6.2 Reference sensitivity level

3GPP45.005GSM/EDGE Radio transmission and receptionTS

6.2.1 Circuit-switched channels

i) The reference sensitivity performance in terms of frame erasure, bit error, or residual bit error rates (whichever appropriate) is specified in table 1, according to the type of channel and the propagation condition. . The performance requirements for GSM 400 and GSM 700 systems are as for GSM 900 in table 1, except that the GSM 400 MS speed is doubled from that of GSM 900, e.g. TU50 becomes TU100, and the GSM 700 MS speed is increased by a factor of 1.2, e.g. TU50 becomes TU60.

NOTE: For conformance testing purposes using requirements at double speed is considered sufficient to verify MS behaviour at realistic speeds. This applies for packet channels and reference interference performance as well.

The actual sensitivity level is defined as the input level for which this performance is met. The actual sensitivity level shall be less than a specified limit, called the reference sensitivity level. The reference sensitivity level for GMSK modulated signals shall be:

Table 6.2-1a Reference sensitivity level for MS

GSM 400 MS	for GSM 400 small MS	‑102 dBm
	for other GSM 400 MS	‑104 dBm
GSM 900 MS	for GSM 900 small MS	‑102 dBm
	for other GSM 900 MS	‑104 dBm
ER-GSM 900 MS	for ER-GSM 900 small MS	‑102 dBm
	for otherER-GSM 900 MS	‑104 dBm
GSM 850 MS	for GSM 850 small MS	‑102 dBm
	for other GSM 850 MS	‑104 dBm
GSM 700 MS	for GSM 700 small MS	‑102 dBm
	for other GSM 700 MS	‑104 dBm
DCS 1 800 MS	for DCS 1 800 class 1 or class 2 MS	‑100 / ‑102 dBm *
	for DCS 1 800 class 3 MS	‑102 dBm
PCS 1 900 MS	for PCS 1 900 class 1 or class 2 MS	‑102 dBm
	for other PCS 1 900 MS	‑104 dBm

Table 6.2-1b Reference sensitivity level for BTS

GSM 400 BTS	for normal BTS	‑104 dBm
GSM 900 BTS, ER-GSM 900 BTS, GSM 700 BTS, GSM 850 BTS M) MXM 850	for normal BTS	‑104 dBm
	for micro BTS M1	‑97 dBm
	for micro BTS M2	‑92 dBm
	for micro BTS M3	‑87 dBm
	for pico BTS P1	‑88 dBm
DCS 1 800 BTS	for normal BTS	‑104 dBm
	for micro BTS M1	‑102 dBm
	for micro BTS M2	‑97 dBm
	for micro BTS M3	‑92 dBm
	for pico BTS P1	‑95 dBm
PCS 1 900 BTS MXM 1900	for normal BTS	‑104 dBm
	for micro BTS M1	‑102 dBm
	for micro BTS M2	‑97 dBm
	for micro BTS M3	‑92 dBm
	for pico BTS P1	‑95 dBm
GSM 400, GSM 700, T-GSM 810, GSM 850, GSM 900, DCS 1 800, PCS 1 900	for Wide Area multicarrier BTS	-104 dBm M)
	for Medium Range multicarrier BTS	-98 dBm M)
	for Local Area multicarrier BTS	-90 dBm M)
NOTE: The values marked by M) apply to BTS declared as Multistandard radio Base Station for respective frequency band

* For DCS 1 800 class 1 and class 2 MS, the ‑102 dBm level shall apply for the reference sensitivity performance as specified in table 1 for the normal conditions defined in Annex D and ‑100 dBm level shall be used to determine all other MS performances.

ii) For GMSK modulated speech channels for wideband AMR, and for 8-PSK modulated speech channels for AMR, associated control channels and inband signalling, the minimum input signal level for which the reference performance shall be met is specified in table 1f and 1g respectively for normal BTS, according to the type of channel and the propagation condition. The reference performance shall be:

Table 6.2-2 Reference performance for Wideband-AMR and 8-PSK modulated AMR channels

‑	for speech channels (TCH/WFSy)	FER	:	£ 1%
‑	for speech channels (O-TCH/AHSy, O-TCH/WFSy, O-TCH/WHSy)	FER	:	£ 1%
‑	for fast associated control channels (O-FACCH/F, O-FACCH/H)	FER	:	£ 5%
–	for inband signalling channels (TCH/WFS-INB, O-TCH/AHS-INB, O-TCH/WFS-INB, O-TCH/WHS-INB)	FER	:	£ 0,5%
–	for EVSIDUR and EVRFR	FER	:	£ 1%

where y denotes the codec rate. All other requirements in tables 1f and 1g shall be fulfilled at this input level for reference performance.

