RMNP west side nets

[Wayne]

Planning a trip to Rocky Mountain National Park and am pre-programming area frequencies in my PSR-500. I know the east side nets are using mixed mode (pl 110.9/NAC 455). Are the west side nets still using only analog (no P 25 listed in database)? Logic would suggest they are using digital too. If so, anyone snagged the NAC for the west side nets?

 

[ScannerSK]

I'm not sure how up to date the following is however it lists the frequencies and NACs, etc. for Rocky Mountain National Park about 3/4 of the way down the page:

Colorado Federal (Colorado) Scanner Frequencies and Radio Frequency Reference

Scanner Frequencies and Radio Frequency Reference for Colorado Federal (Colorado)

www.radioreference.com

 

[ecps92]

Rocky Mountain National Park (CO) - The RadioReference Wiki

wiki.radioreference.com

Planning a trip to Rocky Mountain National Park and am pre-programming area frequencies in my PSR-500. I know the east side nets are using mixed mode (pl 110.9/NAC 455). Are the west side nets still using only analog (no P 25 listed in database)? Logic would suggest they are using digital too. If so, anyone snagged the NAC for the west side nets?

 

[Wayne]

Neither the database or wiki contains the NAC for the west side repeaters. I was hoping some one within "earshot" could answer the question.

 

[ecps92]

Correct, as no one has reported/confirmed them, however did you see the note about how to convert a PL to NAC
that is the format the NPS has been using for some Parks when moving from Analog to P25

The other option is to program your scanner for "Auto" and you can be the first one to report the info for the RRDB and Wiki

Neither the database or wiki contains the NAC for the west side repeaters. I was hoping some one within "earshot" could answer the question.

 

[Wayne]

Yes, I saw the note regarding pl conversion. To assume the new NAC is based on that would be conjecture. If no-one reports an update prior to my visit, I will certainly submit my findings to the db.

 

[ecps92]

if I recall it was Actually from a RR thread, but alas the OP never submitted nor edited for the Wiki

Yes, I saw the note regarding pl conversion. To assume the new NAC is based on that would be conjecture. If no-one reports an update prior to my visit, I will certainly submit my findings to the db.

 

[es93546]

if I recall it was Actually from a RR thread, but alas the OP never submitted nor edited for the Wiki

I was going to post that the conversion from the decimal to hexidecimal was not clear at all. I tried to run a few math formulas in my head to covert 1109 to 455 and they did not work, that is, no whole numbers. Won't decimal work in most scanners anyway? If so, I don't understand why hexidecimal is needed anyway. If you only have to drop the decimal from the standard analog tone, it's easier to remember. I once saw a frequency guide that was formatted with decimal only. My guess is they were trying to simplify the operation of the radio.

I asked why the hexicecimal was important once before and the answer (my interpretation) was that it was more complicated and therefore better. I have been in some situations where simplification was a life and death issue.

 

[ecps92]

1109 in Decimal = 455h in Hex [note the lower case h infers HEX]
an excellent chart is found under the CAP Wiki, for those not familiar with the windows Calculator
and how to change it from Standard to Programmer modes.

Now the Chart only is valid for agencies who have adopted that format when converting from PL to NAC
others such as FBI, DEA went for the simple route of 156.7 became $156 and 167.9 became $167
YMMV - depending on which side of the M-I-S-S-I-P-P-I you are on

Civil Air Patrol - The RadioReference Wiki

wiki.radioreference.com

I was going to post that the conversion from the decimal to hexidecimal was not clear at all. I tried to run a few math formulas in my head to covert 1109 to 455 and they did not work, that is, no whole numbers. Won't decimal work in most scanners anyway? If so, I don't understand why hexidecimal is needed anyway. If you only have to drop the decimal from the standard analog tone, it's easier to remember. I once saw a frequency guide that was formatted with decimal only. My guess is they were trying to simplify the operation of the radio.

I asked why the hexicecimal was important once before and the answer (my interpretation) was that it was more complicated and therefore better. I have been in some situations where simplification was a life and death issue.

 

[Spirit]

So if RMNP uses both analog and digital, do I put the Nac in or do I put it on auto and it will pick up which ever one they are on?

 

[Wayne]

In "auto" mode, your scanner should receive both analog and digital transmissions. The downside to using auto mode is the case where there is interference or internal generated noise (birdie) that will cause your scanner to hang.

 

[ecps92]

or if you are attempting to log or store the audio for play back, many folks may want to actually have the PL or NAC to validate actual use
I would enter them twice. Todays Scanners barely will run out of memory

In "auto" mode, your scanner should receive both analog and digital transmissions. The downside to using auto mode is the case where there is interference or internal generated noise (birdie) that will cause your scanner to hang.

 

[Spirit]

Another question, on the NAC P25, what should the mode be set on? FM, NFM for RMNP? I don't have a mode that would be blank. I did put the Nac in seperate. Should Nac P25 go in Conventional Objects or on the Trunking Objects? This is for a Pro 106/197.

 

[Wayne]

It would be a conventional object. I would use NFM.