Tuning frequencies to the decimal point

[comfortably_numb]

Good afternoon all,

As of today I've been successful in getting my Octagon to tune symbol rates as low as 148 (see screenshot below). Is it possible to dial in to more specific frequencies, such as 12027.905?

Is the hardware capable of such specific tuning, or is it a software limitation?

Currently running TNAP 6,1

 

[el bandido]

Properly setting an enigma2 receiver to read decimals of frequencies such as: 12027.905 Is not an easy task, but it is doable.
The enigma2 fta receiver is designed for the reception of satellite television which has no use for decimals in the frequency.
Plus most lnbs drift more than that. Consider At 200 ksym/s with standard QPSK rolloff (~0.35), your occupied bandwidth is roughly 270 kHz total. So what is the make/model of your lnbs?

 

[comfortably_numb]

Bullseye TCXO:

Othernet Bullseye TCXO LNB 25Mhz for Oscar 100

LNB PLL & DRO available in Europe, price and purchase at Passion Radio, shipped within 24h to 48h on material in stock, Othernet Bullseye LNB TCXO ultra stable for Oscar 100 & KU band satellite from QO100-LNB-BULLSEYE-978

www.passion-radio.com

 

[el bandido]

Download and install TNAP 7, 0406 image. It has what you need.

 

[comfortably_numb]

Thank you! Image installed in an open slot and testing now.

 

[comfortably_numb]

Using the Beta I was able to lock WPR on 99W KU down to the decimal point. Near instant lock.

I will keep experimenting!

 

[comfortably_numb]

101 KU
11716.750 V 296
KOCP/KQIE

This one is using an Amiko Universal LNB.

 

[comfortably_numb]

KNPR, 99W KU, 12028 V 185. This is on a 90cm GeoSat Pro using the Amiko universal LNB. Wasn't able to get it on my 1.2m dish with the Bullseye TCXO.

 

[el bandido]

I must say you now have an excellent dx system! Also the yellow button for the service list seems to be active and working on these low symbol rate transponders. Another success!

 

[comfortably_numb]

I must say you now have an excellent dx system! Also the yellow button for the service list seems to be active and working on these low symbol rate transponders. Another success!

Thank you for integrating this functionality into the beta TNAP!

 

[comfortably_numb]

Just FYI, for those who want to listen to KNPR, the audio only seems to work when streaming from the Octagon to PC:

 

[el bandido]

There is a problem with the sound on that version of SF8008 (Si2166D). The Avalink version of the SF8008 will play that channel.

 

[comfortably_numb]

Will it be possible to keep this new functionality in the final release of TNAP 7?

 

[el bandido]

Yes. The three decimal places in the MHz frequency is not a problem. TNAP 7 is about finished. Bootlogos and a few other things are needed to complete it.