Santa Fe Nat'l Forest freq

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nd5y

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See posts #11 & 12 of
 

kc5igh

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In the database, 170.050 NPS Dome. Could someone expound on what 'NPS Dome' is?

To the best of my knowledge, "NPS Dome" refers to the National Park Service's repeater on the "Dome" mountain near Bandelier National Monument. That site provides pretty good coverage in very mountainous terrain.
 

beerzkool

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Hello,

Dome NPS is a lookout/repeater site located on St. Peter's Dome. Here is a document that is on my website that is addressed in my signature line. It will give you a good history of the Dome Lookout as well as many others in the Santa Fe National Forest.



The Dome Fire of 1996 cleared out all the timber in the entire region making the lookout very easy to spot. Do to fires around Los Alamos National Lab, the lookout is maintained as a repeater site, but not as a lookout. Cerro Pelado is the lookout that is used for visual spots.

Many agencies use the Dome repeater site. Bandelier National Monument, Cibola National Forest, and Santa Fe National Forest. My website below lists those frequencies.

Here are two pictures from 2006. Been a long time since I have hiked up there.

7447374474
 

ecps92

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Cibola National Forest also has a repeater on Dome Mountain
Lat 35.757222
Lon -106.370278

To the best of my knowledge, "NPS Dome" refers to the National Park Service's repeater on the "Dome" mountain near Bandelier National Monument. That site provides pretty good coverage in very mountainous terrain.
 

milcom_chaser

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See posts #11 & 12 of
This is incorrect.
 

milcom_chaser

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Hello,

Dome NPS is a lookout/repeater site located on St. Peter's Dome. Here is a document that is on my website that is addressed in my signature line. It will give you a good history of the Dome Lookout as well as many others in the Santa Fe National Forest.



The Dome Fire of 1996 cleared out all the timber in the entire region making the lookout very easy to spot. Do to fires around Los Alamos National Lab, the lookout is maintained as a repeater site, but not as a lookout. Cerro Pelado is the lookout that is used for visual spots.

Many agencies use the Dome repeater site. Bandelier National Monument, Cibola National Forest, and Santa Fe National Forest. My website below lists those frequencies.

Here are two pictures from 2006. Been a long time since I have hiked up there.

View attachment 74473View attachment 74474
That road to Dome!! Nice website btw.
 

Paysonscanner

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Cibola National Forest also has a repeater on Dome Mountain
Lat 35.757222
Lon -106.370278


I was confused as to where the Cibola "Dome" repeater was in relation to the "Dome Repeater" that is the location of the Bandalier NM repeater. Here is the Cibola map I was using,

2016 R3 Cibola NF Repeater Map.JPG
By the looks of this map "Dome" looked quite a ways east of Los Alamos/Bandalier. When I put the Santa Fe and Cibola together on this map,

USFS NM.gif

As you can see, even though the Cibola folks did not show any of the Santa Fe NF on the Cibola Map, comparing it with the statewide map of national forests shows the "Dome" repeater for the Cibola is located near Bandalier NM. I guess I forgot that the Sandia Mtn. range is west of Santa Fe.
 

Paysonscanner

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I'm wondering what year this info was printed. The Santa Fe NF does not have a repeater on Dome, but the National Park Service does. Someone earlier mentioned that the Santa Fe NF had a repeater and the above list says no on that. The Forest Service does have a repeater there, but it is for the Cibola NF.

Ooopsy, I see the map has a 2016 date and I have a 2016 frequency guide for the SW GACC. I assume the map here was drawn up after the 2016 guide was printed, so these pages must be from a 2017 or maybe a 2018 guide?
 

beerzkool

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There are several directional antennas on the lookout. They point toward Cerro Pelado, Encino, Sandia Mountain, Santa Fe Baldy, and the LANL EOC. I am not an expert on radios or antennas, but it seems the lookout is used as a relay of some type for other SFNF lookouts. I don't know if that make it a "repeater" or not.
 

Paysonscanner

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I'm not an expert on radio either, but know a little bit due to the men in my life (dad and late husband) who were both hams. I got my license when I was in my college years. The directional antennas are called "beam antennas." They might be for links, although their element lengths of the antennas on the right (right picture) seem to suggest VHF. The shorter element antennas on the left look like UHF antennas, but their elements seem real short. I can't remember if the elements are placed vertically that means the signal is horizontally polarized and horizontal antennas mean a vertically polarized signal. I got the two mixed up all my life. The link antennas (UHF federal band) antennas I saw while with dad and my husband had elements in a vertical position or maybe I'm forgetting those as well. Another possible explanation is that Dome is a remote base for some system, maybe the NPS or the Santa Fe NF, but I know little of the topography of the area. A remote base is in a location where it can "see" or TX/RX all the repeaters in the system.

Somebody who is better at this than both of us combined may be able to enlighten us. I never went beyond the technician class license, but hey, when I got my it Morse code was still required. Not that it helps me figure out those antennas in this case.
 

