Tekintettel arra, hogy rossz a jelerősség, helyszíni felmérést kérek.

It is a fixed, fairly formal connector meaning something like considering that, in view of the fact that, or given that.

So this part introduces the reason/background for the request.

A very literal breakdown is:

• tekintettel = with regard / considering
• arra = to that
• hogy = that

But in real Hungarian, you should learn tekintettel arra, hogy as one unit.

This is a common Hungarian pattern.

Certain words and expressions take a pronoun first, and then a hogy-clause explains what that pronoun refers to. So arra points forward to the whole clause that comes after it.

You can think of it like:

• tekintettel arra = with regard to that
• hogy rossz a jelerősség = that the signal strength is bad

So together: with regard to the fact that the signal strength is bad.

English usually does not need this extra pointer word, but Hungarian often does.

Yes. It sounds formal, administrative, or business-like.

In everyday speech, a Hungarian speaker would often use something simpler, such as:

• mivel
• mert
• amiatt, hogy

So this sentence sounds like something you might see in an email, report, service request, or official communication.

Tekintettel comes from the noun tekintet, which means regard, consideration, or respect in this kind of formal usage.

The ending -tel is the instrumental/comitative ending, roughly with.

So historically/literally, tekintettel is something like with regard.

This is why the whole expression feels a bit more formal and fixed than a simple everyday conjunction.

Because the expression tekintettel valamire requires the ending -ra/-re on what follows it.

So:

• valamire = to something / regarding something
• arra = to that

Since the reason is expressed by a clause, Hungarian uses arra, hogy...

This is similar to other Hungarian patterns such as:

• örülök annak, hogy...
• emlékszem arra, hogy...

The demonstrative pronoun takes the case required by the expression, and then the hogy-clause explains it.

Hungarian usually omits the verb to be in the present tense, third person, when the predicate is a noun, adjective, or similar expression.

So:

• A jelerősség rossz. = The signal strength is bad.
• Rossz a jelerősség. = The signal strength is bad.

There is no van here, and that is completely normal.

But in past or future, the verb appears:

• A jelerősség rossz volt. = The signal strength was bad.
• A jelerősség rossz lesz. = The signal strength will be bad.

Both are possible, but the word order changes the information structure.

• Rossz a jelerősség sounds like a natural statement presenting the problem: The signal strength is bad.
• A jelerősség rossz puts more emphasis on the signal strength as the topic, as if you are saying: As for the signal strength, it is bad.

Hungarian word order is strongly influenced by topic and focus, not just by subject-verb-object order. So the version in your sentence is very natural in context.

It is a compound noun:

• jel = signal
• erősség = strength

So jelerősség literally means signal strength.

Hungarian makes compound words very freely, so long nouns like this are extremely common.

Helyszíni means on-site, at the location, or performed at the scene/place.

It comes from:

• helyszín = location, site
• -i = an adjective-forming ending

So helyszíni felmérés is an on-site survey/assessment/inspection.

This -i ending is very common in Hungarian for making adjectives from nouns, especially places and institutions.

The -t is the accusative ending, marking the direct object.

Here, the thing being requested is a survey/assessment, so it appears in the accusative:

• felmérés = survey, assessment
• felmérést = survey/assessment as the object

This is because kérek means I request / I ask for, and it takes an object.

This is about Hungarian definite vs. indefinite verb conjugation.

Here the object is felmérést, with no definite article, so it is treated as indefinite:

• helyszíni felmérést kérek = I request an on-site survey

That is why the verb is kérek.

If the object were definite, you would use the definite conjugation:

• A helyszíni felmérést kérem. = I request the on-site survey.

So:

• kérek = indefinite object
• kérem = definite object

This is one of the most important grammar features in Hungarian.

Yes, in this kind of formal or administrative sentence, kérek is normal and acceptable.

It sounds direct, professional, and business-like. It does not automatically sound rude.

If you wanted to sound softer or more polite, you could use expressions such as:

• helyszíni felmérést szeretnék kérni
• kérem, hogy végezzenek helyszíni felmérést

But the original sentence is perfectly natural in a formal request.

Yes. A less formal version could be:

• Mivel rossz a jelerősség, helyszíni felmérést kérek.

Or even:

• Mert rossz a jelerősség, helyszíni felmérést kérek.

The original with tekintettel arra, hogy sounds more official and polished, while mivel or mert sounds more straightforward and conversational.