For other equipment than normal BTS, the levels shall be corrected by the values in table 6.2-4. Furthermore, for all classes of MS supporting 8-PSK speech channels, an additional +2 dB adjustment applies for 8-PSK modulated speech channels.

For Enhanced circuit-switched channels (ECSD), the minimum input signal level for which the reference performance shall be met is specified in table 1d and 1e, according to the modulation, type of channel and the propagation condition. The performance requirements for GSM 400 and GSM 700 systems are as for GSM 900 in table 1d and 1e, except that the GSM 400 MS speed is doubled from that of GSM 900, e.g. TU50 becomes TU100, and the GSM 700 MS speed is increased by a factor of 1.2, e.g. TU50 becomes TU60.

The reference performance shall be:

Table 6.2-3 Reference performance for Enhanced circuit-switched channels

‑	for data channels (E-TCH/F), transparent services (T)	:	BER £ 0,1%
‑	for data channels (E-TCH/F), non-transparent services (NT))	:	BLER £ 10%
‑	for fast associated control channel (E-FACCH)	:	FER £ 5%

where BLER refers to radio block (data block of 20 ms length, corresponding to 1368 coded bits, to be interleaved over a number of burst according to 3GPP TS 45.003).

The levels are given for normal BTS and MS separately. For other equipment, the levels shall be corrected by the values in the table 6.2-4.

6.2.1a Reference performance in VAMOS mode

The reference performance in VAMOS Mode, shall be

– For full rate speech channels (TCH/FS, TCH/AFSx, TCH/EFS, TCH/WFSx ) FER:  1 %

– For half rate speech channels (TCH/HS, TCH/AHSx) FER:  1 %

– For signalling channels (FACCH/F, FACCH/H, SACCH) FER:  5 %

For speech channels in VAMOS Mode, and their associated control channels, the minimum input signal level for which the reference performance shall be met is specified in table 1s, 1t, 1u, 1v, 1x and 1y according to the propagation condition and type of equipment. The levels are given for VAMOS I MS, VAMOS II MS, VAMOS III MS and normal BTS separately. For other BTS equipment, the levels in table 1v shall be corrected by the values in table 6.2-4. The performance requirements for GSM 400 and GSM 700 systems are as for GSM 900 in table 1s for VAMOS I MS, 1t and 1u for VAMOS II MS, 1x and 1y for VAMOS III MS and 1v for BTS, except that the GSM 400 MS speed is doubled from that of GSM 900, e.g. TU50 becomes TU100, and the GSM 700 MS speed is increased by a factor of 1.2, e.g. TU50 becomes TU60.

In addition for speech channels the residual class Ib BER and residual class II BER performance shall not exceed the specified values in table 1s, 1t, 1u, 1x, 1y and 1v at the corresponding signal level in dBm.

The reference performance for the repeated associated control channel performance in VAMOS mode shall be according to subclause 6.2.4.

A VAMOS III MS shall fulfil the requirements in table 1x and 1y for the antenna correlation and antenna gain imbalance setup defined in annex Q.7.

6.2.2 Packet-switched channels

i) For packet switched channels, the minimum input signal levels for which the reference performance shall be met are captured in different performance tables, according to table 6.2-3a.

