what frequency vs which frequency

Both 'what frequency' and 'which frequency' are correct, but they are used in different contexts. 'What frequency' is used when asking for an unknown frequency among a range of possibilities, while 'which frequency' is used when selecting a specific frequency from a known set of options.

Last updated: March 24, 2024 • 2413 views

This phrase is correct and commonly used in English when asking for an unknown frequency among a range of possibilities.

"what frequency"

Use 'what frequency' when you are asking for the specific frequency of something that is not predetermined or known.

Examples:

What frequency does the radio station broadcast on?
What frequency should I set the microwave to?
What frequency does the earthquake monitoring system operate on?
What frequency is the signal transmitted at?
What frequency is the best for this type of communication?

Show examples from the web [+]

Come on, Assi, what frequency?
If so, has it consented to regular inspections, and with what frequency?
When we were tracking him, he knew what frequency we were on.
In addition to specifying which routes are to be served and with what frequency, the five-year plans also specify the investments the concessionary companies intend to make over the period in order to guarantee service on the routes in question.
The Commission would also decide in future if and on what frequencies radio communications can be broadcast.
On what frequencies and bandwidths are the messages broadcasted?
What is the frequency and size of the tenders?
what was the frequency of non-compliances in various sectors?
What? The new frequency of the deflector grid is set to turn the station into a massive chroniton array aimed directly at the wormhole.
What is the minimum frequency with which the borrower are obliged to make payments if they have a balance outstanding.
What if the frequency sets it off?
Do you know what a radio frequency tag is?
What's the frequency for the boat?
So what's the frequency Kenneth?
Can the Commission confirm whether the relevant working group is now established and functioning, and what the frequency of its meetings is?
George and Gracie's transmitter, what's the radio frequency?
If yes, what arrangements apply (frequency, checks on project activities/financial aspects, etc.)?
In general terms, what monitoring frequencies have been set in permits for air emissions, water emissions, soil/groundwater emissions and other relevant process parameters?
What is the frequency of investor redemptions (if multiple classes of shares or units, report for the largest share class by NAV)
What if the frequency sets it off? No, no, no.

Alternatives:

At what frequency
On what frequency
At which frequency
On which frequency

This phrase is correct and commonly used in English when selecting a specific frequency from a known set of options.

"which frequency"

Use 'which frequency' when you are choosing a frequency from a set of known options or possibilities.

Examples:

Which frequency band is the most suitable for this application?
Which frequency range should we use for the experiment?
Which frequency channel is the most reliable for communication?
Which frequency setting provides the best reception?
Which frequency is recommended for this type of equipment?

Show examples from the web [+]

Depends on which frequency you try.
At this stage it is known to some extent which type of mammal is sensitive to which frequency and energy level.
There are a great number of cases in Europe in which frequency licences are not renewed and yet this Parliament has never spoken of human rights violations and curbing freedom of expression.
Many local broadcasting stations have raised strong objections to the way in which frequencies for the new digital radio and television system have been allocated so far.
I would ask the Commissioner to take a more active role in future in formulating the conditions and in relation to the way in which frequencies are distributed.
They are derived from spontaneous reports for which the frequency cannot be estimated.
Whereas on the basis of present technological and market trends, it appears realistic to envisage the designation of the 169,4 - 169,8 MHz frequency band as the band from which frequencies
The frequency at which Olivia is resonating...
Reactions for which no frequency rate can be provided due to lack of clinical trial data, have been classified as "Not known".
It is the first such installation anywhere in the world for container ships which features frequency conversion (60 Hz -> 50 Hz).
Designation of service for which the frequency shall be used, including
Such services need dedicated infrastructure, which means having frequencies available.
These measures shall not cover frequencies which are used for broadcasting.
Additional side effects from post-marketing experience with DuoTrav for which the frequency is unknown include:
Finally, they provide a framework within which higher frequency data, notably monetary, b.o.p., and securities issues statistics, and government finance statistics, may be assessed and checked for consistency.
Then we come to the deadlines by which the frequency of checks is to be increased from 1% to 3% of working days.
Based on the frequency at which these transmit... I detect seven facemakers in the building.
If we can establish the frequency on which it operates...
However, your doctor may determine an alternative frequency at which to inject Enbrel.
This was the main factor determining the frequency with which Community law was raised.

Alternatives:

At which frequency
On which frequency
At what frequency
On what frequency

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what frequency vs which frequency

"what frequency"

"which frequency"

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