Following on from the TH-D74, the TH-D75A adds many useful features such as simultaneous reception of 2 D-STAR signals, Reflector Terminal mode for accessing D-STAR reflectors, enhanced voice guidance, and an APRS standalone digipeater function. Usability has also been improved with the adoption of USB Type-C, Bluetooth headset PTT support, and a fully ergonomic design. These much-anticipated additions mean that this premium model is sure to satisfy the needs of a wide range of amateur radio operators.
Compatible with the APRS® communication protocol, which allows real-time two-way data transmission using packet communications
GPS-linked Relative Display Compass plus weather information
In addition to providing real-time information on your station using the built-in GPS function, the TH-D75A features Relative Display Compass for at-a-glance information—distance, direction, heading, and speed—relating to your own station and another station (set in advance). This makes it easy to monitor relative position and heading. Weather station information—including rainfall, temperature, wind speed/direction, barometric pressure and humidity—can be displayed in color.
Store up to 100 stations
The station list can store a maximum of 100 stations, including mobile stations, base stations, weather stations and objects. It is also possible to limit/sort the types of station received. Local information can be transmitted as objects.
Real-time messaging between stations running APRS is possible. Text messages can be input using the keys or selected from a number of presets.
Fast QSY is possible: FM and D-STAR voice channels can be set using frequencies embedded in beacons from APRS stations or D-STAR repeater information. D-STAR gateway communication is set automatically.
NEW: Standalone digipeater function
This function enables the TH-D75A to operate as a temporary digipeater station in the field, allowing APRS coverage to be expanded even in mountainous locations.
Compatible with D-STAR® amateur radio digital communications network, developed by the Japan Amateur Radio League (JARL)
NEW: Simultaneous reception of 2 D-STAR signals (one on Band A, one on Band B)
Flexible operation enabled with voice and data modes
The TH-D75A offers a wide variety of operations—including simplex, single repeater relay, and inter-repeater gateway—making communications possible with both local and worldwide stations. Enjoy the superb voice clarity that only digital can deliver.
DV (Digital Voice) fast data mode
DV fast data mode sends data on unused voice frames to achieve faster throughput and smoother data transmission.
DR (D-STAR Repeater) mode for simple operation
Accessing D-STAR repeater is simple: just pick and set one from a list. To respond directly to gateway calls, simply press the PTT switch. In addition to this direct reply function, the TH-D75A uses icons and voice guided phrases to notify accessibility status during kerchunk or gateway communications. And up to 120 entries can be stored in the log, enabling the user to easily recall stations.
NEW: Reflector Terminal mode for more convenient communications via D-STAR reflectors
D-STAR reflectors are D-STAR voice relay servers on the Internet that can be used to monitor and communicate with stations around the world that are connected to the same servers. The TH-D75A is compatible with MMDVM commands and can be connected to a D-STAR reflector via a Windows PC or Android device with a third-party application such as BlueDV. The local connection uses either Bluetooth or USB cable, so there is no need for a mini RF device such as a Hotspot. Furthermore, the simultaneous two-wave reception function of D-STAR makes it possible for the TH-D75A to connect to a reflector in terminal mode on band A, while receiving a nearby repeater on band B, providing opportunities for various operations.
Wideband and multimode reception
Wideband reception is enabled on Band B. In addition to wideband reception on 0.1 to 524 MHz bands, reception in LSB/USB/CW/AM modes is also possible. Fine mode achieves zeroing-in with a minimum step frequency of 20 Hz*1 and there is a bar antenna*2 for 0.1 to 10 MHz reception. In DVxDV mode, VxV, UxU, or VxU simultaneous reception is supported.
*1 Only for SSB, CW and AM modes
*2 Selectable with SMA antenna connector
IF filters for reduced reception interference
Equipped as standard are IF filters to attenuate adjacent signals during SSB or CW operation. Excellent skirting capacity enables low-interference reception. (Selectable ranges: 2.2 – 3.0 kHz for SSB, 0.3 – 2.0 kHz for CW, and 3.0 – 7.5 kHz for AM).
IF output mode
An IF signal with a central frequency of 12kHz and a bandwidth of 15kHz can be output via the USB port. And by using a third-party PC application, one can also use the PC’s band scope to check the status of nearby frequencies while listening to the sound received by the TH-D75A.
Enhanced voice guidance
Voice guidance functions have been significantly upgraded compared to the previous model (TH-D74). Included are variable speed (4 levels), variable volume (1 to 7), VOL-linkage, and more than 770 phrases. The TH-D75A has also been greatly enhanced from its predecessor, including support for call sign reading with phonetic codes.
KENWOOD sound quality
The TH-D75A delivers renowned KENWOOD sound quality. The built-in audio equalizer enables the setting of a 5-band RX EQ (0.4 to 6.4 kHz) and a 4-band TX EQ (0.4 to 3.2 kHz) to suit user preferences. In addition to making use of the accumulated acoustic technologies, KENWOOD’s technical know-how for high sound quality has been incorporated, including the selection of quality audio components, optimization of the housing structure, and tuning of the voice codecs.
NEW: USB Type-C port
As well as serial communications and audio in/out, the USB Type-C port can be used for battery charging.