Table 6.2-3a: Performance tables for packet switched channels

normal symbol rate, Basic Transmit-Time-Interval (BTTI) and no Piggy-backed ACK/NACK reporting (PAN)	Table 1a (GMSK) Table 1b, 1c (8-PSK, convolutional code) Table 1k (16-QAM, convolutional code) Table 1l (8-PSK, 16-QAM, 32-QAM turbo code)
higher symbol rate, Basic Transmit-Time-Interval (BTTI) and no Piggy-backed ACK/NACK reporting (PAN)	Table 1m, 1n (QPSK, 16-QAM or 32-QAM)
normal symbol rate and higher symbol rate, BTTI and RTTI, when Piggy-backed ACK/NACK reporting (PAN) is used	Table 1o, 1p
PAN performance	Table 1q, 1r
BTS input signals with wide pulse shaping filter in the case of higher symbol rate	Tables 1p and 1q
EC operation, BTTI, no PAN1	Table 1z, 1aa (GMSK) Table 1ab, 1ac (8-PSK)
NOTE 1: The performance tables for BTS include EC-PDTCH channels using MCS-1 and MCS-5 in EC operation, EC-PDTCH/2TS channels using MCS-1 in EC operation and a note referring to EC-PDTCH channels using other MCS in EC operation (MCS-2 to MCS-4 and MCS-6 to MCS-9). The performance tables for MS include EC-PDTCH channels using MCS-1 in EC operation and a note referring to EC-PDTCH channels using other MCS in EC operation (MCS-2 to MCS-4) and include for EC-PDTCH channels using MCS-5 to MCS-9 the same requirements as for EGPRS.

For Reduced Transmit-Time-Interval (RTTI) the minimum performance requirements are the same as for Basic Transmit-Time-Interval (BTTI) on a static channel. The performance requirements for GSM 400 and GSM 700 systems are as for GSM 900, except that the GSM 400 MS speed is doubled from that of GSM 900, e.g. TU50 becomes TU100, and the GSM 700 MS speed is increased by a factor of 1.2, e.g. TU50 becomes TU60.

For GMSK modulated signals, the levels are given for normal BTS. For QPSK, 8-PSK, 16-QAM and 32-QAM modulated signals, the required levels are given for normal BTS and MS separately. When in EC operation the requirements shall be met in the downlink with randomly altered USF in each of the blind physical layer transmissions, assuming one user per timeslot. In case that Overlaid CDMA subchannels are multiplexed on the same time slot in coverage classes CC2, CC3, CC4 and CC5, the requirements in table 1ad shall be met, when the model of frequency offsets defined in Annex R is applied.

The levels shall be corrected by the values in table 6.2-4, except for EC-channels in tables 1aa and 1ac where no correction factor is applied for EC-GSM-IoT mobile stations.

Table 6.2-4 Correction factor of performance requirements for different equipments

MS (GMSK modulated signals)
for DCS 1 800 power class 1, power class 2 or power class 6 MS	+2/+4 dB1
for DCS 1 800 power class 3 MS	+2 dB
for GSM 400 small MS, GSM 900 small MS, ER-GSM 900 small MS, GSM 850 small MS and GSM 700 small MS	+2 dB
for other GSM 400, GSM 900 MS, ER-GSM 900, GSM 850 MS and GSM 700 MS	0 dB
for PCS 1900 power class 1, power class 2 or power class 6 MS	+2 dB
for other PCS 1900 MS	0 dB
MS (QPSK, 8-PSK, 16-QAM and 32-QAM modulated signals)
for GSM 400, GSM 900, ER-GSM 900, GSM 850 and GSM 700 small MS	0 dB
for other GSM 400, GSM 900, ER-GSM 900, GSM 850 and GSM 700 MS	-2 dB
for DCS 1 800 and PCS 1900 power class 1, power class 2 or power class 6 MS	0 dB
for other DCS 1 800 and PCS 1900 MS	-2 dB
BTS
for normal BTS	0 dB
for GSM 900, ER-GSM 900, GSM 850, MXM 850 and GSM 700 micro BTS M1	+7 dB
for GSM 900, ER-GSM 900, GSM 850, MXM 850 and GSM 700 micro BTS M2	+12 dB
for GSM 900, ER-GSM 900, GSM 850, MXM 850 and GSM 700 micro BTS M3	+17 dB
for GSM 900, ER-GSM 900, GSM 850, MXM 850 and GSM 700 pico BTS P1	+16 dB
for DCS 1 800, PCS 1900 and MXM 1900 micro BTS M1	+2 dB
for DCS 1 800, PCS 1900 and MXM 1900 micro BTS M2	+7 dB
for DCS 1 800, PCS 1900 and MXM 1900 micro BTS M3	+12 dB
for DCS 1 800, PCS 1900 and MXM 1900 pico BTS P1	+9 dB
for Wide Area multicarrier BTS	0 dB
for Medium Range multicarrier BTS	+6 dB
for Local Area multicarrier BTS	+14 dB
NOTE1: For DCS 1 800 power class 1, power class 2 and power class 6 MS, a correction offset of +2dB shall apply for the reference sensitivity performance as specified in table 1a for the normal conditions defined in Annex D and an offset of +4 dB shall be used to determine all other MS performances.

