Elecraft K4HD

Direct Sampling SDR HF/VHF/UHF Transceiver

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The basic Elecraft 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.

The Elecraft K4D 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.

The Elecraft K4HD 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.

General characteristics

HAM bands
160m  80m  60m  40m  30m (WARC)  20m  17m (WARC)  15m  12m (WARC)  11m (CB)  6m  2m  70cm  10m 
Frequency stability
±0.25 p.p.m. (TCXO)
Tuning steps
0.001 kHz

Receiver

RX-range
0.1-54 MHz (2 m/70 cm optional)
Modulations
AM   FM   CW   USB   LSB   RTTY   Digital (other)   PSK31/63  
Sensitivity
?
Selectivity
?
Filters
?
Receiver system
Direct-sampling SDR
IF-frequencies
?
Image rejection
?
Audio output
?

Transmitter

TX-range
10-160 m + WARC / 6 m (2m / 70cm optional)
Modulations
AM   FM   CW   USB   LSB   RTTY   Digital (other)   PSK31/63  
RF-Output
0.1-10 / 0.1-100

Connections

Antenna
SO-239
Impedance
50Ω
Other
-

Electrical

Power requirements
12-15V DC
Current drain RX
2 A
TX
23 A max

Physical

Manufactured
Between 2019 and 20xx in USA
Dimensions (w×h×d)
343 × 114 × 254 mm (13.50 × 4.49 × 10.00 in)
Weight
4.54 kg (10.0 lbs)
Form factor
Base Station

Other features

Memories
144 channels in 1 bank(s)
Usage
Amateur / Ham radio operators
Features + options
Modular hybrid design for easy upgrade and expansion
DSP 7" color touch
display
HDMI video output
Ethernet jack
Remote control
Single or dual panadapter
USB-jacks
RS-232C
Transverter I/O
Iambic keyer
Twin RX
Real-time clock
Built-in help system
Linux-based computing module
Accessories
?
MPN
ELECRAFT-K000004HD

Manuals, diagrams and brochures

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