Notional receiver performance level. The instrument defines a notional receiver performance level applicable to 700 MHz band receivers in respect of unwanted signals from transmitters operated under apparatus licences (clause 1(1)). The term "notional" signals that the standard is a benchmark for assessment and co‑ordination, rather than a specification of any individual piece of installed equipment. The document explicitly ties this notional performance to a reference sensitivity level (clause 1(2)), and to performance measures of adjacent channel selectivity, intermodulation response rejection, and blocking.

Receiver sensitivity reference points. Clause 1(2) supplies two practical reference sensitivity levels, used throughout the instrument as the baseline to which unwanted signal levels are compared. For receivers with occupied bandwidth less than 20 MHz, the reference sensitivity is -96 dBm measured within a 5 MHz rectangular bandwidth that falls within the licence frequency band. For receivers with an occupied bandwidth equal to or greater than 20 MHz, the reference sensitivity is -89 dBm measured within a 20 MHz rectangular bandwidth. These sensitivity reference figures are the anchors for the relative dB values given in the adjacent channel, intermodulation, and blocking tables.

Radiofrequency selectivity curve. Clause 1(3) gives a notional radiofrequency selectivity function, between the antenna and the antenna connector, expressed as a piecewise formula in dB depending on the FreqOffset. The function is:

• 2 + 70·log10[1 + (2·FreqOffset/5)^1.5] dB for FreqOffset ≤ 2.5 MHz;
• 2 + 70·log10[1 + (2·FreqOffset/5)^2] dB for 2.5 MHz < FreqOffset ≤ 9 MHz;
• 82 dB for FreqOffset > 9 MHz.

FreqOffset is defined as the smallest frequency difference between either the upper or lower limits of the licence frequency band under which the receiver operates and any frequency outside that band (clause 1(3) end note). The selectivity curve formalises how rejection improves with increasing separation from the licence band edge.

Relative versus absolute measures. The adjacent channel selectivity and intermodulation numbers are expressed as relative dB values, explicitly described as the ratio between the received unwanted signal power at the relevant offset and the receiver's sensitivity level (clause 2, clause 3 notes). Blocking figures in clause 4(1) are expressed as dB above the sensitivity level for defined 700 MHz sub‑ranges, and clause 4(2) sets an absolute blocking level of total mean power -15 dBm for the 1 MHz to 12,750 MHz range excluding the specified 700 MHz subranges.

Measurement reference point. Clause 1(4) specifies that comparisons of sensitivity and unwanted signal are defined at the antenna connector port of the receiver unit. That means the notional receiver performance takes the entire receiving system into account, including any external filters, and requires assessment at the antenna connector.

Register values for antenna/feed losses. Clause 5 instructs that antenna gain and feeder loss values recorded for a radiocommunications receiver in the Register should be used in co‑ordination. The Register therefore becomes the source for those link budget parameters when applying the instrument.

Compatibility metric for fixed receivers. Section labelled (section 14) provides a distinct numerical test for fixed receivers: maximum unwanted signal level of -108 dBm per 5 MHz, not exceeded for more than 5% of any 1 hour period, and log scaling to apply for other bandwidths. This is an absolute unwanted‑power metric used for compatibility assessment with other radiocommunications services.

Reference to 3GPP. The instrument’s numerical values are cited as coming from 3GPP TS 38.104 V17.5.0 (2022-04), indicating reliance on a recognised industry technical standard for the performance figures (clauses 2 and 3 sources, and other source notes).

Spectrum licence holders in the 700 MHz band. The instrument is framed around receivers "operated under a spectrum licence" in the 700 MHz band (clause 1(2) and elsewhere). Those licensees, when seeking co‑ordination or protection, will have the notional receiver performance applied as the baseline for assessing unwanted signals. The Register entries for a licensed receiver’s antenna gain and feeder loss are called up by clause 5, so spectrum licence holders who maintain receiver entries in the Register will affect co‑ordination outcomes through the accuracy of those entries.

