ArijitHaldar
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ArijitHaldar 30/03/2022
Let me explain why I gave 5 stars. Importing Amateur radio to India can be a hassle...specially for new hams. Me included. I wanted to reach our local repeater...and my 5 watts was not enough. This model is just a glorified Baofeng radio with maximum wattage of about 20W if you use proper power supply. Nothing fancy. But its cheap. It gets the job done. And it sounds worably decent. The major advantage was...Banggood was able to deliver to me directly in India..within just a few weeks..via DTDC...without me requiring to go and clear it from customs office...which is a major boon for importing such a little radio..when you are just getting into the hobby. It weighs less than 2 glass paper weights..and its size is same as the Baofeng handhelds...just thinner. For programming, make yourself a RJ-45 to 4 wire jumper..then program it using an Arduino as the serial device using CHIRP. Power is through T-plug or Deans connector, which is easily available. I will update my comment if I face issues later. Nothing fancy for now. It just works. And it was within a student's budget.
BaoJie BJ-218 25W мобильное радио VHF UHF 136-174 400-470МГц Хам радио машина рация Walkie Talkie дальнобойный
US$67.99 US$99.99
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ArijitHaldar 30/03/2022
I am a Baofeng UV-5R user. Previously, I bought Nagoya NA-771 from Banggood. Based on my experience of the stock Rubber ducky vs the Nagoya, vs Retevis, my RX is comparable to the rubber ducky with this Retevis, but much better than the Nagoya. TX is better on the Rubber ducky than this for me. Others may have different results, but for me, the Baofeng stock antenna works really good (with a counterpoise). Do I repent buying the Retevis? Probably not. It works...just..no significant improvement. Do I repent buying Nagoya? Yes absolutely. The version of Nagoya on Banggood can't get signals which the rubber ducky can. If you just need a spare antenna for your handheld, go for this. If you need to get those signals that you are not getting now, make yourself any antenna you like...it will be much better when you fine-tune your antenna according to your needs. P.S.: The rubber gromet that they gave with this antenna was not needed...and not attachable too...to the UV-5R.
Retevis Высокая прибыль VHF / UHF Антенна SMA-F Retevis RHD-771 для KENWOOD BAOFENG UV-5R RETEVIS H777 RT5 Walkie Talkie Hf Transceiver C9030A
US$6.99 US$14.99
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ArijitHaldar 13/11/2019
Definitely a Chinese clone..not an original Nagoya-771. If you are searching for the rubber ring, it is not provided. But..on the other hand, it fits perfectly, and on testing its performance, reception was obviously better than the stock rubber ducky. Could hit some nets more than 8 km away from me in urban area. I don't regret the buy.
на na-771 SMA В-Ф 2.15 дби с высоким коэффициентом усиления двойной сегмент Интер-Телефон-Радио антенна для baofeng УФ-5r кг-uvd1
US$4.99 US$6.99
0
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ArijitHaldar Update after 3 years...I didn't know about counterpoise back then. Rubber ducky with a counterpoise much much better than this. This antenna even fails to receive some signals that the rubber ducky with proper counterpoise does...let alone transmit. I am thoroughly regretting my decision for buying this now

