DMR on Itinerant Frequencies?

[W5DMH]

I am interested in using DMR over Itinerant frequencies for our commercial business. Can I license an itinerant frequency for DMR emissions?
Can I use a hotspot and push the DMR over the internet to another location (within the state I am licensed for)?

 

[buddrousa]

Not sure but you are licensed for a radius around you radio so if you want to use a second location you would have to license that location and each additional location you plan to use.
There are a few here that can answer your question better than I.

 

[kf8yk]

DMR is permitted on itinerant Part 90 licenses, just request the appropriate emission designator. Note that 90.212 requires station identification to be sent in analog.

Linking shouldn't be a problem, there's a bunch of regulations pertaining to interconnection to the PSTN (phone patches) but linking by private wireline/RoIP is done all the time.

 

[buddrousa]

Yes but 2 sites lets just say 100 miles apart still have to be licensed
What I am referring to is 2 SIMPLEX RADIOS operating with 2 areas of service linked together requiring to be listed or licensed

 

[kf8yk]

For normal site based Part 90 license sure you would need each location listed on the license. But the OP clearly asked about an itinerant license which by definition covers a large area of operation often statewide or nationwide. One itinerant license covers simultaneous use at multiple locations.

As long as both locations are in the itinerant area of operation there's no problem and no need to obtain a second license.

 

[buddrousa]

Good to know was always told you had to list or license each site.

 

[W5DMH]

DMR is permitted on itinerant Part 90 licenses, just request the appropriate emission designator. Note that 90.212 requires station identification to be sent in analog.

Linking shouldn't be a problem, there's a bunch of regulations pertaining to interconnection to the PSTN (phone patches) but linking by private wireline/RoIP is done all the time.

I'm wondering if there are any radios out there that auto ID in morse every 15 after a tx until no tx ...thought I read somewhere that if you use auto with morse it is supposed to be at 40% of the tx power ?

 

[ecps92]

Generally that would be a Repeater and depending on the program panel, the owner/programmer can set the Morse at different intervals.
Many in my area, had gone with 45-60 min's, but I've never heard of the 40% power and in the ole analog days, No way to do that

I'm wondering if there are any radios out there that auto ID in morse every 15 after a tx until no tx ...thought I read somewhere that if you use auto with morse it is supposed to be at 40% of the tx power ?

 

[W5DMH]

§ 90.425 Station identification.
(1) The signal output of the automatic identification equipment shall be connected to the transmitter at the microphone input or any other manufacturer-provided signal input terminal and shall be adjusted to produce 40 percent ±10 percent of the maximum permissible modulation or deviation level. This adjustment shall be performed when all other modulating signals are absent.

Generally that would be a Repeater and depending on the program panel, the owner/programmer can set the Morse at different intervals.
Many in my area, had gone with 45-60 min's, but I've never heard of the 40% power and in the ole analog days, No way to do that

 

[gtaman]

With a nationwide itinerant we run anything we want. P25,DMR, NXDN you name it. We have most of the emission designators.

 

[W5DMH]

How do you manage the analog Station ID requirement when operating a digital mode?

With a nationwide itinerant we run anything we want. P25,DMR, NXDN you name it. We have most of the emission designators.

 

[kf8yk]

I'm wondering if there are any radios out there that auto ID in morse every 15 after a tx until no tx ...thought I read somewhere that if you use auto with morse it is supposed to be at 40% of the tx power ?

You could meet the ID requirements by just programming a second channel as analog & ID'ing in voice. Best practice for itinerant operation is to have the ability to monitor a channel in CSQ to check for other users before commencing operations anyway.

If you were using a DMR mobile as a gateway radio it might be possible to add an external ID board and use the channel steering lines on the accessory connector to change the channel to analog during ID.

I've never heard of any rule for IDing at reduced power, I think your confusing reduced power with the 40% modulation rule. Modulated CW ID's need to be sent at least 40% of maximum modulation. For narrowband FM that's 1 kHz of deviation. Check 90.425 for the full set of ID requirements.

 

[ecps92]

that is why it sounded odd, this is Modulation not Power

§ 90.425 Station identification.
(1) The signal output of the automatic identification equipment shall be connected to the transmitter at the microphone input or any other manufacturer-provided signal input terminal and shall be adjusted to produce 40 percent ±10 percent of the maximum permissible modulation or deviation level. This adjustment shall be performed when all other modulating signals are absent.

 

[gtaman]

How do you manage the analog Station ID requirement when operating a digital mode?

I can tell you 99% of simplex users don’t identify. We don’t either.
Never have and never will.

 

[RFI-EMI-GUY]

I am interested in using DMR over Itinerant frequencies for our commercial business. Can I license an itinerant frequency for DMR emissions?
Can I use a hotspot and push the DMR over the internet to another location (within the state I am licensed for)?

1) Itinerant usage implies that the station will be located at varied locations and varied times. 2) There are no part 90 certified hot spots. The closest thing might be the Hytera portable repeater. 3) Using FCC certified equipment should solve the station ID issue.

 

[KG7PBS]

With a nationwide itinerant we run anything we want. P25,DMR, NXDN you name it. We have most of the emission designators.

Any Encryption?

 

[gtaman]

Any Encryption?

We do. Mostly DES XL just because keyloaders are cheap and it serves its purpose well. RC4 on DMR. I have used AES and VSELP voice as well.

 

[KG7PBS]

We do. Mostly DES XL just because keyloaders are cheap and it serves its purpose well. RC4 on DMR. I have used AES and VSELP voice as well.

Bro the VSELP alone is ENCRYPTION. that’s an awesome setup. I have P25 AES/ADP. And same on DMR.

 

[RFI-EMI-GUY]

Any Encryption?

Yup; applying for it on low band as we speak in the olden time mode CVSD.

20K0F1E * Encrypted Quantized Voice (Motorola DVP, DES, DES-XL 27.4900​ FB2I 27.4900​ MOI 35.0400​ FB2I 35.0400​ MOI 43.0400​ FB2I 43.0400​ MOI

 

[KG7PBS]

Yup; applying for it on low band as we speak in the olden time mode CVSD.

20K0F1E * Encrypted Quantized Voice (Motorola DVP, DES, DES-XL 27.4900​ FB2I 27.4900​ MOI 35.0400​ FB2I 35.0400​ MOI 43.0400​ FB2I 43.0400​ MOI

Thanks awesome