Struct Frequency 

pub struct Frequency(/* private fields */);

Radio frequency in Hz.

Stored as a u32, matching the firmware’s internal representation. Range: 0 to 4,294,967,295 Hz (0 to ~4.295 GHz).

TH-D75 band frequency ranges

Per service manual §2.1.2 (Table 1) and User Manual Chapter 28, the radio enforces hardware-specific frequency limits per band. The service manual frequency configuration points (A-E) map to the signal path in the receiver block diagrams (§2.1.3):

TH-D75A (K type)

Point	Frequency range	Function
A (TX/RX)	144.000-147.995, 222.000-224.995, 430.000-449.995 MHz	VCO/PLL output → 1st mixer
B (RX)	136.000-173.995, 216.000-259.995, 410.000-469.995 MHz	RF AMP → distribution circuit
C (RX)	0.100-75.995, 108.000-523.995 MHz	Band B wideband RX input
D (1st IF)	193.150-231.145, 158.850-202.845, 352.850-412.845 MHz	After 1st mixer (Band A)
E (1st IF)	58.150-134.045, 166.050-465.945 MHz	After 1st mixer (Band B)

TH-D75E (E, T types)

Point	Frequency range	Function
A (TX/RX)	144.000-145.995, 430.000-439.995 MHz	VCO/PLL output → 1st mixer
B (RX)	136.000-173.995, 410.000-469.995 MHz	RF AMP → distribution circuit
C (RX)	0.100-75.995, 108.000-523.995 MHz	Band B wideband RX input

Band A uses double super heterodyne (1st IF 57.15 MHz, 2nd IF 450 kHz). Band B uses triple super heterodyne (1st IF 58.05 MHz, 2nd IF 450 kHz, 3rd IF 10.8 kHz for AM/SSB/CW).

Frequencies outside these ranges will be rejected by the radio when sent via CAT commands such as FQ or FO. The firmware validates the frequency against the target band’s allowed range and returns a ? error response if the value is out of bounds. This library does not pre-validate frequencies to avoid duplicating firmware logic that may vary by region or firmware version.

Implementations

impl Frequency

pub const fn new(hz: u32) -> Self

Creates a new Frequency from a value in Hz.

No validation is performed; the full u32 range is accepted to match firmware behaviour.

pub const fn as_hz(self) -> u32

Returns the frequency in Hz.

pub fn as_khz(self) -> f64

Returns the frequency in kHz as a floating-point value.

pub fn as_mhz(self) -> f64

Returns the frequency in MHz as a floating-point value.

pub fn to_wire_string(self) -> String

Formats the frequency as a 10-digit zero-padded decimal string for CAT protocol wire transmission.

Example: 145 MHz becomes "0145000000".

pub fn from_wire_string(s: &str) -> Result<Self, ProtocolError>

Parses a 10-digit decimal string from the CAT protocol into a Frequency.

Errors

Returns ProtocolError::FieldParse if the string is not exactly 10 characters or contains non-numeric characters.

pub const fn to_le_bytes(self) -> [u8; 4]

Returns the frequency as a 4-byte little-endian array.

pub const fn from_le_bytes(bytes: [u8; 4]) -> Self

Creates a Frequency from a 4-byte little-endian array.

Trait Implementations

impl Clone for Frequency

fn clone(&self) -> Frequency

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for Frequency

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Display for Frequency

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the frequency in MHz with three decimal places.

Example: Frequency::new(145_190_000) displays as "145.190 MHz".

impl Hash for Frequency

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl Ord for Frequency

fn cmp(&self, other: &Frequency) -> Ordering

This method returns an Ordering between self and other.

fn max(self, other: Self) -> Self

where Self: Sized,

Compares and returns the maximum of two values.

fn min(self, other: Self) -> Self

where Self: Sized,

Compares and returns the minimum of two values.

fn clamp(self, min: Self, max: Self) -> Self

where Self: Sized,

Restrict a value to a certain interval.

impl PartialEq for Frequency

fn eq(&self, other: &Frequency) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl PartialOrd for Frequency

fn partial_cmp(&self, other: &Frequency) -> Option<Ordering>

This method returns an ordering between self and other values if one exists.

fn lt(&self, other: &Rhs) -> bool

Tests less than (for self and other) and is used by the < operator.

fn le(&self, other: &Rhs) -> bool

Tests less than or equal to (for self and other) and is used by the <= operator.

fn gt(&self, other: &Rhs) -> bool

Tests greater than (for self and other) and is used by the > operator.

fn ge(&self, other: &Rhs) -> bool

Tests greater than or equal to (for self and other) and is used by the >= operator.

impl Copy for Frequency

impl Eq for Frequency

impl StructuralPartialEq for Frequency