Apparatus licence operators and transmitter planners. The notional levels are described in relation to "an unwanted signal from a radiocommunications transmitter operated under an apparatus licence" (clause 1(1)). That places the principal practical obligation on operators of transmitters to consider whether their transmissions, after antenna gain and feeder loss and propagation, will exceed the notional unwanted levels at the licence‑holder’s antenna connector. Engineers who plan and certify transmitters will need to use the instrument’s numbers when performing interference assessments and co‑existence studies.

Equipment manufacturers and test laboratories. The instrument uses measurement reference points and calls out 3GPP TS 38.104 as its source for the values. Manufacturers of user equipment, base stations, and filters will find the notional sensitivity, selectivity and rejection figures relevant to lab test methods and product specifications, and laboratories doing compliance testing will need to align their test configurations with the measurement reference point at the antenna connector.

Spectrum planners, co‑ordination consultants and technical advisers. Professionals who perform interference analysis and co‑ordination will use the formulas and tables to calculate allowable unwanted powers, blocking margins, and to make a case for or against co‑existence of services.

Registry administrators. Clause 5 makes the Register (the statutory database for radiocommunications equipment and licences) the definitive source of antenna gain and feeder loss values for co‑ordination. Administrators responsible for maintaining accurate Register entries affect how co‑ordination calculations resolve.

Regulatory decision makers and dispute adjudicators. The instrument provides numerical baselines that are likely to be used by any decision maker charged with determining compatibility, issuing directions, or resolving interference disputes. It therefore affects the evidentiary standard and the reference points used in administrative determinations.

Consultants and auditors working with critical infrastructure or fixed links. Clause (section 14) sets a concrete absolute unwanted signal level (-108 dBm per 5 MHz) and temporal criterion (not more than 5% of any 1 hour period) for fixed receivers. Parties operating fixed networks that require high availability will treat that metric as a planning parameter.

Legal advisors and compliance teams. While the instrument does not state penalties, it establishes technical criteria that can be invoked under licence conditions or in interference proceedings. Lawyers and compliance officers must translate these technical baselines into practical obligations for their clients and document the calculations used in co‑ordination.

In short, anyone who designs, operates, certifies, or adjudicates in relation to radiocommunications in the 700 MHz band will be affected because the instrument supplies the notional technical benchmarks against which unwanted signals and compatibility are judged.

Duties defined by the instrument. The instrument itself primarily defines technical benchmarks and measurement points; it does not contain express administrative penalties or detailed behavioural obligations. The textual duties it imposes are the following:

• Use the notional receiver performance measures in assessing unwanted signals from apparatus‑licence transmitters, because the instrument explicitly frames the notional level "in relation to an unwanted signal from a radiocommunications transmitter operated under an apparatus licence" (clause 1(1)).
• Compare sensitivity and unwanted signal levels at the antenna connector port of the receiver unit (clause 1(4)), which imposes a requirement to perform co‑ordination and measurement calculations at that reference point rather than at some other point in the system.
• Use the antenna gain and feeder loss values recorded in the Register for co‑ordination (clause 5), which makes the Register the obligatory source for those parameters when applying the instrument.

Rights or entitlements created by the instrument. The instrument establishes measurable baselines that confer practical entitlements, in the following senses:

• Spectrum licence holders may rely on the notional receiver levels as the benchmark for protection and compatibility assessments; the instrument supplies the values to be used in those assessments (clause 1 and subsequent clauses).
• Apparatus licence operators have clarity about the notional receiver against which their transmitters will be evaluated, enabling them to design emissions and siting to meet co‑existence expectations.

Measurement and evidence standard. By specifying the antenna connector as the comparison point (clause 1(4)) and by citing 3GPP TS 38.104 as the source for tables (clauses 2 and 3), the instrument implicitly sets an evidentiary standard for test set‑ups and measurement methods. Parties preparing technical evidence in a co‑ordination or interference proceeding will need to align their measurements with those references.

Temporal and bandwidth scaling. For fixed receivers, clause (section 14) establishes both an absolute unwanted level and a temporal tolerance (not exceeded for more than 5% of any 1 hour period). The clause also directs the use of logarithmic scaling for other bandwidths, which creates a duty to apply correct scaling methodology when comparing measured values in bandwidths other than 5 MHz.