ArijitHaldar 13/11/2019
Definitely a Chinese clone..not an original Nagoya-771. If you are searching for the rubber ring, it is not provided. But..on the other hand, it fits perfectly, and on testing its performance, reception was obviously better than the stock rubber ducky. Could hit some nets more than 8 km away from me in urban area. I don't regret the buy.
на na-771 SMA В-Ф 2.15 дби с высоким коэффициентом усиления двойной сегмент Интер-Телефон-Радио антенна для baofeng УФ-5r кг-uvd1
US$4.99 US$6.99
0
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ArijitHaldar 21/10/2019
Perfectly useful to make homemade reflow oven. The long probe reaches the central portion of the oven. Nicely priced..
Вам нужно перевести английский текст на русский язык.
US$7.99 US$9.99
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ArijitHaldar 09/06/2019
Bought 2 pieces. Both working perfectly. Best buy for this price range.
FANBIYA USB3.1 Type-C для USB3.0 OTG адаптер для MacBook HUAWEI Nexus Xiaomi Google Pixel
US$2.46 US$4.99
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ArijitHaldar 15/12/2018
Nice packaging.Pretty small. Hope it will work on my drone build
Geekcreit® 5V To 3.3V DC-DC Step Down источник питания Buck Module AMS1117 800MA
US$5.99 US$7.99
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30W SMD2835 Outdooors Smart IC LED COB Chip Bead DIY прожектор Лампа 220V
US$5.14 US$6.29

Q: What sized heat sink does pure white 30W variant need?

Задавает ArijitHaldar на 2018-12-15 08:02:45

Zeitgeist You can refer to the chip size.

2019-01-03 12:15:54 полезный (0)
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ArijitHaldar 15/12/2018
Perfect for travellers
Honana HN-PB2 9 Цвета Модный Кожаный Путешественник Паспорт Держатель Кредитные Карты Билеты Органайзер
US$6.29 US$20.99
0
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ArijitHaldar 15/12/2018
Considering, that its size is just a bit longer than your thumbnail, this 10-DOF chip is a perfect beast for RC aerial vehicles
Модуль датчика девяти валов GY-91 MPU9250 BMP280 ускорения гироскопа компаса
US$6.37 US$13.99
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ArijitHaldar 15/12/2018
It is a bit overpriced, but still good. The rotation gives a stepped feedback to your fingers, which gives a nice indication of how much you are rotating
Модуль энкодера KY-040 Rotary Decoder AVR PIC
US$4.99 US$7.99
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ArijitHaldar 15/12/2018
The magnet is too weak to magnetize a screwdriver for more than 3-4 seconds
Xiaomi Mijia Wowstick Намагничивающий размагничиватель магнитов для Mijia комплектов 1FS / 1F + / 1P + Электрические отвертки
US$9.99 US$10.99
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ArijitHaldar 14/12/2018
Lemme tell its flaws first. The springs on both sides of it came rusted. The rubber piece meant to pull the holding wire out is fragile. Do NOT use it. Just pull the wire out with your fingers. It will be fine. But the holding pressure is pretty good. Your smartphone won't fall, though the wider your phone is, the more pressure it will exert. So, any fancy covers on your phone might get dented due to this.
Сотовый телефон камера Зажим для стойки Штатив Адаптер крепления держателя кронштейна
US$6.99 US$8.99
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ArijitHaldar 14/12/2018
Got the shipping from China to India within a month. Looks good. Tested the continuities, and all seems fine. Haven't powered it up yet though. The metal back-plate on which the PCB is made can be screwed on a nice heatsink, with just screws and some thermal grease. One issue though, the terminal marked as "N", which most probably symbolises Neutral, as can be seen in the image as the black wire connected to it, that terminal is in series with a fuse. Obviously, connecting a fuse with neutral makes no sense, so, connect the LIVE with it, if you plan to buy one.
30W SMD2835 Outdooors Smart IC LED COB Chip Bead DIY прожектор Лампа 220V
US$5.14 US$6.29
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ArijitHaldar 09/12/2018
This Thermometer-cum-Hygrometer has both PROS and CONS: PROS: 1. Small and lightweight, extremely portable. 2. Doesn't require any power source or liquid-leveller. 3. Temperature pointer is pretty quick. CONS: 1. Plastic stand is not very sturdy. 2. Couldn't notice any significant changes in the Hygrometer pointer, from the image shown (So, couldn't understand if it was actually working or not). 3. Wall hanging provision gives very little space for hooks.
A7 крытый открытый мини-влажная влажность гигрометр термометр измеритель температуры
US$5.99 US$9.99
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