BTX 417.5875 – 419.9875 MHz (in terms of the centres of the channels), paired with

MTX 407.5875 – 409.9875 MHz

BTX 420 – 424.975 MHz, paired with

MTX 410 – 414.975 MHz

BTX 423 – 423.75 MHz, paired with

MTX 413 – 413.75 MHz.

The channel centre frequencies (hereinafter called centre frequencies) use the following preferred formula. This preferred formula should be used whenever possible, but at least in new and re-farmed bands:

FCH = Band Edge – (Channel Spacing/2) + n × Channel Spacing

Where:

FCH = channel centre frequency

n = 1, 2, 3, … - channel number;

Band Edge is the lower edge of the allocated frequency band, i.e., 410 MHz.

For systems using a channel spacing of 200 kHz, the centre frequencies should be selected according to the preferred formula with an option to offset these centre frequencies by 100 kHz.

A sub-band can be simplex or duplex. The lower and upper parts of a duplex sub-band should be in the same allocated band.

The frequencies of emissions of base or repeater stations should be placed in the upper band and those of mobile stations in the lower band. The same positions of upper and lower bands should be selected for bordering/adjacent countries.

The channel centre frequency of a digital land mobile system using a channel spacing greater than 25 kHz may be selected in a way that the channel pertaining to the centre frequency with its nominal channel spacing falls entirely into a sub-band and does not overlap the guard band necessary around the edges of simplex sub-bands and the edges of the lower parts and upper parts of duplex sub-bands.

ECC Report 292 15, “based on the overall considerations,” recommends three options for broadband technologies in the band, illustrated in Figure 4.

ECC/DEC/ (19)0216, supported by ECC Report 28317, advises on the technical requirements for land mobile systems with the channel bandwidth of 1.25 MHz, 1.4 MHz, 3 MHz, and 5 MHz (for 410-430 MHz)

The following technical conditions shall be applied as an essential component necessary to ensure coexistence between neighbouring networks. Operators may agree, on a bilateral or multilateral basis, different technical parameters providing that they continue to comply with the technical conditions applicable for the protection of other services, applications, or networks and with their cross-border obligations.

The technical requirements are derived from ECC Report 28319.

ECC/DEC/ (19)0220 advises on the channel bandwidth and frequency offset for NB-IoT standalone operation for a standalone NB-IoT, as summarised in Table 1 and Table 2.

ECC/DEC/ (19)02}21 advises on the baseline channel bandwidth of 125 kHz to 250 kHz.

The 410-420 MHz / 420-430 MHz frequency range does not allow for enough available spectrum to provide for a stand-alone solution requiring 2 x 10 MHz for BB-PPDR as calculated in ECC Report 199 107.

The range can offer national flexibility, e.g., in the context of additional spectrum beside the 700 MHz range. The 1.4 MHz, 3 MHz and 5 MHz LTE FDD channelling arrangements could be implemented in the paired frequency arrangements in 410.0- 415.0 MHz / 420.0-425.0 MHz, 411.0-416.0 MHz / 421.0-426.0 MHz and 412.0- 417.0 MHz / 422.0-427.0 MHz.

The least restrictive technical conditions (LRTC) set out in this document are derived from ECC Report 283 22.

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