Interplay with licensing obligations. The instrument does not itself amend licence terms, but it supplies the standard that will be used to determine compatibility between spectrum licence receivers and apparatus licence transmitters. Any regulatory duties or rights to direct adjustment of transmitters, or dispute resolution tools, will derive from the primary licensing framework under which these instruments operate. The instrument gives technical content to the concept of "unwanted signal" and sets the baseline for engineering assessments that underpin those licence obligations.

Limitations. The instrument is explicit about being "notional". That means the duty is to use the notional baseline in co‑ordination and assessment, not to guarantee that every individual deployed receiver matches the notional numbers. Parties should treat the instrument as a regulatory benchmark for assessment, not as a mandatory manufacturing specification for every device unless referenced in licence conditions or other regulatory instruments.

The instrument itself does not prescribe penalties or enforcement procedures. Its text sets out technical performance levels and measurement reference points, but it does not include sanctioning provisions, schedules of fines, or enforcement protocols. Accordingly, any enforcement, remedial directions, or penalties arising from breaches of the notional performance outcomes will depend on the primary legislative framework and the terms of the relevant spectrum and apparatus licences, which are not contained in the instrument text provided.

Operational enforcement mechanics, as implied by the instrument. Although the instrument is silent on sanctions, it does create a practical mechanism that will be used in enforcement and dispute resolution:

• The notional receiver performance levels and the antenna‑connector measurement point will be the baseline engineering criteria applied when a regulator or adjudicator assesses whether an apparatus‑licence transmitter is causing unacceptable unwanted signals to a spectrum licence receiver (clauses 1(1), 1(4), 2-4).
• The Register values for antenna gain and feeder loss (clause 5) are required to be used in co‑ordination. Where Register entries are false or inaccurate, disputes about interference could lead to enforcement action under the primary regulatory regime for incorrect Register information, if that regime imposes obligations to keep entries up to date.

Evidentiary implications. Because the instrument defines a specific measurement reference point and cites an industry test standard, parties subject to enforcement can be expected to be required to present measurements and modelling performed in accordance with those criteria. The instrument raises the standard of technical proof by making its numbers the normative reference.

Discretion and application risk. The instrument leaves enforcement decisions to the relevant licensing and regulatory framework. That creates implementation risk in two respects:

• A regulator or decision maker will have discretion in how strictly to apply the notional baseline when actual deployed equipment differs from the notional model.
• Where the notional baseline yields different outcomes depending on the selection of Register values, there is scope for contested evidence over which Register entry or which measurement configuration should apply.

Practical enforcement consequence. In practice, parties that exceed the notional unwanted-power thresholds at the receiver antenna connector, based on the Register parameters and the instrument’s tables and formulas, can expect that technical evidence based on this instrument will be decisive in co‑ordination and interference proceedings. But the instrument does not itself specify those proceedings or penalties; those remain in the licensing and enforcement instruments outside the text provided.

Interaction with licence frameworks. The instrument repeatedly frames its notional receiver performance with reference to "spectrum licence" receivers and "apparatus licence" transmitters (clause 1(1) and elsewhere). That implies the instrument is intended to be used inside the wider licensing framework which governs spectrum licences and apparatus licences. The instrument supplies technical criteria for compatibility and co‑ordination that licence holders, and regulators enforcing licences, will apply. The instrument does not itself amend licence conditions, but it operationalises technical assessment under the licensing regime.

Interaction with the Register. Clause 5 directs that antenna gain and feeder loss recorded in the Register should be used for co‑ordination. That creates a direct interaction with the legal regime that determines what must be recorded in the Register, how updates are made, and the legal consequences of inaccurate Register entries. The instrument therefore depends on and reinforces the legal effect of Register entries in broader regulatory law.

Reference to industry standards. The instrument explicitly cites 3GPP TS 38.104 V17.5.0 (2022-04) as the source for the numerical values used in the adjacent channel selectivity and intermodulation tables (clauses 2 and 3 source notes). This creates an interface with the law’s treatment of technical standards: it anchors regulatory expectations to an industry specification, and so parties must align product test methods and evidence to that standard when demonstrating compliance or contesting interference claims.

