Low-noise RF amplifier 100 kHz – 4 GHz ZK04-UM Zeenko UM Series, USB-C
ID: 1201358
5902186333857
zł58.34
Tax included
zł47.43 tax excl.
Zeenko ZK04-UM is a compact low-noise RF amplifier operating in the 100 kHz – 4 GHz range, powered via USB-C, featuring high linearity and low noise levels. Ideal for amplifying antenna signals or as a preamplifier for spectrum analyzers such as the tinySA ULTRA, especially above 3.5 GHz.
Description
The ZK04-UM is a wideband low-noise amplifier (LNA) powered via USB Type-C, part of the UM series from Zeenko. The device operates in the frequency range from 100 kHz to 4 GHz, offering moderate gain tailored to practical applications and a very low noise figure (NF). The high-PSRR LDO regulator effectively suppresses power-supply noise, resulting in better signal quality compared to standard USB-powered modules.
The module features a shielded system enclosure, a compact design, and the ability to adjust supply current by changing an external bias resistor. It is ideal as an antenna amplifier or a preamplifier for spectrum analyzers, enhancing sensitivity for devices such as the tinySA ULTRA.
Properties
- Frequency range: 100 kHz – 4 GHz
- Power supply: USB Type-C, 5 V
- Supply current: 26 mA (adjustable via bias resistor)
- Gain:
- 25 dB @ 100 kHz / 5 MHz
- 23 dB @ 10 MHz
- 21.5 dB @ 100 MHz
- 18 dB @ 1 GHz
- 14 dB @ 2 GHz
- 11 dB @ 3 GHz
- 9 dB @ 4 GHz
- Noise figure (NF):
- 2.3 dB @ 10 MHz
- 1 dB @ 100 MHz
- 0.7 dB @ 1 / 2 / 3 GHz
- 1 dB @ 4 GHz
- OP1dB (1 dB compression point):
- 13 dBm @ 10 MHz
- 16 dBm @ 100 MHz
- 17 dBm @ 1 / 2 GHz
- 18 dBm @ 3 GHz
- 17 dBm @ 4 GHz
- OIP3 (third-order intercept point):
- 22 dBm @ 10 MHz
- 27 dBm @ 100 MHz
- 26–28 dBm @ 1–4 GHz
- Power interface: USB-C
- Enclosure: shielded, compact
- Notes: low power, low noise, recommended moisture protection for outdoor use
- Compatibility: may replace SPF5189Z, SPF5043Z modules
1201358
Manufacturer BTC Korporacja sp. z o. o. Lwowska 5 05-120 Legionowo Poland sprzedaz@kamami.pl 22 767 36 20
Responsible person BTC Korporacja sp. z o. o. Lwowska 5 05-120 Legionowo Poland sprzedaz@kamami.pl 22 767 36 20
Other products in the same category (16)
Stereo audio amplifier based on the TPA3116D2 chip. It can be powered with the voltage from 12 to 26 V and has two outputs with a power of 120 W
zł46.70
24h
Available quantity: 46
Available
Zeenko ZK05-UM is a wideband low-noise amplifier with high gain and excellent linearity, operating in the 100 kHz – 6 GHz band. Powered via USB-C, it offers a low noise level and high overload resistance, making it a suitable choice for RF applications, antenna systems, and the input stages of spectrum analyzers.
zł58.35
24h
Available quantity: 5
Available
Class D mono audio amplifier module with MAX98357 chip. It can work with a 4 to 8 Ω loudspeaker with a power of up to 3 W and communicates via the I2S interface. modMAX98357
zł11.89
24h
Available quantity: 6
Available
Class D digital audio amplifier with Bluetooth module. It has two channels with a power of 50 W and can work with speakers from 4 to 8 Ω. It is powered with the voltage in the range from 9 to 24 V. NS-01G
zł135.42
4 weeks
No product available!
Audio amplifier based on the TPA3255 system with a power of 600 W with an active filter. Dedicated to the bass column (subwoofer)
zł273.64
4 weeks
No product available!
The board has a class D amplifier onboard that can drive 2 channels of 4-8 ohm impedance speakers at 20W each. Adafruit 1752
zł104.89
4 weeks
No product available!
HiFi stereo tube amplifier based on 6J1 and 6P1 tubes. Designed for use with loudspeakers up to 3 W and an impedance of 4 Ω or 8 Ω
zł613.40
4 weeks
No product available!
Audio module with DAC converter and mono amplifier, designed to work with the Raspberry Pi. Pimoroni PIM541
zł77.44
24h
Available quantity: 4
Available
Audio preamplifier based on the NE5532 chip. Powered with DC voltage in the range from 9 to 35 V (does not require symmetrical voltage)
zł15.47
4 weeks
No product available!
A stereo tube preamplifier based on 6K4 tubes. Designed for use with active speakers or an additional amplifier and passive speakers. SUCA-AUDIO TUBE-T1
zł253.08
24h
Available quantity: 3
Available
Class D PAM8403 stereo digital audio amplifier module. The system allows you to connect two speakers from 4 to 8 Ω with a power of 3 W per channel. modPAM8403
zł2.36
24h
Available quantity: 5
Available
A set with an audio amplifier with a power of 350 W dedicated to the bass column (subwoofer)
zł118.54
4 weeks
No product available!
Class D stereo digital audio amplifier module PAM8403. The system allows you to connect two speakers with an impedance from 4 to 8 Ω and a power of 3 W
zł4.33
4 weeks
No product available!
Module with class D mono audio amplifier designed for QT Py and Xiao boards. It is based on the MAX98357 system and can work with a loudspeaker from 4 to 8 Ω with a power of up to 3 W. It communicates via the I2S interface. Adafruit 5770
zł25.90
24h
Available quantity: 1
Available
TPA3110 digital stereo audio amplifier module. The system allows you to connect two speakers with an impedance from 4 Ω to 8 Ω and a power of 15 W
zł14.49
4 weeks
No product available!
Audio amplifier module with three output channels. It can be powered with the voltage from 12 to 18 V and has two outputs with a power of 10 W (left and right) and one with a power of 20 W (bass)
zł43.21
24h
Available quantity: 3
Available
Zeenko ZK04-UM is a compact low-noise RF amplifier operating in the 100 kHz – 4 GHz range, powered via USB-C, featuring high linearity and low noise levels. Ideal for amplifying antenna signals or as a preamplifier for spectrum analyzers such as the tinySA ULTRA, especially above 3.5 GHz.