The reference performance shall be according to Table 6.2-5:

Table 6.2-5 Reference performance for Packet channels

Logical channel	Requirement
Packet Data Channels (PDCH)2	BLER £ 10% unless otherwise stated
Uplink State Flags (USF)	BLER £ 1%
Packet Random Access Channels (PRACH)	BLER £ 15%
Piggy-backed ACK/NACK report (PAN)	PAN error rate £ 5%
Extended Coverage Packet Data Traffic Channels Uplink (EC-PDTCH/U, EC-PDTCH/U/2TS)3	BLER £ 50%
Extended Coverage Packet Data Traffic Channels Downlink (EC-PDTCH/D, EC-PDTCH/D/2TS)4	BLER £ 20%
Extended Coverage Random Access Channels (EC-RACH)	BLER £ 20%
Extended Coverage Control Channels (EC-CCCH/D1, EC-PACCH, EC-PACCH/2TS and EC‑BCCH)	BLER £ 10%
Extended Coverage Synchronization Channel (EC-SCH)	BLER £ 10%
Extended Coverage Paging Indication Channel (EC-PICH) in combination with Extended Coverage Paging Channel (EC-PCH)5	Combined error rate ≤ [11]%
NOTE1: EC-AGCH and EC-PCH NOTE 2: This includes MCS in EC operation, other than MCS-1, for EC-PDTCH/U, other than and MCS-5. NOTE 3: This applies to MCS-1, MCS-1’ and MCS-5 in EC operation. NOTE 4 : This applies to MCS-1 in EC operation. NOTE 5: This applies to MS receiving EC-PICH and EC-PCH in CC3 or CC4 under sensitivity conditions specified in table 1aa for EC-CCCH/D/16 (CC3) or EC-CCCH/D/32 (CC4), respectively, on condition that a matching paging for the MS, i.e. with matching IMSI or P-TMSI, is sent on the EC-PCH.

where BLER is the Block Error Rate, referring to all erroneously decoded data blocks including any headers, stealing flags, parity bits as well as any implicit information in the training sequence, or any downlink block discrimination error between EC-PDTCH and EC-PACCH or between EC-PDTCH/2TS and EC-PACCH/2TS..

For PDCH the BLER refers to RLC blocks, and hence there can be up to two block errors per 20ms radio block for EGPRS MCS7, MCS8, MCS9, UAS-7, UAS-8, UAS-9, UBS-7, UBS-8, DAS-8, DAS-9, DAS-10, DBS-7 and DBS-8, up to three block errors per radio block for UAS-10, UAS-11, UBS-9, UBS-10, DAS-11, DAS-12, DBS-9 and DBS-10, and up to four block errors per radio block for UBS-11, UBS-12, DBS-11 and DBS-12. The BLER refers to the initial transmission of RLC blocks, i.e. the channel decoding without incremental redundancy. For USF, the BLER only refers to the USF value.

For EC-PDTCH, EC-PDTCH/2TS, EC-PACCH and EC-PACCH/2TS channels in downlink, the BLER shall be evaluated with random USF in each of the blind physical layer transmissions.

For EC-PICH, the combined error rate with EC-PCH refers separately to each of the following error cases:

– On condition that an MS is commanded on the EC-PICH to wake up, that it misses a matching paging for it on the EC-PCH for its paging group.

– On condition that an MS is commanded on the EC-PICH to go to sleep, that it attempts (e.g. based on a EC-PICH misdetection) to receive the paging on the EC-PCH for its paging group.

NOTE: For verifying the performance requirements for EC-PICH, the sending of a page response may be evaluated for both error cases.

ii) If BTTI USF mode is used when sending downlink data blocks in RTTI configuration and different modulations are used in the two data blocks sent in a 20 ms block period, the USF will be sent with mixed modulation. In this case, the performance of the mixed modulation USF shall meet the less stringent requirement of the two modulations for static propagation conditions according to:

Table 6.2-6 USF performance in mixed modulation

GMSK	USF/MCS-1 to 4	(table 1a)
8PSK	USF/MCS5 to 9	(table 1c)
16QAM (EGPRS2-A)	USF/DAS-8 to 9	(table 1l)
32QAM (EGPRS2-A)	USF/DAS-10 to 12	(table 1l)
QPSK (EGPRS2-B)	USF/DBS-5 to 6	(table 1n)
16QAM (EGPRS2-B)	USF/DBS-7 to 9	(table 1n)
32QAM (EGPRS2-B)	USF/DBS-10 to 12	(table 1n)

For PDCH channels, the performance requirements for some modulation and coding schemes and propagation conditions are specified at higher BLER. Where applicable, the BLER value noted in the respective performance requirement table applies.