Paysonscanner

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Maybe you can post all the other dispatch center maps and lists for the Southwest GACC. Then I can copy those and update my hubby's books. I'm more interested in Arizona, as that is where I live now.
 

milcom_chaser

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I'm not an expert on radio either, but know a little bit due to the men in my life (dad and late husband) who were both hams. I got my license when I was in my college years. The directional antennas are called "beam antennas." They might be for links, although their element lengths of the antennas on the right (right picture) seem to suggest VHF. The shorter element antennas on the left look like UHF antennas, but their elements seem real short. I can't remember if the elements are placed vertically that means the signal is horizontally polarized and horizontal antennas mean a vertically polarized signal. I got the two mixed up all my life. The link antennas (UHF federal band) antennas I saw while with dad and my husband had elements in a vertical position or maybe I'm forgetting those as well. Another possible explanation is that Dome is a remote base for some system, maybe the NPS or the Santa Fe NF, but I know little of the topography of the area. A remote base is in a location where it can "see" or TX/RX all the repeaters in the system.

Somebody who is better at this than both of us combined may be able to enlighten us. I never went beyond the technician class license, but hey, when I got my it Morse code was still required. Not that it helps me figure out those antennas in this case.
If the elements are vertical, think vertical polarization. The same applies if the elements are horizontal, think horizontal polarization.
 

Paysonscanner

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If the elements are vertical, think vertical polarization. The same applies if the elements are horizontal, think horizontal polarization.

Thanks. I'm not really all that bright when it comes to electronics. I remember that two planes are involved, the E and the ? planes? I know that one polarization is better for HF comms than the other, but I can't remember which, I think horizontal. Vertical polarization results in a narrow width signal that is very high, relative to the surface of the earth, correct? That is why vertical polarization is used for links, especially at higher frequencies. My mind is much better at biology, which is helpful for becoming and being an RN.
 

bc780l

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Just a reminder / caution: USFS has a habit of publishing the P25 NAC as decimal vs. hex, as shown in this table. Therefore, the dual-mode repeaters at Cerro Pelado and Abrigo have hex NACs of:
0659 Decimal = $293 Hex
0512 Decimal = $200 Hex
1204 Decimal = $4B4 Hex

Just a note to remember when programming.

Also note that "100" and "123" should really read "100.0" and "123.0" for the CTCSS tones. These 2019 spreadsheets were rushed, apparently with poor formatting and have, as well, dropped the still-existing repeater transmit tones, which are, I believe, still the same as in the 2016 spreadsheets.
 

Paysonscanner

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Just a reminder / caution: USFS has a habit of publishing the P25 NAC as decimal vs. hex, as shown in this table. Therefore, the dual-mode repeaters at Cerro Pelado and Abrigo have hex NACs of:
0659 Decimal = $293 Hex
0512 Decimal = $200 Hex
1204 Decimal = $4B4 Hex

Just a note to remember when programming.

Also note that "100" and "123" should really read "100.0" and "123.0" for the CTCSS tones. These 2019 spreadsheets were rushed, apparently with poor formatting and have, as well, dropped the still-existing repeater transmit tones, which are, I believe, still the same as in the 2016 spreadsheets.

Just to interject a couple of details. The Cerro Pelado and Abrigo repeaters are not shown in my 2016 Southwest GACC comm guide. I don't think these repeaters existed at the time. These are not U.S. Forest Service repeaters, they are National Park Service repeaters. They did not exist in 2016 as the jurisdiction of the Valles Caldera National Preserve was given to the National Park Service in October, 2015 and they probably did not have repeaters built in 2016. If they did they likely went on the air after the 2016 guide was published. Cerro Pelado lookout is located just south of the southern boundary of Valles Caldera NP and Abrigo is located inside the caldera, on one of the many "resurgent dome" peaks. Cerro Pelado might be able to cover some of Bandelier NM, but I don't know that. Abrigo appears to provide no coverage for Bandelier.

In many places the NPS has tied all their repeaters in one park together in . In some cases they all share the same input frequency (using a voter), but each have a separate output frequency. That way no matter what repeater you are hearing you hear the traffic on all the repeaters. I wonder if they have tied Dome, Abrigo and Cerro Pelado together? It would make sense, I wouldn't think Valles Caldera would have a lot of radio traffic and doing so would allow a common dispatcher. I wish I could camp there for awhile to find out. In the meantime (its bound to be a long while!) so local listeners need to figure this out. I think people in Santa Fe and maybe even Albuquerque would be able to hear all these rpts. I have some other New Mexico DB entries to submit, so I will submit these too.
 

beerzkool

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From my local listening in Los Alamos, Bandelier uses the "Dome" and "Mesa" repeaters, and the Valles Caldera uses the "Cerro Pelado" and "Cerro Abrigo" repeaters.

As for a "dispatch" The LEO in Bandelier calls into Los Alamos Police Department on the "Dome Repeater". Other calls about snakes on trails and dehydrated visitors are called into the Visitor Center on the "Mesa Repeater".

Fairly sure Valles Caldera Preserve does not have a "dispatch". I have never heard their LEOs make a call, but I assume they call into Sandoval County SO.

It is important to remember that the documents submitted are for "Initial Attack" only. The NPS and FS probably have other channels to use.
 
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