Le migliori offerte per Modulo di riduzione di tensione, Modulo di aumento di tensione,Frequenzimetro

Brightnoise 18/01/2023

Versatile DC-DC converter, works from 4 volt to (at least, what I tried) 20 volt. Output is clean DC voltage from low to high; adjustable. One technical minus point: the output can peak up to 45 volt, unwanted, when input voltage is lower than 4 volt. Minus point for this individual case: I had to pay "inklaringskosten" because the EU customs say that Banggood did not pay that. Despite their promise. I think Banggood will solve this problem.

Modulo convertitore automatico Geekcreit® DC-DC Boost Buck regolabile passo-passo XL6009 adatto per pannelli solari

US$6.99 US$8.99

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3Pcs originale Hiland 1Hz-50MHz Cinque LED Display contatore di frequenza con il kit Frequency Oscillator

US$25.40 US$26.99

D: How do I set an offset of for example 10.7 MHz in a receiver to display not the oscillator frequency but the actual receiving frequency? Do I need a pic programmer for that or can it be done without changing the program?

Domandata da Brightnoise il 2021-10-22 11:59:04

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Brightnoise 24/01/2021

This is a real receiver with the Russian software! Software version 1.0C is an improvement over the more standard demosoftware! Low interference from internal electronics is also a positive point. One negative point is the low sensitivity of the touchscreen and some misalignment in the touchscreen positions. Over-all: good receiver.

Radio SDR Malachite DSP Ricevitore SDR con Touch Screen da 3.5" AM/SSB/NFM/WFM analogicamente modulato 50KHz-2GHz

US$172.49 US$179.99

9

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Brightnoise 23/12/2020

In the product description missing: "Is the program present in the delivered hardware?". Answer: yes, the tuner works out of the box, after the diy soldering etcetera. One very important remark: the connection between tuner board and display unit is with four wires (plus, minus, clock and data). ----> The clock and data wires need a cross-connection in the wires (the sequence of the wire connections on the board is different on the display unit). I had to look for this, because the display was not working initially.

MINI 0.96 pollici OLED ATU100 Automatic Antenna Tuner 100W Automatic Daytime Tuning Kit

US$38.69 US$43.99

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Brightnoise 03/12/2020

Good amplifier, clear sound. High efficiency. Use this with a 19 volt laptop supply with max current of 3.5 ampere and output power of two times 25 watt is easily possible thanks to the high efficiency. Remarkable low radio interference on medium wave and other AM frequencies! Stays cold/cool with higher output. Good choice also for Li-Ion (4 cells in series) and portable use. Frequency range 19 Hz to 25 kHz zero dB when loaded with resistor. Some deviation of frequency response with complex load, up to max plus and minus 2 dB in the 10 to 16 kHz range with some speakers. Happy with the small size too. Recommended.

Modulo amplificatore di potenza digitale stereo 2.0 Bluetooth 5.0 ZK-502H 50Wx2 TPA3116D2 HIFI

US$20.78 US$21.99

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Brightnoise Just for your information: the delivered firmware for my tuner was version 3.0 (up to date) and works as explained in the manual by N7DDC.

Brightnoise 23/12/2020

In the product description missing: "Is the program present in the delivered hardware?". Answer: yes, the tuner works out of the box, after the diy soldering etcetera. One very important remark: the connection between tuner board and display unit is with four wires (plus, minus, clock and data). ----> The clock and data wires need a cross-connection in the wires (the sequence of the wire connections on the board is different on the display unit). I had to look for this, because the display was not working initially.

MINI 0.96 pollici OLED ATU100 Automatic Antenna Tuner 100W Automatic Daytime Tuning Kit

US$38.69 US$43.99

1

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Brightnoise 04/12/2020

Incredible good product. Also selective measurements can be done (fieldstrength). Helpfull in finding interference sources. I am very happy with this spectrum analyser. Accuracy without calibration is already within a few dB. Actual lowest frequency in my spectrum analyser is 25 kHz!

100 kHz-350 MHz 2.8 Pollici Palmare a due ingressi Analizzatore di spettro minuscolo Analizzatore di spettro touch screen 100 KHz-350 MHz Frequenza di ingresso

US$79.91 US$76.99

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Brightnoise 03/12/2020

Easy to use and accurate. Resolution 0.1 degrees celsius. Narrow measurement bundle to measure temperature at ceiling: very usable for leakage of heath in a house.

Termometro digitale infrarosso senza contatto FUYI -50 ~ 580 ℃ Termometro laser portatile a mano con termocoppia tipo K

US$23.09 US$23.99

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Brightnoise 03/12/2020

Well performing. One outside temperature transmitter can be received on two of these units, in different rooms. That was important for me. Display is clear and easy to read.

