Hi,
Every oscillator drifts. So what drift is acceptable for you?
By the way one that does not drift at all is one that is referenced by a Cesium reference, but I imagine that this is a solution not acceptable economically by you.
Hello Enzo
Search for a modded LNB on eBay with "QO-100 LNB".
Display MoreHello all,
please anybody can point me to a good LNB that do not drift.?
As i know to not get the frequency drifting the LNB needs to be modded.
So i ask if there is someone that sales good LNB already modded?
I am looking for one that has two output that i need one for NB and the other for WB.
I thanks in advance for any help.
73's de Enzo IK8OZV
Look here ...
2 output one for NB the other for WB low noise TCXO 0.25ppm....
73 de mike dg0opk
only way is an lnb with external reference (gpsdo or at least on ocxo or tcxo in shack)
Display MoreLook here ...
2 output one for NB the other for WB low noise TCXO 0.25ppm....
73 de mike dg0opk
Hello Mike,
thanks for your reply. I would like to know if you sale thew LNB already modded.
Thanks
73's de Enzo IK8OZV
Hi,
There are two practical solutions ways.
One modified LNB with internal TCXO and with external source of 25 MHz.
At external source you can apply in theory TCXO, but then there in no reason not to put it inside.
With an OCXO instead of TCXO, you have better stability. With a GPSDO you have also better accuracy.
The price for the better performance is cost.
You must define what solution is acceptable for you.
Hello Mike,
thanks for your reply. I would like to know if you sale thew LNB already modded.
Thanks
73's de Enzo IK8OZV
Hallo Enzo ...
more Info .. please mail
73
Apologize Mike,
you want my email or i have to write to you?
Danke
73's de Enzo IK8OZV
If I understand Enzo right, he wants to buy a modded LNB and not modify himself. On eBay it has such LNB's.
If I understand Enzo right, he wants to buy a modded LNB and not modify himself. On eBay it has such LNB's.
Thomas you are correct.
Please can you point me directly to it as i do not know which is the good one for our purpose or tell me how to search in eBay.
Thanks a lot.
73's de Enzo IK8OZV
Hi Enzo,
a good choice may be the Bulleseye 10 kHz BE01. That LNB has a TCXO stabilized LO-PLL.
Specs see here: https://othernet.is/products/b…h-stability-universal-lnb
It works very fine. I do not know the real frequency offset of the 25 MHz TCXO. But while testing my LNB I found that it is some 16 kHz above the 25 MHz. I use that LNB for quite a while with Simon Brown's SDR Console and frequency correction using the PSK beacon.
Without frequency correction the TCXO ist quite stable.
I have made some LO frequency offset correction on the RX config in SDR Console 9750.000.000 Hz -> 9749.980.600 Hz. Do not know if this is necessary with SDR Console, but because I do not know the lock range of the AFC I did it.
There is a second LNB connector where the TCXO signal is available for measuerements (red marked connector) and (programmable) corrections.
You may have a look on that Enzo.
73 Peter
Display MoreHi Enzo,
a good choice may be the Bulleseye 10 kHz BE01. That LNB has a TCXO stabilized LO-PLL.
Specs see here: https://othernet.is/products/b…h-stability-universal-lnb
It works very fine. I do not know the real frequency offset of the 25 MHz TCXO. But while testing my LNB I found that it is some 16 kHz above the 25 MHz. I use that LNB for quite a while with Simon Brown's SDR Console and frequency correction using the PSK beacon.
Without frequency correction the TCXO ist quite stable.
I have made some LO frequency offset correction on the RX config in SDR Console 9750.000.000 Hz -> 9749.980.600 Hz. Do not know if this is necessary with SDR Console, but because I do not know the lock range of the AFC I did it.
There is a second LNB connector where the TCXO signal is available for measuerements (red marked connector) and (programmable) corrections.
You may have a look on that Enzo.
73 Peter
Hi Peter,
thanks for your suggestion.
I already use the BullsEye LNB but it has to be ON for at least an half hour before it becomes a bit stable thanks also with the Geostationary Satellite Beacon on the SDR Console Program and also it has just one exit. while i need two exits as i want to use also the minitiouner connected .
Thanks
73's de Enzo IK8OZV
