Hello im building a remote control and I need a rf mixer for that. Where can I find some cheap ICs.At first I wanted to buy the NE602 chip but it isnt available anymore unless you pay big cash from ebay and my country is very far away from the US so I pay a lot of extra cash for international couriers.

Well i am situated in Europe if you can provide me with a alternative I will be most grateful.

 

Hello im building a remote control and I need a rf mixer for that. Where can I find some cheap ICs.At first I wanted to buy the NE602 chip but it isnt available anymore unless you pay big cash from ebay and my country is very far away from the US so I pay a lot of extra cash for international couriers.

Well i am situated in Europe if you can provide me with a alternative I will be most grateful.

https://aliexpress.ru/item/10050122...w.productlist.search_results.1.c90264acDDHYn5

 

https://aliexpress.ru/item/10050122...w.productlist.search_results.1.c90264acDDHYn5

View attachment 372994

Thanks I probably missed that

 

Hello im building a remote control and I need a rf mixer for that. Where can I find some cheap ICs.At first I wanted to buy the NE602 chip but it isnt available anymore unless you pay big cash from ebay and my country is very far away from the US so I pay a lot of extra cash for international couriers.

Well i am situated in Europe if you can provide me with a alternative I will be most grateful.

Why do you need a mixer ?
What frequency, bandwidth and RF power remote control are you looking for ?
Most if not all domestic applications have single chip solutions. .

 

Why do you need a mixer ?
What frequency, bandwidth and RF power remote control are you looking for ?
Most if not all domestic applications have single chip solutions. .

im building a AM transmitter/receiver.I also need 2 antennas and the rest I already have them.

 

Hello,

At wich frequency should the transmitter and receiver work?
What kind of signal should be transfered?
There are ready made modules available.

https://www.box73.de/index.php?cPath=313_237

Bertus

 

In the United States there is a 10 milliwatt limit for RF transmissions unless you have a license. Legally it's usually not an issue.

 

In the United States there is a 10 milliwatt limit for RF transmissions unless you have a license. Legally it's usually not an issue.

Let's hope the user is sticking to the limits ...

 

As a kid when I started experimenting with electronics, my dad was fond of saying turn it off when his TV reception was screwed up. Sure enough, his TV reception cleared after he said it.

 

Hello,

At wich frequency should the transmitter and receiver work?
What kind of signal should be transfered?
There are ready made modules available.

https://www.box73.de/index.php?cPath=313_237

Bertus

Well i think it would be useful practice for me and would be good to learn practical skills to not buy a packaged transmitter/receiver.

 

So I have ordered several packages of the NE602AN IC chip which is a mixer.




I will be using it in single ended mode which means im going to ground one pin number 2.I was searching through the internet and I found that I need to put a small capacitor in between pin number 2 and gnd if I want to to do this.Why? Does anybody know here? Note that the chip expects both inputs(1 and 2) to be AC.

 

Instead of "searching through the internet", how about starting with the actual data sheet that tells you how to do it straight from the horse's mouth?

https://www.nxp.com/docs/en/data-sheet/SA602A.pdf

 

Well i think it would be useful practice for me and would be good to learn practical skills to not buy a packaged transmitter/receiver.

I agree with the general "it's good to learn by practise"
But
There are legal constraints on transmitting / receiving in some form most / all countries.
We are not allowed to help you to break the law.
Which is why we want to know what frequency , power and what is your intent !
You seem to be very vague on this which is worrying .

You have chosen RF , which is just about the hardest part of electronics .
Even the PCB becomes a big part of the circuit.
Bend the traces one way you have an inductor , bend them different they are capacitive ,

What's your level of experience , expectations and expertise ?

 

Well i am situated in Europe if you can provide me with a alternative I will be most grateful.

MAX2680, MAX2681 or MAX2682. These have a somewhat higher current consumption than the NE/SA602 but also better IM specs. All ports are single ended.

 

https://aliexpress.ru/item/10050122...w.productlist.search_results.1.c90264acDDHYn5

Unfortunately these look as fake as it gets. Package surface looks bad and the marking looks even worse. The chances to find genuine NE/SA/602/612 in DIP package are very slim to non-existent.

 

I agree with the general "it's good to learn by practise"
But
There are legal constraints on transmitting / receiving in some form most / all countries.
We are not allowed to help you to break the law.
Which is why we want to know what frequency , power and what is your intent !
You seem to be very vague on this which is worrying .

You have chosen RF , which is just about the hardest part of electronics .
Even the PCB becomes a big part of the circuit.
Bend the traces one way you have an inductor , bend them different they are capacitive ,

What's your level of experience , expectations and expertise ?

im fairly new to building this as actual circuit.I just had a few classes on uni abt the theory behind it.