Elecraft K4 – High Performance Direct Sampling SDR

Elecraft K4

High-Performance Direct-Sampling SDR-Transceiver 160-6m

Der neue K4 wird anlässlich der HAMvention in Dayton (17.-19.5.2019) erstmals der Öffentlichkeit vorgestellt. Da die neue Linie noch die CE-Zertifizierung durchlaufen muss, erfolgt die Markteinführung in Europa voraussichtlich November/Dezember 2019.

Mehr dazu bei der Firma Lutz-Elektronics

Fast signal processing

The RF signal chain in the K4 incorporates parallel hardware processing of data streams, including a dedicated DSP subsystem. This, combined with silent, PIN-diode T/R switching, ensures fast CW break-in. Data and speech-processing delays are also minimized.

Standard DSP features include easy-to-adjust, per-mode RX/TX EQ; clean, punchy RF speech processing; full DVR capabilities; and several built-in data decode/encode modes. Direct-sampling technology results in an ultra-flat passband response for clean RX and TX audio. Since the signal chain is software-defined, the DSP can be field upgraded to add new algorithms and operating modes.

KAT4 ATU

The KAT4 ATU has a nominally 10:1 matching range. It includes 3 antenna jacks, any one of which can be selected as an input for one or both receivers.

Internal VHF/UHF module  (future option)

An expansion slot is reserved for a high-performance VHF/UHF module, with output of approximately 15 W. This module will support all modes.

Kit version

A no-soldering kit version of the K4 is planned for later release. Builders will learn about advanced radio technology as they proceed. All modules are pre-aligned and tested.

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MODELS

The K4 adapts to your needs, with three models to choose from.

Model K4Model K4DModel K4HD
Basic K4 transceiver provides 160-6 m, all-mode coverage; 100 W output; five receive RF sources; and wideband dual watch, allowing the main and sub receivers to be set for the same or different bands.Adds KDIV4 option, with a second set of band-pass filters and additional direct-sampling ADC module. This allows the two receivers to use different antennas – a requirement for diversity receive. Having two sets of band-pass filters also optimizes signal handling when the receivers are on different bands and/or antennas.Includes all of the above, plus our dual superhet module, the KHDR4. Ideal for competitive field day, contesting, and DXpedition stations. Each superhet receive section includes two crystal filters: one SSB/data bandwidth, one CW bandwidth.  The superhet’s 8 MHz IF has excellent dynamic range, so additional crystal filters are not required.STANDARD FEATURES

Size:  4.5”H x 13.5”W, 10” D

Weight:  Approx. 10 lbs

Supply Voltage:  12-15 VDC

Current:  ~2 A RX, ~18-23 A TX

Frequency Range:  100 kHz – 54 MHz (VHF/UHF range to be determined*)

Stablility:  +/- 0.25 ppm (TCXO)

Modes: CW, SSB, AM, FM, Data

LCD:  7” color; touch & mouse control

Text modes: CW, PSK31/63, RTTY

KAT4 ATU:  10:1+ range; 3 ant. jacks

RX antenna sources:  Up to 5

A-to-D Converter(s): 16 bits
I/O:  USB-A x3, USB-B (two virtual com ports + audio), RS232 (DE9), Ethernet, HDMI. front/rear mic, front/rear phones, LINE in/out, speakers, PTT in, KEY out, paddle, key,  ACC,12 V out.

CW QSK:  Silent, PIN-diode switched

Other: RX/TX EQ, real-time clock,100% remote control including panadapter data, remote antenna switch control*, custom in-box software apps*

 

 

K4_Brochure-print_Lutz

Hinweis zum Beitrag von Georg DJ3AA, danke!

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