Measurement and evidence law. Clause 1(4) requires comparisons to be made at the antenna connector. Many regulatory and administrative bodies rely on technical instruments as legal benchmarks. This instrument therefore interacts with evidentiary rules in administrative law and licensing enforcement, because it prescribes the technically relevant measurement point and the scaling method for bandwidths (section 14). If other legal instruments require measurements at different points, a legal question can arise about which reference applies; the instrument is explicit that this instrument’s measurements are at the antenna connector.

Potential conflicts or overlaps. The instrument supplies a "notional" receiver model. If other instruments or licence conditions prescribe different notional or actual receiver performance levels, there is scope for overlap or conflict. Resolution of such conflicts will fall to the legal hierarchy under which these instruments are made, and to the licensing framework that incorporates them, although that process is outside the provided text.

No explicit criminal or civil causes created. The instrument does not create standalone civil causes of action or criminal offences, nor does it set monetary penalties. Civil or administrative remedies resulting from interference will derive from the wider statute and licence terms, with this instrument providing technical content for those remedies.

Temporal and procedural interaction. Clause (section 14) sets temporal criteria (5% of any 1 hour). Parties must therefore integrate this instrument’s temporal metric with any procedural requirements in the licensing statutes that govern who may give notice, what evidence is required, and timelines for remediation.

In summary, the instrument interacts with other laws by supplying technical benchmarks that are used in licence administration, Register operation, evidence and testing procedures, and in adjudication under the primary licensing regime. The instrument relies on Register entries and referenced technical standards, and it provides the technical content that other legal instruments will apply, but it does not itself contain enforcement, penalties, or procedural rules.

The text provided does not include a formal amendment record or legislative history. The instrument cites 3GPP TS 38.104 V17.5.0 (2022-04) as the source for the technical tables and values (clauses 2 and 3 source notes), which indicates the technical basis and the vintage of the underlying industry standard used to derive the numbers. The presence of that reference provides an implicit pathway for future updates: if 3GPP publishes revised values in a later version of TS 38.104, the numeric baselines in this instrument would require amendment to remain synchronised with the new 3GPP figures.

Elements that would typically be changed in future amendments. Based on the content, amendments would most likely target:

• The numerical sensitivity reference levels in clause 1(2), if industry measurement practice or receiver architectures evolve.
• The coefficients and exponents in the radiofrequency selectivity piecewise formula in clause 1(3), if new data suggests different selectivity behaviour.
• The numerical dB values in the adjacent channel selectivity, intermodulation, and blocking tables (clauses 2-4), if subsequent 3GPP releases revise those numbers.
• The absolute compatibility metric for fixed receivers in clause (section 14), for example a change to the -108 dBm level, the 5% temporal threshold, or the bandwidth scaling approach.

No formal dates, amending instruments, or prior versions are included in the supplied text, so the instrument as supplied appears as a stand‑alone instrument that references the 2022‑04 3GPP release. Any practitioner requiring the amendment lineage must consult the published legislative instrument register or the primary legislative database to obtain the instrument’s enacting details, commencement date and any subsequent variations.

Practical implication of the lack of amendment history in the text. Because the instrument’s technical values are anchored to a specific 3GPP version, practitioners should verify whether the instrument has been superseded or updated, particularly in contexts where device specifications or network deployments reference more recent versions of 3GPP. The instrument’s reliance on an external standard means that the forward maintenance path will typically be either: (a) an express instrument amendment updating the 3GPP reference and the numeric tables, or (b) a regulatory policy or guidance that explicitly states the instrument’s continued applicability notwithstanding later 3GPP publications. The text provided does not include either mechanism.

In summary, no formal amendment history is present in the provided text. The instrument references a specific 3GPP version from 2022, which is the only temporal anchor in the document. Practitioners should check the authoritative instruments register for any subsequent amendments before relying on the numbers for long‑term network planning or regulatory submissions.

