Transcript
KRT 2 – TB 2 PORTABLE VHF-AM TRANSCEIVER
The highest performance, most rugged and elegant air band portable available today…
The KRT2-TB2 portable is the follow-on to the very successful TB1. Developed by PJ Aviation in South Africa in collaboration with Walter Dittel, Germany, with high local content, stronger, yet simplified construction, easier servicing, modern design and convenience of use. Reduction in weight without compromising strength was a major goal in the development and this was achieved with optimum use of a combination of high strength corrosion resistance alloys. Accuracy of dimensions and fit is achieved through the use of CAD/CAM in a highly automated facility in Johannesburg. The TB2 housing has no plastic outer case. The alloy used in the outer shells and face is resistant to salt water corrosion and denting. A high quality powder coating is applied to the shells and face plates. The light grey/black colours are standard, but users placing high volume orders may choose their own colours.
The handle is polished stainless steel bar. A polished thin stainless steel cover clips over the face plate to provide a protected storage area for accessories during transport. This stores underneath during operation. Particular attention has been taken regarding the security of the battery during transport and rough use. Yet removal and replacement is an easy task.
Vertical deployment
Field use
ATC backup
Internal Charger Accepts 90-240Vac
Bi-Colour Charging Status
Locking Handle
Battery charging of a portable has to be optimum to provide the longest operating times in the field. Merely charging to 13,8v does not achieve a full charge and long battery life. The TB2 uses an automatic charger with a 2A constant current characteristic to 14,6v, equalizing the cells, and then dropping back to a 13,8v trickle. For world wide universal use, the mains charger is rated for 90 to 240VAC 50 or 60Hz. Mains charging status is indicated on the face plate with a bi-colour LED. To de-clutter the face plate, the mains charging socket is fitted at the bottom of the case.
External 14VDC charging sources can be connected to the current limiting external DC charging connector. The battery voltage may be read on the KRT-2 radio’s display. The standard battery used in the Professional Model is a 12v/7,5Ah LiFePO4 battery with internal BMS and deep discharge protection. Compared to a sealed lead acid battery, this lithium type significantly increases the operating time by, trebles the time between battery change, ensures a minimum of 6W carrier output on battery power alone (not possible with a lead type due to the lower voltage) and reduces the portable’s overall weight by 1,2Kg. This battery is required when the KRT-2 radio is loaded with special firmware for higher carrier power.
The loudspeaker has a waterproof mylar cone behind a stainless steel mesh. A dynamic microphone is provided. A speaker-microphone is optional. Also optional is a communications monitor socket. The professional model utilizes a metal tubular microphone which stows inside a tube through the face plate. Headsets with in-line PTT switches are also available. The loud speaker can be muteed when connecting a headset.
The antenna on the professional version is a steel blade type with swivel joint, allowing the TB2 to be used upright or propped up on its handle on a desk. The all metal case allows the antenna to be properly tuned. External co-linear antennae and compact telescopic masts are available on request. Please specify length of coaxial cable required. The KRT2-TB2 portable transceiver is available in two versions:
PROFESSIONAL Internal mains charger with LED indication. Holmco dynamic tubular microphone supplied. Steel blade antenna with swivel base supplied. Stainless steel transport cover supplied. Lithium Iron Phosphate battery with BMS.
DITTEL AVIONIK KRT2 TRANSCEIVER FEATURES
• Full graphic TFT colour display allowing easy use under all light conditions including bright sun light. • Display illumination can be dimmed or turned off. • 8.33 kHz and 25 kHz channel spacing, for future compatibility. • The dual watch mode that allows monitoring of two different channels, with priority. • Memory for up to 100 user-definable named frequencies. • Single knob for easy gloved hand operation. • Modulation level, antenna match, battery voltage monitored on display.
TB2 PORTABLE’S GENERAL FEATURES
• Size approximately 250mm high, 254mm wide and 85mm deep (excludes handle). • Weight: Professional approximately 4.8Kg with lithium battery. • Basic approximately 6Kg with sealed lead acid battery. • Construction: 2mm 5754 alloy shells, CR12 steel framework, plus stainless steel. • Finish is partial gloss powder coating. • Stainless steel locking handle will withstand 10G forces • All screws in stainless steel. • Transceiver features and performance listed in the beginning of this section.
PJ AVIATION CC South Africa
BASIC
Customer provides own external charger. Dynamic fist microphone supplied. Helical antenna supplied. Stainless steel cover not included. Sealed lead acid battery.
KRT2 TRANSCEIVER SPECIFICATIONS:
• • • • • • • • •
Frequency Range: 118.000 MHz to 136.990 MHz Channel Selection: 8.33 or 25 kHz (select automatically). RF-Output Power: Nominal 6W (carrier power) Receiver Sensitivity: > 12 dB SINAD @ 2 uV typical Frequency stability 1ppm per annum. Modulation: Up to 90% Input Voltage Range: 9 V DC to 36 V DC. Loudspeaker audio output up to 10w (5w in portable). Operating Temperature Range: -20°C to +55°C, for short time up to +70°C. • Current consumption: 1,6 A @12 V DC (transmit), 110mA@12 V DC (receive standby). • Certification: ETSO-2C169a, ED-23B Class 4, C, TSO-C169a,Class 6, H1 & H2
Tel +27 71 657 4424
[email protected] www.pjaviation.co.za
