Let's disassembly and reassembly the Front panel Unit of a Xiegu G90

Karl   DJ5IL, asked me about the access into the Front Panel unit of Xiegu G90.

Instead of writing a long story I decided to play a little with the Camera and here is the result:

EasyPic Fusion v7 + boards

De vanzare placa de dezvoltare pentru DSPic produsa de MikroE, EasyPic Fusion v7.

Pret: 170 EUR / 850 Lei, transport separat.

Include:

- afisaj TFT cu Touch Panel

- placa cu PIC24EP512GU810

- doua placi CLICK cu nRF24L01P.

Placa a fost folosita moderat, pentru dezvoltarea a doua proiecte.

Ecranul este acoperit cu folie; folia are urme de utilizare insa afisajul si digitizorul sunt impecabile sub folia de protectie.

Software-ul de suport se gaseste pe un stick USB.

Preferabil livrare personala in YO3, expediez in tara prin FanCurier ramburs, pachet cu asigurare, cu plata transportului in avans in cont.

-Placa poate suporta dezvoltarea pentru trei arhitecturi din familiile dsPIC33, PIC24 si PIC32.

-Include module pentru: Multimedia (MP3 Codec cu In/Out), Ethernet, USB (2USB<>UART, USB-OTG, CAN, UART s.a.m.d.

-Programator si debugger onboard.

-On Board Serial Flash si EEPROM.

-Sursa de alimentare din USB sau externa cu stabilizator On Board.

-Porturile MCU  setabile Tie Up, Open, I/O, LED.

Mai multe detalii: https://www.mikroe.com/easypic-fusion:

Can ICOM IC-7000 microphone be used with Xiegu G90?

 Yes, it can be use!

As a matter of fact, any RJ-45 ICOM microphone can be used with Xiegu G90 transceiver.

Of course, the ICOM remote microphone is using a different serial protocol to communicate with the radio so the function buttons WILL NOT work.

Basic PTT and modulation WILL work. 

I also tried with the microphone from other radio, from ic-703 and IT DOES WORK.

This is the proof, in a small video I made this evening after a fellow ham said on FB his combination is not working.

Here are some comments about the Xiegu G90 RJ45 microphone pinout:

ATTENTION!!!!

The RJ45 is the female connector as seen when you look to the front panel!

MDATA - This is the serial Data from Microphone to Front Panel Unit. Pretty similar to CAT protocol but with some differences. It is not ICOM Compatible but the voltage level is the same.

GND - Ground. Not Shield.

MIC - Audio signal from microphone to radio (HOT signal).

MICE - Microphone ground, the shield of the microphone signal wire.

PTT - PTT Switch, goes to Ground to switch the radio into TX.

MSVSW - This is a pin used on ICOM radios to identify the microphone type. Not used in Xiegu G90.

NC - Not Connected

8V - 8V from the 9V LDO. Actually, around 8.7V on the G90.

Thank you!

Silently, my blog got over half Million visitors since I began counting and over 1 Million views since the first post, 10 years ago.

WOW!

To all of you, Thank you for the visit and I hope you got something helpful and interesting here.

To those who commented and never got an answer, I am sorry I missed the comment but the gmail algorythm made a lot of those comments go into spam folder... from time to time I check the comments and I saw some made a few years ago... Please, use the email if there is something where time is important. use mycall @gmail.com

73 de YO3HJV

QCX CW

 YO3HEX, Dexter gave me a nice present! 

A QCX CW pocket transceiver. 

It is able to put around 4-5W into one band and it is working only CW.

It was an awesome project for an afternoon and, after some 4-5 hours, the radio was ready, tested, the fine tuning made and on the second day I already made two CW contacts!

Here are some pictures from my work:

An eagel eye will notice the OpAmp misplaced (the right-side one).

One ferrite toroid snaps. Broke in three parts. Fortunately, I got a lot o this Type 2 toroids. Unfortunately, they are at my second lab, too far away for a lazy ham like me...

This is why I used ol' SuperGlue..

The project is completed. The OpAmp, still upside down.

 

Powered the TRX, current surged to around 1.5 Amps. Fortunately, I start all my experiments on my special design lab power source so no irreversible damage occured.

I found the fault pretty easy, the area was warm. I took out the OpAmp, put instead a 2x4 socket to check if the original circuit survived. 

I took the time to change the LCD with a Yellow-Green one and the original contrast trimpot with a 10KOhm one for a better range of contrast.

After I put the circuit on the right position, there was no damage so I took out the socket and placed the OpAmp directly on the PCB.

The broken toroid is doing well after SuperGlue surgery! 4W at 12V, this is nice.

Thanks to Mihai, YO3ISL, the radio got a nice case!