Dongles.....

[Archive-8]

What is the main reason for using a txco dongle?


And what is the main gain, compared to a regular dongle?

Many thanks.

 

[Vipersan]

TCXO stands fot Temperature Controled Crystal (XTAL) Oscillator ..
Unlike conventional Crystals which can drift a few 10s if not 100s of cycles ..
TCXOs use a constant temperature crystal oven ..
ie ..maintained at a more constant frequency ...some as low as 1 cycle drift over many 1000s of hours of use ..
Since the dongle uses a fequency multiplication this error can show up as substantial frequency drift ..which is minimised by replacing the XTAL with a TCXO..
hope this simplified explanation helps..

 

[Archive-8]

TCXO stands fot Temperature Controled Crystal (XTAL) Oscillator ..
Unlike conventional Crystals which can drift a few 10s if not 100s of cycles ..
TCXOs use a constant temperature crystal oven ..
ie ..maintained at a more constant frequency ...some as low as 1 cycle drift over many 1000s of hours of use ..
Since the dongle uses a fequency multiplication this error can show up as substantial frequency drift ..which is minimised by replacing the XTAL with a TCXO..
hope this simplified explanation helps..

Yes thanks, that explains that.

Looks like I need to keep an eye out for one of them.

 

[Vipersan]

Yes thanks, that explains that.

Looks like I need to keep an eye out for one of them.

your wish is my command ..
both myself and Llew have bought from here ...and when in stock are the cheapest ...though the postage can be a bit slow..
Buy RTL-SDR Dongles (RTL2832U) - rtl-sdr.com

 

[Archive-8]

I will have to order one, thanks

 

[Analoguesat]

This one was flagged up on the 360Radar fb group a few days ago

https://www.amazon.co.uk/gp/product/B01HA642SW

 

[Archive-8]

This one was flagged up on the 360Radar fb group a few days ago

https://www.amazon.co.uk/gp/product/B01HA642SW

Just ordered myself one of these, noo elec dongles :-)

It's in stock so called and from the uk.

So hopefully it won't take to long to turn up

 

[Channel Hopper]

The same design -usually sold as a dvb-t stick - appears to be in the sub £10 offerings on amazon.

Any claim on stability/sensitivity is to be taken with a large piece of suspicion, no matter where they come from.

 

[Archive-8]

I have a "cheap" one at the moment. But I have ordered one of these



And it's the newer R820T2 chipset.

Supposed to be more the über dongle, or the rtl-sdr dongle @Vipersan and @Llew have.

 

[Archive4]

Mines better than yours.........................;)

 

[Archive-8]

Mines better than yours.........................;)

What model do you use? And has it got the tcxo?

 

[Archive4]

What model do you use? And has it got the tcxo?

Sorry Chris, you took my post the wrong way. I was relating to your last sentence " Supposed to be more the über dongle, or the rtl-sdr dongle @Vipersan and @Llew have. "
However, if I had one, it would be.....
Hydromatic.....
eg

 

[Archive-8]

Sorry Chris, you took my post the wrong way

 

[Analoguesat]

Chris you dont have to take Milamber too seriously ;)


Im tempted to change his user tag to Forum Jester

 

[Archive4]

Chris you dont have to take Milamber too seriously ;)


Im tempted to change his user tag to Forum Jester

And if Carlsberg made administrators..............

 

[Archive-8]

And if Carlsberg made administrators..............

They would be the best administratiors

 

[Archive-8]

Chris you dont have to take Milamber too seriously

Don't worry I dont take him to seriously at all, anymore

 

[Archive4]

Im tempted to change his user tag to Forum Jester

OK, job done!

 

[Archive-8]

OK, job done!

It's a bit of "dark" image

 

[Analoguesat]

And if Carlsberg made administrators..............

Ive had a couple of cans of Stella - does that count ?