The instrument text contains no mention of litigation, court decisions, or administrative determinations. It cites only technical standard sources (3GPP TS 38.104 V17.5.0 (2022-04)) for the tables. Therefore there is no litigation history recorded within this instrument’s text.

Practical consequences of the lack of recorded litigation. Absent referenced case law or adjudicative decisions, the instrument’s technical benchmarks become the primary source of technical norms in any future dispute. If an interference or co‑ordination dispute arises, parties and decision makers will rely on these numbers as the technical standard to be applied. The lack of judicial or administrative precedent in the instrument mean that:

• Early disputes are likely to generate the first interpretive rulings on how strictly the notional baseline should be applied against real receivers and transmitters.
• Administrative bodies or courts asked to resolve disputes will likely treat the instrument as persuasive and possibly determinative technical evidence, but they may also consider actual measured performance and practical mitigation options.

Areas likely to generate litigation or contested decisions. Although there is no litigation history in the text, practical disputes that could arise and require adjudication include:

• Conflicts over which Register antenna and feeder loss entries should be used for co‑ordination if multiple entries exist or entries are contested in accuracy (clause 5).
• Whether the notional baseline should be adjusted where actual deployed receiver performance significantly departs from the notional assumptions, or where licence holders claim a higher protection requirement than the notional baseline provides.
• Interpretation of the temporal criterion in clause (section 14), for example what constitutes "not exceeded for more than 5% of any 1 hour period" in measurement practice, and what counting or measurement methodologies are acceptable.

Because no litigation history is reported in the instrument, parties should be prepared to rely on clear, reproducible measurements conducted at the antenna connector, in line with the instrument’s references to 3GPP test figures, when presenting evidence in any administrative or judicial process.

"Notional" does not equal actual device performance. The document repeatedly uses the term "notional": these are regulatory benchmarks intended for co‑ordination and compatibility assessments. Do not assume that all deployed receivers will conform to these exact numbers. Clause 1(4) explicitly states comparisons are defined at the antenna connector to take external filters and the entire receiving system into account. When a deployed receiver performs better or worse than the notional baseline, disputes can arise about which numbers prevail in a practical co‑ordination scenario. The notional numbers are the regulatory reference, but actual equipment may deviate.

Relative dB values are anchored to different sensitivity references, but produce common absolute thresholds. The tables express adjacent channel selectivity and blocking in dB relative to sensitivity. Careful arithmetic is required. For example, using the instrument’s sensitivity anchors:

• For receivers with occupied bandwidth < 20 MHz, sensitivity = -96 dBm per 5 MHz (clause 1(2)(a)).
• For receivers with occupied bandwidth ≥ 20 MHz, sensitivity = -89 dBm per 20 MHz (clause 1(2)(b)).

Applying the adjacent channel selectivity numbers:

• For <20 MHz, minimum relative adjacent channel selectivity is 44 dB (clause 2(2)), so unwanted signal level = -96 dBm + 44 dB = -52 dBm at antenna connector.
• For ≥20 MHz, minimum relative adjacent channel selectivity is 37 dB, so unwanted signal level = -89 dBm + 37 dB = -52 dBm.

The same happens with blocking values:

• <20 MHz: 53 dB above -96 dBm yields -43 dBm.
• ≥20 MHz: 46 dB above -89 dBm yields -43 dBm.

Thus the instrument’s choice of sensitivity anchors and relative dB values produces identical absolute unwanted‑power thresholds across the bandwidth categories, a non‑obvious arithmetic consequence. Practitioners must always convert relative dB numbers into absolute dBm figures for coordination calculations.

Beware the dual measurement regimes for blocking. For the specified 700 MHz subranges, blocking is given as dB above sensitivity (clause 4(1)). Outside those subranges, clause 4(2) specifies an absolute total mean power of -15 dBm for frequencies in 1 MHz to 12,750 MHz excluding the clause 4(1) ranges. That is an abrupt change from relative thresholds to an absolute power limit and must be handled carefully in link budgets and interference analyses.

