The LNA HF from F1OPA is a pre-amplifier and a low-pass filter (LNA), very powerful (+18dB to +20dB), with SMA Female connectors, for HF frequencies and short waves from 500 kHz to 30 MHz, with electrostatic protection (ESD) and LED operation indicator.
It makes it possible to significantly improve reception performance, in shortwave and on the HF amateur radio bands, using an RTL-SDR dongle with the Ham it up HF SDR converter, for example.
The power supply is to be made yourself by soldering 2 power cables (VCC + and -) on the board and supplied between 7V and 13V.
Comes with: 1 HFLNA F1OPA PCB board. Aluminum case available as an option.
This material replaces the LN4HF which is no longer manufactured.
Power supply: 7V to 13V DC
Frequency range: 500kHz to 30MHz
Reception gain: +18dB to +20dB
NF: 3.4dB @ 15Mhz
Impedance: 50 ohms
Electrostatic protection (ESD)
LED operation indicator
Antenna connector: SMA Female
Dimensions: 40 x 30 (excluding SMA connector)
Amateur radio design: F1OPA
2 years warranty*
The antenna input and output are tuned to 50 ohms, and there is no significant degradation with 75 ohm TV cables.
This preamplifier is very powerful and to be used with care, never use it near strong signals, nor emit a radio signal nearby, (FM radio, amateur radio station, walkie-talkie, pmr446, etc.) under penalty of "grilling" "the LNA and your HF or SDR receiver!
This LNA is also very sensitive to electrostatic discharges which can damage it.
How to protect the LNA from electrostatic discharges?
Electro-static discharge can damage the LNA if it is not protected or used properly.
1 - Never leave the LNA plugged in permanently or place it permanently behind an antenna on the mast
2 - Disconnect the antenna and make sure the LNA and the antenna are properly grounded, before reconnecting the antenna, discharge the static electricity from the cable
3 - This short waves LNA is equipped with ESD protection by BAV99 diode, so in the event of lightning it is the diode that will be damaged but not the rest of the LNA card.
No LNA will be taken back or exchanged for misuse.
* The warranty does not cover damage that may result from a mounting error, incorrect antenna adjustment (SWR), maximum input power not respected, or a short-circuit of the power supply or coaxial line and damage from electrostatic discharge.
|Elie on 2020-04-10|
Je voudrai acheter un préampli pour mon rsp1a, comment faire pour avoir ce produit ?
Le récepteur SDR RSPA1 de chez SDRPlay dispose déjà d'une préampli et nous ne recommandons pas d'en ajouter un 2ème.
Cela risquerait de saturer le récepteur et simplement augmenter le niveau de bruit et le QRM de manière importante en dégradant la qualité de la réception.
Nooelec's Ham It Up v1.3 is an up-converter HF, equipped with the 125Mhz filter soldered on the PCB and allows to listen to all MF / HF bands from 0.5 to 50 Mhz, in all modes of modulation, from a
SMA Male UHF Female (SO-239) Adapter.
Pigtail RF adapter SMA Male to SMA Male to connect for example a converter Ham it up to a HackRF One, or SDRPlay, and any device with a SMA female connector. Coaxial cable RG 316 50 ohms. Available
This Mini-Whip SDR active antenna allows reception of HF frequencies from 0 to 50 mhz with an SDR receiver.Compact in size, the mini-whip active antenna can be used independently with a 9-volt battery
This RF adapter allows is equipped with an SMA Male connector on both sides.It allows to connect for example 2 cables or connectors in SMA female.
This balun is the perfect accessory to connect a long wire antenna, for example with the converter HF SDR Ham it Up to listen shortwave and HF bands from 0.5 to 30Mhz, but this balun can work up to
Invented by G5RV amateur, R. Louis VARNEY published for the first time the technical documentation of its antenna in November 1966. The G5RV wire antenna have 2 versions: 1/2 half size, about 16
This band-cut filter is design by RTL-SDR.com, it blocks and reject broadcast FM band between 88 to 108 MHz with over 50dB of attenuation. Insertion loss is less than 0.5 dB between 0-1 GHz, and less
Diamond BU50 balun 1:1, genuine, operates from 1.7 to 40Mhz and allows to receive and transmit on HF bands.Technical data sheet of the HF BU50 balun:● Operating frequency from 1.7 to 40MHz● Impedance
This high-pass notch filter is designed by RTL-SDR.com and rejects the AM broadcast from 500 kHz to 1.7 MHz, with attenuation of more than 50dB. In fact, because of the attenuation, the filter is
This wide-band LNA preamp improves reception performance from 50 Mhz to 4 Ghz, it is based on SPF5189Z, with a noise factor of less than 1 dB.This LNA is designed to be powered by BIAS-T with a power
Wide-band LNA preamp, based on PGA-103+, to improve reception performance from 50 Mhz to 1500 Mhz, with a maximum gain of 20-24dB and a noise factor of 0.4dB.This VHF-UHF LNA offers a very good
The new version Nooelec Balun 1:9 v2 allows to add a wired or dipole antenna type to listen HF bands from 0 to 30Mhz from the Ham It Up converter, an SDRPlay receiver or equivalent covering the HF
This milled aluminum milled box is specially designed for the RF protection of PCBs from F1OPA Design: LNA VHF-UHF, Bias-T, 2.4Ghz amplifier, SAW 868Mhz filters, ADS-B, QO-100 2.4Ghz and HF LNA.Case
MLA-30 Plus magnetic loop active antenna for receiving HF bands from 500 kHz to 30 MHz.The MLA-30+ antenna can be used with the RTL-SDR V3 stick in direct conversion mode, with the Ham it up
Active Whip mini-antenna for receiving HF frequencies from 10khz to 30 mhz with an SDR receiver or a short and HF receiver.This active antenna need to be powered with 12V or 9-15V.Supplied with: 1 PCB
Stock and shipped from France
14 days to return, 2 warranty
Response within 24h to 72h
SSL, VISA, Mastercard, Paypal