6.2.3 Flexible Layer One

For Flexible Layer One (FLO), the minimum input signal level for which the reference performance shall be met is specified in table 1h, according to the type of reference measurement FLO configurations (or TFCs) and the propagation condition. The reference TFCs are specified in Annex K. The performance requirements for GSM 400 and GSM 700 systems are as for GSM 900 in tables 1h, except that the GSM 400 MS speed is doubled from that of GSM 900, e.g. TU50 becomes TU100, and the GSM 700 MS speed is increased by a factor of 1.2, e.g. TU50 becomes TU60.

The reference performance shall be:

Table 6.2-7 Reference performance for FLO channels

‑	for reference TFCs 2,3,4 and 5	BLER £ 1%
‑	for reference TFC 1	BLER £ 5%
‑	for reference TFCs 6 and 7	BLER £ 10%

where BLER is the Block Error Rate, referring to all erroneously decoded transport blocks (except those without CRC protection), In all the radio packets for which the TFCI, or any implicit information in the training sequence, is decoded incorrectly, all the transport blocks (with CRC protection) will be counted in error.

The reference performance levels for FLO shall be corrected according to the values in the table 6.2-4, but with an additional correction of +2 dB on 8-PSK channels for all MS.

6.2.4 Repeated associated control channel performance

For Repeated Downlink FACCH and Repeated SACCH (see 3GPP TS 44.006), the minimum input signal level for which the reference performance shall be met is specified in table 1i, 1s, 1t, 1v and 1x, according to the propagation condition and type of equipment. The performance requirements for GSM 400 and GSM 700 systems are as for GSM 900 in table 1i, 1s, 1t, 1v and 1x, except that the GSM 400 MS speed is doubled from that of GSM 900, e.g. TU50 becomes TU100, and the GSM 700 MS speed is increased by a factor of 1.2, e.g. TU50 becomes TU60.

The reference performance for Repeated Downlink FACCH and Repeated SACCH shall be FER £ 5%. When calculating FER, a FACCH frame and its repetition or a SACCH frame and its repetition respectively, shall be counted as one frame and a frame erasure shall be counted when neither the FACCH frame nor its repetition or neither the SACCH frame nor its repetition respectively, could be successfully decoded.

The reference performance levels for Repeated Downlink FACCH and Repeated SACCH in table 1i and 1v shall be corrected according to the values in the table 6.2-4.

6.2.4a Extended Coverage control channel and data channel performance for EC-GSM-IoT

For EC-channels in Coverage Classes higher than CC1 (i.e. CC2, CC3 and CC4) blind physical layer transmissions are used (EC-PDTCH, EC-PDTCH/2TS, EC-RACH, EC-SCH, EC-PACCH, EC-PACCH/2TS, EC-BCCH, EC-AGCH, EC-PCH). For uplink EC-channels in Coverage Class CC5 blind physical layer transmissions are used (2 TS EC-RACH, EC-PDTCH/U and EC-PACCH/U).

The minimum input signal level for which the reference performance shall be met is specified in table 1z, 1aa, 1ab, 1ac and 1ad, according to the propagation condition and type of equipment, assuming the input signal fulfils the coherency requirements in subclause 4.6.3, where applicable.

6.2.5 Enhanced MS receiver performance

i) For a MS indicating support for Downlink Advanced Receiver Performance – phase II Capability (see 3GPP TS 24.008), the minimum input signal level for which the reference performance shall be met is specified in table 1j, according to the propagation condition and type of equipment. The performance requirements for GSM 400 and GSM 700 systems are as for GSM 900 in table 1j, except that the GSM 400 MS speed is doubled from that of GSM 900, e.g. TU50 becomes TU100, and the GSM 700 MS speed is increased by a factor of 1.2, e.g. TU50 becomes TU60.