FreqOffset definition and edge cases. FreqOffset is defined as the smallest frequency difference between either the upper or lower limits of the licence frequency band under which the receiver operates and any frequency outside that band (clause 1(3) end note). Where a transmitter occupies a frequency that straddles a licence band edge, or where there are multiple potential interferers, the FreqOffset to use in the selectivity formula must be carefully calculated. The instrument does not provide worked rules for multi‑carrier or wideband interfering sources; practitioners must compute the smallest offset for the relevant component.

Measurement point requirement. The comparison is defined at the antenna connector port (clause 1(4)). That includes the entire receiving system, external filters, and feeder losses. When performing field measurements, it is common to measure at the receiver input or at a remote monitoring point; those measurements must be converted appropriately to the antenna connector reference using the Register feeder loss and antenna gain values, otherwise the comparison will not match the instrument’s baseline.

Register entries matter. Clause 5 requires use of antenna gain and feeder loss recorded in the Register for co‑ordination. If a Register entry inaccurately states antenna gain or feeder loss, co‑ordination calculations will be skewed, and the party whose Register entry is wrong may find themselves disadvantaged. Ensure Register entries are accurate, and when contesting co‑ordination decisions, be ready to justify the Register parameters relied upon.

Temporal metric interpretation. Clause (section 14) sets a compatibility threshold for fixed receivers as -108 dBm per 5 MHz, not exceeded for more than 5% of any 1 hour period, with logarithmic scaling for other bandwidths. The practical measurement methodology for determining the 5% exceedance will be consequential, and the instrument does not specify the sample rate, integration time, or statistical method. Parties must therefore agree, or be prepared to litigate, acceptable measurement protocols for counting exceedance percentage.

Intermodulation tests require multi‑tone scenarios. Clause 3(1) defines intermodulation response rejection as the ability to receive a wanted signal in the presence of two or more unwanted signals with specific amplitude and frequency relationships. The instrument’s intermodulation table values apply per out‑of‑band signal (clause 3(2)), but the document itself does not prescribe the exact intermodulation testing configuration. Practitioners should consult 3GPP TS 38.104 for test procedures, because the instrument cites 3GPP as its source.

Logarithmic scaling without precise formula. Clause (section 14) requires logarithmic scaling to find equivalent levels in alternative bandwidths, but the instrument does not present the exact scaling formula. In radio engineering, bandwidth scaling is commonly handled by 10·log10(BW2/BW1) for noise‑like quantities, but the instrument does not fix that approach. Parties should document and agree on the scaling method used in any analytical or measurement evidence.

No penalties in the instrument. Do not assume that exceeding a notional threshold in itself triggers an automatic fine or sanction. The instrument sets technical benchmarks; any enforcement will come through the licensing and regulatory regime that applies those benchmarks. Practitioners must map instrument thresholds onto licence obligations and statutory enforcement mechanisms outside the instrument if they are to seek remedies.

Step 1, establish which numbers apply. Identify whether the receiver in question is to be treated as having occupied bandwidth less than 20 MHz or 20 MHz or greater, because that determines the applicable sensitivity reference (clause 1(2)). For fixed receivers used in compatibility assessments, confirm whether clause (section 14)’s -108 dBm per 5 MHz metric is the relevant test.

Step 2, use the Register for antenna and feeder parameters. Clause 5 requires that antenna gain and feeder loss recorded in the Register be used for co‑ordination. Before running calculations, extract the Register entries for the receiver and use those entries to convert field or simulated power levels to the antenna connector reference point required by clause 1(4).

Step 3, compute FreqOffset. Determine the smallest frequency difference between the upper or lower limits of the spectrum licence band under which the receiver operates and the frequency(s) of any transmitter outside that band that may cause unwanted signals, because FreqOffset is used both in the notional selectivity formula (clause 1(3)) and in determining which table rows apply in the adjacent channel and intermodulation assessments.

Step 4, convert relative dB figures to absolute dBm limits. The tables in clauses 2-4 are expressed as dB relative to sensitivity. Convert those relative figures to absolute dBm target limits by adding the relevant dB figure to the applicable sensitivity reference:

• For <20 MHz receivers, sensitivity = -96 dBm per 5 MHz.
• For ≥20 MHz receivers, sensitivity = -89 dBm per 20 MHz.

