Видео 18
Просмотров 30 529

Quansheng UV-K5(8) Stock Hardware + IJV HF CB/HAM AM/SSB Receive Test vs IC-7100

4:14

Convert Quansheng UV K5 Battery Eliminator to USB-C

1:43

Battery Eliminator for Quansheng UV-K5 handheld radio - RX Noise Test

2:25

Car RF Noise source troubleshooting: Handheld Ham Radio Receiver Overloads When Car Ignition is On

2:21

Quansheng UV K5(8) - 999 Channels Hardware mod - EPROM replacement

5:59

ICOM IC7100 TX unlock

1:44

Finally I can see what I'm doing - Andonstar AD210/GLGTEK GLG210 Microscope

I found Andonstar AD210 Digital Microscope 10.1" on sale and the price was good enough that I finally ordered it.
I decided to try it in my first project: USB-C adaptor for my 19.5V monitor, so I can use car USB-C charger to power my monitor.
Overall I'm happy with the purchase.
Good enough for a hobbyist like me. For soldering work it's much better than my phone and finally I can see what I'm doing :)
My first impressions:
Pros:
- Big screen with good image quality;
- Price ($61 on sale with fast free delivery);
- Plenty of space between working plate and lens;
- Record video to microSD card (32GB card included);
- Adjustable lights.
Cons:
- Image quality on recorded video is not as good
as on scre...

Видео

Quansheng UV-K5(8) Stock Hardware + IJV HF CB/HAM AM/SSB Receive Test vs IC-7100

4:14

Quansheng UV-K5(8) Stock Hardware + IJV HF CB/HAM AM/SSB Receive Test vs IC-7100

Просмотров 1,7 тыс.4 месяца назад

I decided to check if Quansheng UV-K5(8) (Stock Hardware IJV 3.13 Firmware) can be used as 10m and 11m HF AM/SSB receiver. I used IC-7100 as a reference radio. Both radios were connected to the same EFHW for 40m (that works on 10m as well) using Alpha-Delta antenna switch. That way I could compare real signals. 11m CB stations were used to test AM, and Ham stations for 10m SSB test.

Convert Quansheng UV K5 Battery Eliminator to USB-C

1:43

Convert Quansheng UV K5 Battery Eliminator to USB-C

Просмотров 2 тыс.4 месяца назад

I decided to convert UV-K5 12V battery eliminator to USB-C Why? 1. I want to power radio at home without battery from USB-C. 2. My adapter heats up quickly on TX as radiator inside is small and it have to convert more than 5W into heat (14v-8v)*1A. I’m going to configure USB-C board to request 9V instead of 12V, it should decrease heat/power loss to about 1W. 3. My adapter power cord output is ...

Battery Eliminator for Quansheng UV-K5 handheld radio - RX Noise Test

2:25

Battery Eliminator for Quansheng UV-K5 handheld radio - RX Noise Test

Просмотров 4614 месяца назад

I bought a battery eliminator for my car and decided to check if it adds any noise on receive. After testing I decided to take it apart as well. My conclusion that it's good for RX, but it heats up quickly on TX and I would at least add a bigger radiator if radio is used for TX. In my case I plan to make USB-C adapter from this eliminator. Also it looks like these adapters are not the same. Som...

Car RF Noise source troubleshooting: Handheld Ham Radio Receiver Overloads When Car Ignition is On

2:21

Car RF Noise source troubleshooting: Handheld Ham Radio Receiver Overloads When Car Ignition is On

Просмотров 1425 месяцев назад

I was unable to listen to Quansheng UV-K5 in my car when car ignition is on. Receiver overloads as soon as car ignition turned on. When ignition is off radio worked okay. I understand that it’s $20 radio and no good frontend filters there. Earlier I built a bandpass filter and got almost no improvement. Today I got my birthday gift - TinySA, and I decided to find a noise source in my car. After...

Quansheng UV K5(8) - 999 Channels Hardware mod - EPROM replacement

5:59

Quansheng UV K5(8) - 999 Channels Hardware mod - EPROM replacement

Просмотров 9 тыс.5 месяцев назад

I documented 999 channels hardware mod using IJV firmware and his tutorial. It works! As a beginner I made couple mistakes those took me a lot of time to figure out how to fix. Radio worked strange way, Chirp displayed errors for saved channels and firmware settings. After writing channels to the radio they were read with errors, all because my mistake. I documented my project and that video he...

1:44

ICOM IC7100 TX unlock

Просмотров 5495 месяцев назад

ICOM provides instructions how to do a modification that allows to transmit outside of US ham bands. Reasons why someone may want or need this modification are out of scope of this video. WARNING: This modification was made for educational purposes only. Please research your country regulations and proceed accordingly.

ICOM IC-7100 fried tuner output repair and fuse mod

2:58

ICOM IC-7100 fried tuner output repair and fuse mod

Просмотров 4485 месяцев назад

Recently I broke my IC-7100. I accidentally touched metal tuner body by tuner connector power center pin when radio was powered on. I heard a sound inside my radio and it became dead. I have basic radio-electronic knowledge and limited skills, but I decided try to repair my radio and get some experience. There is 5A fuse inside the radio, that was blown. After fuse replacing radio turned on and...

2m Bandpass Filter for Cheap Quansheng K5 Handheld Radio Connected to External Antenna

1:19

2m Bandpass Filter for Cheap Quansheng K5 Handheld Radio Connected to External Antenna

Просмотров 7 тыс.5 месяцев назад

I built my first 2m bandpass filter for Quansheng k5(8), and during testing noticed that it receives weak off band (air-band) signal with filter better than without filter even when this filter attenuates air-band signals by -14db (filter was designed to pass 142-148MHz band and filter out everything else). Probably FM broadcast stations overloads frontend so much, that even bad filter makes ra...