The reference performance for Downlink Advanced Receiver Performance – phase II, shall be

– For speech channels (TCH/FS, TCH/AFSx, TCH/AHSx) FER:  1 %

– For packet switched channels (PDTCH) BLER:  10 %

In addition for speech channels the residual class Ib BER and residual class II BER performance shall not exceed the specified values in table 1j at the corresponding signal level in dBm.

The reference sensitivity performance specified above for Downlink Advanced Receiver Performance – phase II need not be met by an MS when it is in a Downlink Dual Carrier configuration (see 3GPP TS 43.064).

ii) For a MS indicating support for TIGHTER Capability (see 3GPP TS 24.008), the minimum input signal levels for which the reference performance shall be met are specified in table 1w, according to the propagation condition. The performance requirements for GSM 400 and GSM 700 systems are as for GSM 900 in table 1w, except that the GSM 400 MS speed is doubled from that of GSM 900, e.g. TU50 becomes TU100, and the GSM 700 MS speed is increased by a factor of 1.2, e.g. TU50 becomes TU60.

The reference performance for Tightened Link Level Performance (TIGHTER) specified in table 1w, shall be

– For speech channels (TCH/FS, TCH/HS, TCH/EFS, TCH/AFSx, FER, TCH/AHSx, TCH/WFSx):  1 %

– For signalling channels (SCH, FACCH/F, FACCH/H, SDCCH) FER:  5 %

– For packet switched channels (PDTCH) BLER:  10 % unless otherwise stated

In addition for speech channels the residual class Ib BER and residual class II BER performance shall not exceed the specified values in table 1w at the corresponding signal level in dBm. The reference sensitivity level in section 6.2.1 shall be applied for TIGHTER MS.

6.2.6 Additional performance conditions

i) The reference sensitivity performance specified above need not be met in the following cases:

– for BTS if the received level on either of the two adjacent timeslots to the wanted exceed the reference sensitivity level for circuit-switched, GMSK-modulated channels by more than 50 dB;

– for MS at the static channel, if the received level on either of the two adjacent timeslots to the wanted exceed the wanted timeslot reference sensitivity level or input level for reference performance, whichever applicable by more than 20 dB;

– for MS on a multislot configuration, if the received level on any of the timeslots belonging to the same multislot configuration as the wanted time slot, exceed the wanted time slot by more than 6 dB.

The interfering adjacent time slots shall be static with valid GSM GMSK signals in all cases. The adjacent timeslot levels, specified above apply to 8-PSK, AQPSK, QPSK, 16-QAM and 32-QAM modulated signals as well.

ii) The requirements for micro-BTS for 8-PSK, QPSK, 16-QAM and 32-QAM modulated input signals in the tables above, assume the same maximum output power in any modulation. For other maximum output power levels, the sensitivity is adjusted accordingly.

iii) The pico-BTS 900 MHz, 1800 MHz, 1900 MHz and 850 MHz and Local Area multicarrier BTS shall meet the reference sensitivity performance specified for the static channel. The only other channel that is specified is the TI5 propagation condition and this need only be tested for the no FH case. The performance requirement for GSM 900, GSM 850, GSM 700, DCS 1 800, PCS 1900, MXM 850 and MXM 1900 pico-BTS and Local Area multicarrier BTS with the TI5 propagation condition is the same as the TU50 performance requirement for GSM 900. The level of input signal at which this requirement shall be met is 3dB above the level specified above in this sub-clause (in combination with Table 1a, 1b, 1k, 1p and 1q for packet service) , for GMSK modulated signals, and 3 dB for 8-PSK modulated signals. For 16-QAM, 32-QAM and QPSK the level of input signal at which the requirement shall be met is 3 dB above the level specified above in this sub-clause (in combination with Table 1k, 1m, 1p and 1q for packet service). In case of higher symbol rate, tables 1p and 1q apply for input signals using wide and narrow pulse shaping filter. For Local Area multicarrier BTS and speech channels in VAMOS Mode and their associated control channels, the level of input signal at which the requirement shall be met is 5 dB above the level specified in tables 6.2-1b and 6.2-4 (in combination with Table 1v).

iv) In case of DLMC configuration, the reference sensitivity performance specified above for TU50 no FH applies. Sensitivity requirements for other propagation conditions are not specified.