater group (for those outside of
Utah.) If you have any questions about this system, feel free to ask John
Lloyd, K7JL. Even if he isn't in charge of the repeater(s)
that
you are wondering about (i.e. the Southern Utah, Idaho or Montana
repeaters),
he can probably put you in touch with those who are
.
Current Intermountain
Intertie
projects:
The following is an incomplete list of projects
currently underway having to do with the maintenance and enhancement of
the Intermountain Intertie.
- Hidden Peak (a.k.a. "Snowbird"):
This repeater returned to the air as of June 21, 2008 and is operating
normally. In October, 2007, the main repeater controller
was damaged by an electrical transient of unknown origin. Despite
several layers
of protection, it appears as though some sort of electrical transient
hit this site, firing off the "crowbar" protectors on the main power
supplies and destroying the CPU and some interface chips in the main
controller
- Levan Peak: Work
at this site is complete. As
of October 15, 2007, this repeater - and its links - were completely
operational. On October 30, 2007, the subaudible tone frequency
of the 2 meter repeater was changed to 103.5 Hz to minimize the
effects of overlap of this and the Scotts Hill repeater which is on the
same frequency. As of
November 4, 2007, the installation of radios at Farnsworth has allowed
Levan Peak to be linked directly with Farnsworth, providing
connectivity between it and the rest of the system. Levan Peak is
now the primary communications path for tying the Northern and Southern
Utah Intertie repeaters together.
- War Eagle Mountain:
Vance, WA7FDR, completed installation of a repeater and link on War
Eagle Mountain, near Silver City, Idaho. This site, south and
west of Boise, restores coverage of the Intertie into the Boise area,
as well as much of Southwestern Idaho.
- Malad Pass:
This link is working normally after replacing the duplexer on
the link to Hidden Peak.
- Farnsworth Peak:
This site is working well
now: A new
base station style GE Mastr II link radio was built up and exchanged
with the mobile version that was in operation. This link radio talks to
the Frisco Peak site in southern Utah and its installation eliminated
the Video buzz
or "Hum" in the audio. We are still planning to change the link
frequency to Snowbird to eliminate the "hollow" audio sound
heard on the 147.12 repeater. As of November 4, 2007, the link to
Levan Peak is operational, providing an alternate means of linking to
Frisco Peak and the southern Utah Intertie repeaters.
- Scotts Hill (Brighton):
As of mid-June, 2008, this site is off: It will be returned
to service as soon as possible. It seems as though one of the
main power supplies had failed - either on its own, or due to a
power-line transient. The result of this was damage to the
repeater's controller, which has been sent back to its manufacturer for
repair.
- Medicine Butte (about 10
miles northeast of Evanston, Wyoming): This site
is working
well since both link antennas were replaced and the radio equipment was
retuned. The link to Rock Springs is back in operation.
- Bear Lake: In
June, 2008 this repeater was taken off the air for maintenance:
It should return to the air soon. In June of 2007, Heliax going
to the link antenna was replaced
and the
desense noise was eliminated.
If YOU are interested in helping out with any of
these
projects, please contact John Lloyd,
K7JL.
Some additional information may be found at the Rainbow
Canyons Amateur Radio Club page describing this system. This
site also contains pictures
of some of the sites. Also, see the Other
Repeaters of the Intermountain Intertie page.
Questions, updates, or comments pertaining to this web page may
be
directed to: uvhfs@utahvhfs.org
This page was last updated on 20080725
Return to the Utah VHF
Society
homepage.