Orologio da tavolo digitale FanJu FJ3364 Stazione meteo Sensore wireless Igrometro Termometro LED multifunzione

US$25.40 US$26.99

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FNIRSI 1C15 Oscilloscopio digitale professionale. Tasso di campionamento di 500 MS/s. Larghezza di banda analogica di 110 MHz. Supporto di memorizzazione delle forme d'onda.

US$71.99 US$72.99

D: Missing in the specifications is the input impedance on the connector: resistance and capacitance. For table-top oscilloscopes this is standard 1 Mega Ohm and 100 pF in parallel. With ten-times attenuating probe the input impedance CAN be 10 Mega Ohm inparallel with 10 pF, requiring a special probe. Please add the input properties to the specification.

Domandata da Brightnoise il 2020-10-29 01:00:15

wuchuangbin Hello friends, you can consult customer service

2020-11-06 12:46:56 Utile

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Brightnoise 08/06/2020

Today I received the spectrum analyser for 2.4 GHz. Incredible small. The analyser works, but can't be used as a sniffer. I am very disappointed in the sensitivity: I have not seen more than a few millimeters line lengts. My router is 300 mW and even close to the antenna(s) there is only a small output on the display. In 3 meters distance there is NO display frequency occupation visible . Appearance is good but display is mounted under an angle and glued; can't be corrected. It is a spectrum analyser: what a pity that the sensitivity is so poor that it can't be used as sniffer.

Analizzatore di spettro portatile ad alta sensibilità 2.4G Banda OLED Display Tester Meter

US$18.47 US$19.99

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Brightnoise 08/06/2020

Five star cable. One remark: cable is not really flexible; just that you know it.

BNC maschio a SMA maschio Connettore Prolunga 50ohm Lunghezza Opzionale

US$3.99 US$8.99

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Brightnoise 08/06/2020

Good ferrite clamp. Induction 750 nH * N^2 (2 windings is 3 microHenry, etc).

5Pcs 13mm Nero Cavo Filo Morsetto a scatto Clip RFI EMI Filtri antirumore EMC Custodia in ferrite

US$9.34 US$16.81

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Brightnoise 08/06/2020

Accurate and sensitive device! According specification. Power supply voltage is not critical (no offset from Vcc-variation!). Really accurate measurement device! Can also be used as receiver: connect antenna to input and audio amp to output: audio from strongest AM-signal is audible; LOG-conversion works as automatic gain control. With antenna tuner (for selectivity) it is a nice monitor receiver. I am very happy with this power meter.

Modulo AD8307 di rilevamento logaritmico del misuratore di potenza da 0,1 ~ 600 M -75 ~ + 15 dBm

US$18.47 US$19.99

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Brightnoise 08/06/2020

Perfect solder paste; smells like expected and solder flows as with the best paste.

50G Pasat di Flusso di Saldatura Gel di Grasso per Saldatura

US$8.07 US$10.99

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Brightnoise 26/05/2020

Ferrite clamp. Induction 750 nH multiplied with N^2 (two windings give 3 uH, etc).

5Pcs 7mm Nero Cavo Filo Morsetto a scatto Clip RFI EMI EMC Noise Filters Custodia in ferrite

US$5.00 US$9.00

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Brightnoise 26/05/2020

This cable is value for money. Cable RG-174. Attention: the connector is RP, which means reverse male-female (not standard SMA).

Cavo di prolunga antenna Wifi RP-SMA maschio a femmina RG174 1M / 5M per scheda di rete wireless, router AP

US$9.19 US$9.99

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Brightnoise 26/05/2020

This cable is value for money. Cable RG-174, nearby 50 Ohm, loss 2.5 dB at 30 MHz. Attention: the connector is RP, which means reverse male-female (not standard SMA).

20M RP - SMA Cavi a prolunga senza fili da maschio a femmina Antenna

US$19.62 US$20.99

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Analizzatore di rete vettoriale NanoVNA 50KHz - 900MHz Display LCD digitale Analizzatore di antenne HF VHF UHF Onda stazionaria Alimentazione USB

US$56.00 US$75.00

D: هل يقوي شبكه الهاتف النقال لان شبكه الاتصال ظعيفه عندي

Domandata da عبدربه عباد il 2019-08-29 10:51:50

Brightnoise Google Translate: "Do you strengthen the mobile phone network because the network connection I have thin (?)" What are you asking exactly? This equipment has no network or mobile phone connection. There is a USB-connection with a computer.

2019-10-14 12:50:45 Utile

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Brightnoise 25/01/2019

Usable solder wire, but flux is smellling different from usual and tin wire is not as good as top brands. Good price performance, but not for all applications.