Example arithmetic to document in reports:

• Adjacent channel allowable unwanted = sensitivity + adjacent channel selectivity (dB).
• Intermodulation allowable unwanted per out‑of‑band signal = sensitivity + intermodulation figure (dB).
• Blocking for the specified 700 MHz subranges = sensitivity + blocking figure (dB).
• Blocking for other frequencies = absolute total mean power -15 dBm (clause 4(2)).

Note the arithmetic consequence that the instrument’s sensitivity anchors and dB figures produce the same absolute thresholds: both bandwidth categories yield -52 dBm for adjacent channel and -43 dBm for blocking, after conversion.

Step 5, test or model at the antenna connector. Clause 1(4) requires that comparisons be defined at the antenna connector port, taking the entire receiving system including external filters into account. When performing field measurements, translate measured values to the antenna connector using the Register feeder loss and antenna gain, and document the conversion methodology. Where modelling is used rather than measurement, include assumed feeder losses and antenna patterns and verify that they match Register entries.

Step 6, apply the selectivity curve where relevant. Where FreqOffset is within the ranges specified in clause 1(3), compute the notional radiofrequency selectivity using the piecewise formula. Use that selectivity to assess how much rejection is assumed at the receiver for a given offset, and include that result in link budgets and interference analyses.

Step 7, address intermodulation scenarios. Clause 3 defines intermodulation response rejection for the presence of two or more unwanted signals, and clause 3(2) gives per‑signal dB figures. Test or model multi‑tone interference cases in accordance with the measurement methodology in the referenced 3GPP standard, and document the amplitude and frequency relationships assumed.

Step 8, apply the fixed receiver compatibility metric if relevant. For fixed receivers, clause (section 14) requires that unwanted signals be no greater than -108 dBm per 5 MHz, not exceeded for more than 5% of any 1 hour period. When assessing compliance:

• Use an agreed measurement period and sampling method to determine exceedance percentage.
• Apply logarithmic scaling when the measurement bandwidth differs from 5 MHz, documenting the exact scaling formula used. If the measurement is made across a different bandwidth, convert to the 5 MHz-equivalent using a documented logarithmic scaling method.

Step 9, document assumptions and measurement protocols. Because the instrument prescribes measurement points and references external standards, include in any technical submission:

• The Register entries used for antenna gain and feeder loss.
• The sensitivity reference and how it was applied.
• The method used to compute FreqOffset.
• The conversion of relative dB values to absolute dBm.
• The test or simulation methodology, including instrumentation, integration time, bandwidth, sample rate, and any filtering, consistent with 3GPP TS 38.104 where appropriate.
• The method used for temporal exceedance computation for clause (section 14).

Step 10, maintain Register accuracy and update documentation. Because co‑ordination and compatibility rely on Register values under clause 5, ensure that entries for antenna gain and feeder loss are accurate and updated promptly when hardware or siting changes occur. Keep a contemporaneous audit trail of when Register entries were created or amended.

Step 11, reconcile with licence obligations and seek regulatory guidance if in doubt. The instrument sets technical benchmarks but does not itself include enforcement procedures. For obligations that flow from licence terms or for disputes, map the instrument’s technical outcomes onto the relevant licence conditions and, where there is uncertainty about interpretation or application, seek guidance from the licensing authority or a formal ruling under the applicable regulatory regime.

Checklist summary for compliance submissions:

• Identify receiver bandwidth category and sensitivity anchor (clause 1(2)).
• Pull Register antenna/feeder values and document them (clause 5).
• Compute FreqOffset and apply selectivity formula (clause 1(3)).
• Convert relative dB thresholds to absolute dBm at antenna connector (clauses 2-4).
• Measure or model at antenna connector, including external filters (clause 1(4)).
• For fixed receivers, check against -108 dBm per 5 MHz / 5% of hour threshold and apply logarithmic scaling (section 14).
• Document all measurement methods in accordance with 3GPP test practices cited by the instrument.

Following these steps aligns technical practice with the instrument’s specified baselines and reduces the risk of a disputed co‑ordination outcome being decided against a party for procedural or evidentiary failures.